2012-06-15 13:31:39 +07:00
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%pure-parser
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2012-06-15 13:31:38 +07:00
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%parse-param {void *_data}
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2012-06-15 13:31:39 +07:00
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%parse-param {void *scanner}
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%lex-param {void* scanner}
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2015-04-23 02:10:17 +07:00
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%locations
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2012-03-16 02:09:15 +07:00
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%{
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#define YYDEBUG 1
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#include <linux/compiler.h>
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#include <linux/list.h>
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2014-04-26 02:31:02 +07:00
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#include <linux/types.h>
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2012-03-16 02:09:15 +07:00
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#include "util.h"
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#include "parse-events.h"
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2012-06-15 13:31:39 +07:00
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#include "parse-events-bison.h"
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2012-03-16 02:09:15 +07:00
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#define ABORT_ON(val) \
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do { \
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if (val) \
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YYABORT; \
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} while (0)
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2013-07-03 02:27:25 +07:00
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#define ALLOC_LIST(list) \
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do { \
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list = malloc(sizeof(*list)); \
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ABORT_ON(!list); \
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INIT_LIST_HEAD(list); \
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} while (0)
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2013-01-22 16:09:29 +07:00
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static inc_group_count(struct list_head *list,
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struct parse_events_evlist *data)
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{
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/* Count groups only have more than 1 members */
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if (!list_is_last(list->next, list))
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data->nr_groups++;
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}
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2012-03-16 02:09:15 +07:00
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%}
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2012-06-15 13:31:40 +07:00
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%token PE_START_EVENTS PE_START_TERMS
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2012-07-04 05:00:43 +07:00
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%token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
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2012-08-17 02:10:21 +07:00
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%token PE_EVENT_NAME
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2012-03-16 02:09:15 +07:00
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%token PE_NAME
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2015-10-14 19:41:20 +07:00
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%token PE_BPF_OBJECT PE_BPF_SOURCE
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2012-03-16 02:09:15 +07:00
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%token PE_MODIFIER_EVENT PE_MODIFIER_BP
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%token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
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2012-08-08 17:14:14 +07:00
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%token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP
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2012-03-16 02:09:15 +07:00
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%token PE_ERROR
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2014-10-07 22:08:51 +07:00
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%token PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
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perf tools: Enable indices setting syntax for BPF map
This patch introduces a new syntax to perf event parser:
# perf record -e './test_bpf_map_3.c/map:channel.value[0,1,2,3...5]=101/' usleep 2
By utilizing the basic facilities in bpf-loader.c which allow setting
different slots in a BPF map separately, the newly introduced syntax
allows perf to control specific elements in a BPF map.
Test result:
# cat ./test_bpf_map_3.c
/************************ BEGIN **************************/
#include <uapi/linux/bpf.h>
#define SEC(NAME) __attribute__((section(NAME), used))
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
};
static void *(*map_lookup_elem)(struct bpf_map_def *, void *) =
(void *)BPF_FUNC_map_lookup_elem;
static int (*trace_printk)(const char *fmt, int fmt_size, ...) =
(void *)BPF_FUNC_trace_printk;
struct bpf_map_def SEC("maps") channel = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(unsigned char),
.max_entries = 100,
};
SEC("func=hrtimer_nanosleep rqtp->tv_nsec")
int func(void *ctx, int err, long nsec)
{
char fmt[] = "%ld\n";
long usec = nsec * 0x10624dd3 >> 38; // nsec / 1000
int key = (int)usec;
unsigned char *pval = map_lookup_elem(&channel, &key);
if (!pval)
return 0;
trace_printk(fmt, sizeof(fmt), (unsigned char)*pval);
return 0;
}
char _license[] SEC("license") = "GPL";
int _version SEC("version") = LINUX_VERSION_CODE;
/************************* END ***************************/
Normal case:
# echo "" > /sys/kernel/debug/tracing/trace
# ./perf record -e './test_bpf_map_3.c/map:channel.value[0,1,2,3...5]=101/' usleep 2
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
# cat /sys/kernel/debug/tracing/trace | grep usleep
usleep-405 [004] d... 2745423.547822: : 101
# ./perf record -e './test_bpf_map_3.c/map:channel.value[0...9,20...29]=102,map:channel.value[10...19]=103/' usleep 3
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
# ./perf record -e './test_bpf_map_3.c/map:channel.value[0...9,20...29]=102,map:channel.value[10...19]=103/' usleep 15
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
# cat /sys/kernel/debug/tracing/trace | grep usleep
usleep-405 [004] d... 2745423.547822: : 101
usleep-655 [006] d... 2745434.122814: : 102
usleep-904 [006] d... 2745439.916264: : 103
# ./perf record -e './test_bpf_map_3.c/map:channel.value[all]=104/' usleep 99
# cat /sys/kernel/debug/tracing/trace | grep usleep
usleep-405 [004] d... 2745423.547822: : 101
usleep-655 [006] d... 2745434.122814: : 102
usleep-904 [006] d... 2745439.916264: : 103
usleep-1537 [003] d... 2745538.053737: : 104
Error case:
# ./perf record -e './test_bpf_map_3.c/map:channel.value[10...1000]=104/' usleep 99
event syntax error: '..annel.value[10...1000]=104/'
\___ Index too large
Hint: Valid config terms:
map:[<arraymap>].value<indices>=[value]
map:[<eventmap>].event<indices>=[event]
where <indices> is something like [0,3...5] or [all]
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456132275-98875-9-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-22 16:10:35 +07:00
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%token PE_ARRAY_ALL PE_ARRAY_RANGE
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2012-03-16 02:09:15 +07:00
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%type <num> PE_VALUE
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2012-07-04 05:00:43 +07:00
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%type <num> PE_VALUE_SYM_HW
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%type <num> PE_VALUE_SYM_SW
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2012-03-16 02:09:15 +07:00
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%type <num> PE_RAW
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2012-03-16 02:09:16 +07:00
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%type <num> PE_TERM
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2012-03-16 02:09:15 +07:00
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%type <str> PE_NAME
|
perf tools: Enable passing bpf object file to --event
By introducing new rules in tools/perf/util/parse-events.[ly], this
patch enables 'perf record --event bpf_file.o' to select events by an
eBPF object file. It calls parse_events_load_bpf() to load that file,
which uses bpf__prepare_load() and finally calls bpf_object__open() for
the object files.
After applying this patch, commands like:
# perf record --event foo.o sleep
become possible.
However, at this point it is unable to link any useful things onto the
evsel list because the creating of probe points and BPF program
attaching have not been implemented. Before real events are possible to
be extracted, to avoid perf report error because of empty evsel list,
this patch link a dummy evsel. The dummy event related code will be
removed when probing and extracting code is ready.
Commiter notes:
Using it:
$ ls -la foo.o
ls: cannot access foo.o: No such file or directory
$ perf record --event foo.o sleep
libbpf: failed to open foo.o: No such file or directory
event syntax error: 'foo.o'
\___ BPF object file 'foo.o' is invalid
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
$
$ file /tmp/build/perf/perf.o
/tmp/build/perf/perf.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
$ perf record --event /tmp/build/perf/perf.o sleep
libbpf: /tmp/build/perf/perf.o is not an eBPF object file
event syntax error: '/tmp/build/perf/perf.o'
\___ BPF object file '/tmp/build/perf/perf.o' is invalid
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
$
$ file /tmp/foo.o
/tmp/foo.o: ELF 64-bit LSB relocatable, no machine, version 1 (SYSV), not stripped
$ perf record --event /tmp/foo.o sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.013 MB perf.data ]
$ perf evlist
/tmp/foo.o
$ perf evlist -v
/tmp/foo.o: type: 1, size: 112, config: 0x9, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
$
So, type 1 is PERF_TYPE_SOFTWARE, config 0x9 is PERF_COUNT_SW_DUMMY, ok.
$ perf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1444826502-49291-4-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-14 19:41:14 +07:00
|
|
|
%type <str> PE_BPF_OBJECT
|
2015-10-14 19:41:20 +07:00
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%type <str> PE_BPF_SOURCE
|
2012-03-16 02:09:15 +07:00
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|
%type <str> PE_NAME_CACHE_TYPE
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%type <str> PE_NAME_CACHE_OP_RESULT
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%type <str> PE_MODIFIER_EVENT
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%type <str> PE_MODIFIER_BP
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2012-08-17 02:10:21 +07:00
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%type <str> PE_EVENT_NAME
|
2014-10-07 22:08:51 +07:00
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|
%type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
|
2012-07-04 05:00:43 +07:00
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|
%type <num> value_sym
|
2012-03-16 02:09:16 +07:00
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|
%type <head> event_config
|
2016-02-20 04:45:12 +07:00
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%type <head> opt_event_config
|
2012-03-16 02:09:16 +07:00
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%type <term> event_term
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2012-05-21 14:12:51 +07:00
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%type <head> event_pmu
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%type <head> event_legacy_symbol
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%type <head> event_legacy_cache
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%type <head> event_legacy_mem
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%type <head> event_legacy_tracepoint
|
2015-09-28 10:52:15 +07:00
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|
%type <tracepoint_name> tracepoint_name
|
2012-05-21 14:12:51 +07:00
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%type <head> event_legacy_numeric
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%type <head> event_legacy_raw
|
perf tools: Enable passing bpf object file to --event
By introducing new rules in tools/perf/util/parse-events.[ly], this
patch enables 'perf record --event bpf_file.o' to select events by an
eBPF object file. It calls parse_events_load_bpf() to load that file,
which uses bpf__prepare_load() and finally calls bpf_object__open() for
the object files.
After applying this patch, commands like:
# perf record --event foo.o sleep
become possible.
However, at this point it is unable to link any useful things onto the
evsel list because the creating of probe points and BPF program
attaching have not been implemented. Before real events are possible to
be extracted, to avoid perf report error because of empty evsel list,
this patch link a dummy evsel. The dummy event related code will be
removed when probing and extracting code is ready.
Commiter notes:
Using it:
$ ls -la foo.o
ls: cannot access foo.o: No such file or directory
$ perf record --event foo.o sleep
libbpf: failed to open foo.o: No such file or directory
event syntax error: 'foo.o'
\___ BPF object file 'foo.o' is invalid
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
$
$ file /tmp/build/perf/perf.o
/tmp/build/perf/perf.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
$ perf record --event /tmp/build/perf/perf.o sleep
libbpf: /tmp/build/perf/perf.o is not an eBPF object file
event syntax error: '/tmp/build/perf/perf.o'
\___ BPF object file '/tmp/build/perf/perf.o' is invalid
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
$
$ file /tmp/foo.o
/tmp/foo.o: ELF 64-bit LSB relocatable, no machine, version 1 (SYSV), not stripped
$ perf record --event /tmp/foo.o sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.013 MB perf.data ]
$ perf evlist
/tmp/foo.o
$ perf evlist -v
/tmp/foo.o: type: 1, size: 112, config: 0x9, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
$
So, type 1 is PERF_TYPE_SOFTWARE, config 0x9 is PERF_COUNT_SW_DUMMY, ok.
$ perf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1444826502-49291-4-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-14 19:41:14 +07:00
|
|
|
%type <head> event_bpf_file
|
2012-05-21 14:12:51 +07:00
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%type <head> event_def
|
2012-08-17 02:10:21 +07:00
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%type <head> event_mod
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%type <head> event_name
|
2012-08-08 17:14:14 +07:00
|
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%type <head> event
|
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|
%type <head> events
|
|
|
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|
%type <head> group_def
|
|
|
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|
%type <head> group
|
|
|
|
|
%type <head> groups
|
perf tools: Enable indices setting syntax for BPF map
This patch introduces a new syntax to perf event parser:
# perf record -e './test_bpf_map_3.c/map:channel.value[0,1,2,3...5]=101/' usleep 2
By utilizing the basic facilities in bpf-loader.c which allow setting
different slots in a BPF map separately, the newly introduced syntax
allows perf to control specific elements in a BPF map.
Test result:
# cat ./test_bpf_map_3.c
/************************ BEGIN **************************/
#include <uapi/linux/bpf.h>
#define SEC(NAME) __attribute__((section(NAME), used))
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
};
static void *(*map_lookup_elem)(struct bpf_map_def *, void *) =
(void *)BPF_FUNC_map_lookup_elem;
static int (*trace_printk)(const char *fmt, int fmt_size, ...) =
(void *)BPF_FUNC_trace_printk;
struct bpf_map_def SEC("maps") channel = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(unsigned char),
.max_entries = 100,
};
SEC("func=hrtimer_nanosleep rqtp->tv_nsec")
int func(void *ctx, int err, long nsec)
{
char fmt[] = "%ld\n";
long usec = nsec * 0x10624dd3 >> 38; // nsec / 1000
int key = (int)usec;
unsigned char *pval = map_lookup_elem(&channel, &key);
if (!pval)
return 0;
trace_printk(fmt, sizeof(fmt), (unsigned char)*pval);
return 0;
}
char _license[] SEC("license") = "GPL";
int _version SEC("version") = LINUX_VERSION_CODE;
/************************* END ***************************/
Normal case:
# echo "" > /sys/kernel/debug/tracing/trace
# ./perf record -e './test_bpf_map_3.c/map:channel.value[0,1,2,3...5]=101/' usleep 2
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
# cat /sys/kernel/debug/tracing/trace | grep usleep
usleep-405 [004] d... 2745423.547822: : 101
# ./perf record -e './test_bpf_map_3.c/map:channel.value[0...9,20...29]=102,map:channel.value[10...19]=103/' usleep 3
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
# ./perf record -e './test_bpf_map_3.c/map:channel.value[0...9,20...29]=102,map:channel.value[10...19]=103/' usleep 15
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
# cat /sys/kernel/debug/tracing/trace | grep usleep
usleep-405 [004] d... 2745423.547822: : 101
usleep-655 [006] d... 2745434.122814: : 102
usleep-904 [006] d... 2745439.916264: : 103
# ./perf record -e './test_bpf_map_3.c/map:channel.value[all]=104/' usleep 99
# cat /sys/kernel/debug/tracing/trace | grep usleep
usleep-405 [004] d... 2745423.547822: : 101
usleep-655 [006] d... 2745434.122814: : 102
usleep-904 [006] d... 2745439.916264: : 103
usleep-1537 [003] d... 2745538.053737: : 104
Error case:
# ./perf record -e './test_bpf_map_3.c/map:channel.value[10...1000]=104/' usleep 99
event syntax error: '..annel.value[10...1000]=104/'
\___ Index too large
Hint: Valid config terms:
map:[<arraymap>].value<indices>=[value]
map:[<eventmap>].event<indices>=[event]
where <indices> is something like [0,3...5] or [all]
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456132275-98875-9-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-22 16:10:35 +07:00
|
|
|
%type <array> array
|
|
|
|
|
%type <array> array_term
|
|
|
|
|
%type <array> array_terms
|
2012-03-16 02:09:15 +07:00
|
|
|
|
|
|
|
|
%union
|
|
|
|
|
{
|
|
|
|
|
char *str;
|
2012-08-08 00:43:13 +07:00
|
|
|
u64 num;
|
2012-03-16 02:09:16 +07:00
|
|
|
struct list_head *head;
|
2013-01-19 02:29:49 +07:00
|
|
|
struct parse_events_term *term;
|
2015-09-28 10:52:15 +07:00
|
|
|
struct tracepoint_name {
|
|
|
|
|
char *sys;
|
|
|
|
|
char *event;
|
|
|
|
|
} tracepoint_name;
|
perf tools: Enable indices setting syntax for BPF map
This patch introduces a new syntax to perf event parser:
# perf record -e './test_bpf_map_3.c/map:channel.value[0,1,2,3...5]=101/' usleep 2
By utilizing the basic facilities in bpf-loader.c which allow setting
different slots in a BPF map separately, the newly introduced syntax
allows perf to control specific elements in a BPF map.
Test result:
# cat ./test_bpf_map_3.c
/************************ BEGIN **************************/
#include <uapi/linux/bpf.h>
#define SEC(NAME) __attribute__((section(NAME), used))
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
};
static void *(*map_lookup_elem)(struct bpf_map_def *, void *) =
(void *)BPF_FUNC_map_lookup_elem;
static int (*trace_printk)(const char *fmt, int fmt_size, ...) =
(void *)BPF_FUNC_trace_printk;
struct bpf_map_def SEC("maps") channel = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(unsigned char),
.max_entries = 100,
};
SEC("func=hrtimer_nanosleep rqtp->tv_nsec")
int func(void *ctx, int err, long nsec)
{
char fmt[] = "%ld\n";
long usec = nsec * 0x10624dd3 >> 38; // nsec / 1000
int key = (int)usec;
unsigned char *pval = map_lookup_elem(&channel, &key);
if (!pval)
return 0;
trace_printk(fmt, sizeof(fmt), (unsigned char)*pval);
return 0;
}
char _license[] SEC("license") = "GPL";
int _version SEC("version") = LINUX_VERSION_CODE;
/************************* END ***************************/
Normal case:
# echo "" > /sys/kernel/debug/tracing/trace
# ./perf record -e './test_bpf_map_3.c/map:channel.value[0,1,2,3...5]=101/' usleep 2
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
# cat /sys/kernel/debug/tracing/trace | grep usleep
usleep-405 [004] d... 2745423.547822: : 101
# ./perf record -e './test_bpf_map_3.c/map:channel.value[0...9,20...29]=102,map:channel.value[10...19]=103/' usleep 3
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
# ./perf record -e './test_bpf_map_3.c/map:channel.value[0...9,20...29]=102,map:channel.value[10...19]=103/' usleep 15
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
# cat /sys/kernel/debug/tracing/trace | grep usleep
usleep-405 [004] d... 2745423.547822: : 101
usleep-655 [006] d... 2745434.122814: : 102
usleep-904 [006] d... 2745439.916264: : 103
# ./perf record -e './test_bpf_map_3.c/map:channel.value[all]=104/' usleep 99
# cat /sys/kernel/debug/tracing/trace | grep usleep
usleep-405 [004] d... 2745423.547822: : 101
usleep-655 [006] d... 2745434.122814: : 102
usleep-904 [006] d... 2745439.916264: : 103
usleep-1537 [003] d... 2745538.053737: : 104
Error case:
# ./perf record -e './test_bpf_map_3.c/map:channel.value[10...1000]=104/' usleep 99
event syntax error: '..annel.value[10...1000]=104/'
\___ Index too large
Hint: Valid config terms:
map:[<arraymap>].value<indices>=[value]
map:[<eventmap>].event<indices>=[event]
where <indices> is something like [0,3...5] or [all]
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456132275-98875-9-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-22 16:10:35 +07:00
|
|
|
struct parse_events_array array;
|
2012-03-16 02:09:15 +07:00
|
|
|
}
|
|
|
|
|
%%
|
|
|
|
|
|
2012-06-15 13:31:40 +07:00
|
|
|
start:
|
2012-08-08 17:14:14 +07:00
|
|
|
PE_START_EVENTS start_events
|
2012-06-15 13:31:40 +07:00
|
|
|
|
|
2012-08-08 17:14:14 +07:00
|
|
|
PE_START_TERMS start_terms
|
|
|
|
|
|
|
|
|
|
start_events: groups
|
|
|
|
|
{
|
2013-01-19 02:56:57 +07:00
|
|
|
struct parse_events_evlist *data = _data;
|
2012-08-08 17:14:14 +07:00
|
|
|
|
|
|
|
|
parse_events_update_lists($1, &data->list);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
groups:
|
|
|
|
|
groups ',' group
|
|
|
|
|
{
|
|
|
|
|
struct list_head *list = $1;
|
|
|
|
|
struct list_head *group = $3;
|
|
|
|
|
|
|
|
|
|
parse_events_update_lists(group, list);
|
|
|
|
|
$$ = list;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
groups ',' event
|
|
|
|
|
{
|
|
|
|
|
struct list_head *list = $1;
|
|
|
|
|
struct list_head *event = $3;
|
|
|
|
|
|
|
|
|
|
parse_events_update_lists(event, list);
|
|
|
|
|
$$ = list;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
group
|
|
|
|
|
|
|
|
|
|
|
event
|
|
|
|
|
|
|
|
|
|
group:
|
|
|
|
|
group_def ':' PE_MODIFIER_EVENT
|
|
|
|
|
{
|
|
|
|
|
struct list_head *list = $1;
|
|
|
|
|
|
|
|
|
|
ABORT_ON(parse_events__modifier_group(list, $3));
|
|
|
|
|
$$ = list;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
group_def
|
|
|
|
|
|
|
|
|
|
group_def:
|
|
|
|
|
PE_NAME '{' events '}'
|
|
|
|
|
{
|
|
|
|
|
struct list_head *list = $3;
|
|
|
|
|
|
2013-01-22 16:09:29 +07:00
|
|
|
inc_group_count(list, _data);
|
2012-08-15 02:35:48 +07:00
|
|
|
parse_events__set_leader($1, list);
|
2012-08-08 17:14:14 +07:00
|
|
|
$$ = list;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
'{' events '}'
|
|
|
|
|
{
|
|
|
|
|
struct list_head *list = $2;
|
|
|
|
|
|
2013-01-22 16:09:29 +07:00
|
|
|
inc_group_count(list, _data);
|
2012-08-15 02:35:48 +07:00
|
|
|
parse_events__set_leader(NULL, list);
|
2012-08-08 17:14:14 +07:00
|
|
|
$$ = list;
|
|
|
|
|
}
|
2012-06-15 13:31:40 +07:00
|
|
|
|
2012-03-16 02:09:15 +07:00
|
|
|
events:
|
2012-08-08 17:14:14 +07:00
|
|
|
events ',' event
|
|
|
|
|
{
|
|
|
|
|
struct list_head *event = $3;
|
|
|
|
|
struct list_head *list = $1;
|
|
|
|
|
|
|
|
|
|
parse_events_update_lists(event, list);
|
|
|
|
|
$$ = list;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
event
|
2012-03-16 02:09:15 +07:00
|
|
|
|
2012-08-17 02:10:21 +07:00
|
|
|
event: event_mod
|
|
|
|
|
|
|
|
|
|
event_mod:
|
|
|
|
|
event_name PE_MODIFIER_EVENT
|
2012-03-16 02:09:15 +07:00
|
|
|
{
|
2012-08-08 17:14:14 +07:00
|
|
|
struct list_head *list = $1;
|
2012-06-15 13:31:38 +07:00
|
|
|
|
2012-03-21 01:15:40 +07:00
|
|
|
/*
|
|
|
|
|
* Apply modifier on all events added by single event definition
|
|
|
|
|
* (there could be more events added for multiple tracepoint
|
|
|
|
|
* definitions via '*?'.
|
|
|
|
|
*/
|
2012-08-08 17:21:54 +07:00
|
|
|
ABORT_ON(parse_events__modifier_event(list, $2, false));
|
2012-08-08 17:14:14 +07:00
|
|
|
$$ = list;
|
2012-03-16 02:09:15 +07:00
|
|
|
}
|
|
|
|
|
|
|
2012-08-17 02:10:21 +07:00
|
|
|
event_name
|
|
|
|
|
|
|
|
|
|
event_name:
|
|
|
|
|
PE_EVENT_NAME event_def
|
|
|
|
|
{
|
|
|
|
|
ABORT_ON(parse_events_name($2, $1));
|
|
|
|
|
free($1);
|
|
|
|
|
$$ = $2;
|
|
|
|
|
}
|
|
|
|
|
|
|
2012-03-16 02:09:15 +07:00
|
|
|
event_def
|
|
|
|
|
|
2012-03-16 02:09:18 +07:00
|
|
|
event_def: event_pmu |
|
|
|
|
|
event_legacy_symbol |
|
2012-03-16 02:09:15 +07:00
|
|
|
event_legacy_cache sep_dc |
|
|
|
|
|
event_legacy_mem |
|
|
|
|
|
event_legacy_tracepoint sep_dc |
|
|
|
|
|
event_legacy_numeric sep_dc |
|
perf tools: Enable passing bpf object file to --event
By introducing new rules in tools/perf/util/parse-events.[ly], this
patch enables 'perf record --event bpf_file.o' to select events by an
eBPF object file. It calls parse_events_load_bpf() to load that file,
which uses bpf__prepare_load() and finally calls bpf_object__open() for
the object files.
After applying this patch, commands like:
# perf record --event foo.o sleep
become possible.
However, at this point it is unable to link any useful things onto the
evsel list because the creating of probe points and BPF program
attaching have not been implemented. Before real events are possible to
be extracted, to avoid perf report error because of empty evsel list,
this patch link a dummy evsel. The dummy event related code will be
removed when probing and extracting code is ready.
Commiter notes:
Using it:
$ ls -la foo.o
ls: cannot access foo.o: No such file or directory
$ perf record --event foo.o sleep
libbpf: failed to open foo.o: No such file or directory
event syntax error: 'foo.o'
\___ BPF object file 'foo.o' is invalid
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
$
$ file /tmp/build/perf/perf.o
/tmp/build/perf/perf.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
$ perf record --event /tmp/build/perf/perf.o sleep
libbpf: /tmp/build/perf/perf.o is not an eBPF object file
event syntax error: '/tmp/build/perf/perf.o'
\___ BPF object file '/tmp/build/perf/perf.o' is invalid
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
$
$ file /tmp/foo.o
/tmp/foo.o: ELF 64-bit LSB relocatable, no machine, version 1 (SYSV), not stripped
$ perf record --event /tmp/foo.o sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.013 MB perf.data ]
$ perf evlist
/tmp/foo.o
$ perf evlist -v
/tmp/foo.o: type: 1, size: 112, config: 0x9, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
$
So, type 1 is PERF_TYPE_SOFTWARE, config 0x9 is PERF_COUNT_SW_DUMMY, ok.
$ perf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1444826502-49291-4-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-14 19:41:14 +07:00
|
|
|
event_legacy_raw sep_dc |
|
|
|
|
|
event_bpf_file
|
2012-03-16 02:09:15 +07:00
|
|
|
|
2012-03-16 02:09:18 +07:00
|
|
|
event_pmu:
|
|
|
|
|
PE_NAME '/' event_config '/'
|
|
|
|
|
{
|
2013-01-19 02:56:57 +07:00
|
|
|
struct parse_events_evlist *data = _data;
|
2013-07-03 02:27:25 +07:00
|
|
|
struct list_head *list;
|
2012-05-21 14:12:51 +07:00
|
|
|
|
2013-07-03 02:27:25 +07:00
|
|
|
ALLOC_LIST(list);
|
2015-04-23 02:10:19 +07:00
|
|
|
ABORT_ON(parse_events_add_pmu(data, list, $1, $3));
|
2016-02-13 03:09:17 +07:00
|
|
|
parse_events_terms__delete($3);
|
2012-05-21 14:12:51 +07:00
|
|
|
$$ = list;
|
2012-03-16 02:09:18 +07:00
|
|
|
}
|
2014-08-16 02:08:40 +07:00
|
|
|
|
|
2014-10-07 22:08:51 +07:00
|
|
|
PE_KERNEL_PMU_EVENT sep_dc
|
|
|
|
|
{
|
|
|
|
|
struct parse_events_evlist *data = _data;
|
|
|
|
|
struct list_head *head;
|
|
|
|
|
struct parse_events_term *term;
|
|
|
|
|
struct list_head *list;
|
|
|
|
|
|
|
|
|
|
ALLOC_LIST(head);
|
|
|
|
|
ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
|
2015-04-23 02:10:20 +07:00
|
|
|
$1, 1, &@1, NULL));
|
2014-10-07 22:08:51 +07:00
|
|
|
list_add_tail(&term->list, head);
|
|
|
|
|
|
|
|
|
|
ALLOC_LIST(list);
|
2015-04-23 02:10:19 +07:00
|
|
|
ABORT_ON(parse_events_add_pmu(data, list, "cpu", head));
|
2016-02-13 03:09:17 +07:00
|
|
|
parse_events_terms__delete(head);
|
2014-10-07 22:08:51 +07:00
|
|
|
$$ = list;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc
|
|
|
|
|
{
|
|
|
|
|
struct parse_events_evlist *data = _data;
|
|
|
|
|
struct list_head *head;
|
|
|
|
|
struct parse_events_term *term;
|
|
|
|
|
struct list_head *list;
|
|
|
|
|
char pmu_name[128];
|
|
|
|
|
snprintf(&pmu_name, 128, "%s-%s", $1, $3);
|
|
|
|
|
|
|
|
|
|
ALLOC_LIST(head);
|
|
|
|
|
ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
|
2015-04-23 02:10:20 +07:00
|
|
|
&pmu_name, 1, &@1, NULL));
|
2014-10-07 22:08:51 +07:00
|
|
|
list_add_tail(&term->list, head);
|
|
|
|
|
|
|
|
|
|
ALLOC_LIST(list);
|
2015-09-02 14:56:31 +07:00
|
|
|
ABORT_ON(parse_events_add_pmu(data, list, "cpu", head));
|
2016-02-13 03:09:17 +07:00
|
|
|
parse_events_terms__delete(head);
|
2014-10-07 22:08:51 +07:00
|
|
|
$$ = list;
|
|
|
|
|
}
|
2012-03-16 02:09:18 +07:00
|
|
|
|
2012-07-04 05:00:43 +07:00
|
|
|
value_sym:
|
|
|
|
|
PE_VALUE_SYM_HW
|
|
|
|
|
|
|
|
|
|
|
PE_VALUE_SYM_SW
|
|
|
|
|
|
2012-03-16 02:09:15 +07:00
|
|
|
event_legacy_symbol:
|
2012-07-04 05:00:43 +07:00
|
|
|
value_sym '/' event_config '/'
|
2012-03-16 02:09:15 +07:00
|
|
|
{
|
2013-01-19 02:56:57 +07:00
|
|
|
struct parse_events_evlist *data = _data;
|
2013-07-03 02:27:25 +07:00
|
|
|
struct list_head *list;
|
2012-03-16 02:09:15 +07:00
|
|
|
int type = $1 >> 16;
|
|
|
|
|
int config = $1 & 255;
|
|
|
|
|
|
2013-07-03 02:27:25 +07:00
|
|
|
ALLOC_LIST(list);
|
2015-04-23 02:10:24 +07:00
|
|
|
ABORT_ON(parse_events_add_numeric(data, list, type, config, $3));
|
2016-02-13 03:09:17 +07:00
|
|
|
parse_events_terms__delete($3);
|
2012-05-21 14:12:51 +07:00
|
|
|
$$ = list;
|
2012-03-16 02:09:16 +07:00
|
|
|
}
|
|
|
|
|
|
|
2012-07-04 05:00:43 +07:00
|
|
|
value_sym sep_slash_dc
|
2012-03-16 02:09:16 +07:00
|
|
|
{
|
2013-01-19 02:56:57 +07:00
|
|
|
struct parse_events_evlist *data = _data;
|
2013-07-03 02:27:25 +07:00
|
|
|
struct list_head *list;
|
2012-03-16 02:09:16 +07:00
|
|
|
int type = $1 >> 16;
|
|
|
|
|
int config = $1 & 255;
|
|
|
|
|
|
2013-07-03 02:27:25 +07:00
|
|
|
ALLOC_LIST(list);
|
2015-04-23 02:10:24 +07:00
|
|
|
ABORT_ON(parse_events_add_numeric(data, list, type, config, NULL));
|
2012-05-21 14:12:51 +07:00
|
|
|
$$ = list;
|
2012-03-16 02:09:15 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
event_legacy_cache:
|
2016-02-19 18:44:01 +07:00
|
|
|
PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT opt_event_config
|
2012-03-16 02:09:15 +07:00
|
|
|
{
|
2013-01-19 02:56:57 +07:00
|
|
|
struct parse_events_evlist *data = _data;
|
2016-02-19 18:44:01 +07:00
|
|
|
struct parse_events_error *error = data->error;
|
2013-07-03 02:27:25 +07:00
|
|
|
struct list_head *list;
|
2012-05-21 14:12:51 +07:00
|
|
|
|
2013-07-03 02:27:25 +07:00
|
|
|
ALLOC_LIST(list);
|
2016-02-19 18:44:01 +07:00
|
|
|
ABORT_ON(parse_events_add_cache(list, &data->idx, $1, $3, $5, error, $6));
|
|
|
|
|
parse_events_terms__delete($6);
|
2012-05-21 14:12:51 +07:00
|
|
|
$$ = list;
|
2012-03-16 02:09:15 +07:00
|
|
|
}
|
|
|
|
|
|
|
2016-02-19 18:44:01 +07:00
|
|
|
PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT opt_event_config
|
2012-03-16 02:09:15 +07:00
|
|
|
{
|
2013-01-19 02:56:57 +07:00
|
|
|
struct parse_events_evlist *data = _data;
|
2016-02-19 18:44:01 +07:00
|
|
|
struct parse_events_error *error = data->error;
|
2013-07-03 02:27:25 +07:00
|
|
|
struct list_head *list;
|
2012-05-21 14:12:51 +07:00
|
|
|
|
2013-07-03 02:27:25 +07:00
|
|
|
ALLOC_LIST(list);
|
2016-02-19 18:44:01 +07:00
|
|
|
ABORT_ON(parse_events_add_cache(list, &data->idx, $1, $3, NULL, error, $4));
|
|
|
|
|
parse_events_terms__delete($4);
|
2012-05-21 14:12:51 +07:00
|
|
|
$$ = list;
|
2012-03-16 02:09:15 +07:00
|
|
|
}
|
|
|
|
|
|
|
2016-02-19 18:44:01 +07:00
|
|
|
PE_NAME_CACHE_TYPE opt_event_config
|
2012-03-16 02:09:15 +07:00
|
|
|
{
|
2013-01-19 02:56:57 +07:00
|
|
|
struct parse_events_evlist *data = _data;
|
2016-02-19 18:44:01 +07:00
|
|
|
struct parse_events_error *error = data->error;
|
2013-07-03 02:27:25 +07:00
|
|
|
struct list_head *list;
|
2012-05-21 14:12:51 +07:00
|
|
|
|
2013-07-03 02:27:25 +07:00
|
|
|
ALLOC_LIST(list);
|
2016-02-19 18:44:01 +07:00
|
|
|
ABORT_ON(parse_events_add_cache(list, &data->idx, $1, NULL, NULL, error, $2));
|
|
|
|
|
parse_events_terms__delete($2);
|
2012-05-21 14:12:51 +07:00
|
|
|
$$ = list;
|
2012-03-16 02:09:15 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
event_legacy_mem:
|
2014-05-29 22:26:51 +07:00
|
|
|
PE_PREFIX_MEM PE_VALUE '/' PE_VALUE ':' PE_MODIFIER_BP sep_dc
|
|
|
|
|
{
|
|
|
|
|
struct parse_events_evlist *data = _data;
|
|
|
|
|
struct list_head *list;
|
|
|
|
|
|
|
|
|
|
ALLOC_LIST(list);
|
|
|
|
|
ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
|
|
|
|
|
(void *) $2, $6, $4));
|
|
|
|
|
$$ = list;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc
|
|
|
|
|
{
|
|
|
|
|
struct parse_events_evlist *data = _data;
|
|
|
|
|
struct list_head *list;
|
|
|
|
|
|
|
|
|
|
ALLOC_LIST(list);
|
|
|
|
|
ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
|
|
|
|
|
(void *) $2, NULL, $4));
|
|
|
|
|
$$ = list;
|
|
|
|
|
}
|
|
|
|
|
|
|
2012-03-16 02:09:15 +07:00
|
|
|
PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
|
|
|
|
|
{
|
2013-01-19 02:56:57 +07:00
|
|
|
struct parse_events_evlist *data = _data;
|
2013-07-03 02:27:25 +07:00
|
|
|
struct list_head *list;
|
2012-05-21 14:12:51 +07:00
|
|
|
|
2013-07-03 02:27:25 +07:00
|
|
|
ALLOC_LIST(list);
|
|
|
|
|
ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
|
2014-05-29 22:26:51 +07:00
|
|
|
(void *) $2, $4, 0));
|
2012-05-21 14:12:51 +07:00
|
|
|
$$ = list;
|
2012-03-16 02:09:15 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
PE_PREFIX_MEM PE_VALUE sep_dc
|
|
|
|
|
{
|
2013-01-19 02:56:57 +07:00
|
|
|
struct parse_events_evlist *data = _data;
|
2013-07-03 02:27:25 +07:00
|
|
|
struct list_head *list;
|
2012-05-21 14:12:51 +07:00
|
|
|
|
2013-07-03 02:27:25 +07:00
|
|
|
ALLOC_LIST(list);
|
|
|
|
|
ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
|
2014-05-29 22:26:51 +07:00
|
|
|
(void *) $2, NULL, 0));
|
2012-05-21 14:12:51 +07:00
|
|
|
$$ = list;
|
2012-03-16 02:09:15 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
event_legacy_tracepoint:
|
2016-02-20 04:45:12 +07:00
|
|
|
tracepoint_name opt_event_config
|
2014-04-25 22:34:05 +07:00
|
|
|
{
|
|
|
|
|
struct parse_events_evlist *data = _data;
|
2015-09-07 15:38:07 +07:00
|
|
|
struct parse_events_error *error = data->error;
|
2014-04-25 22:34:05 +07:00
|
|
|
struct list_head *list;
|
|
|
|
|
|
|
|
|
|
ALLOC_LIST(list);
|
2015-09-28 10:52:16 +07:00
|
|
|
if (error)
|
|
|
|
|
error->idx = @1.first_column;
|
|
|
|
|
|
2015-09-28 10:52:15 +07:00
|
|
|
if (parse_events_add_tracepoint(list, &data->idx, $1.sys, $1.event,
|
2016-02-20 04:45:12 +07:00
|
|
|
error, $2))
|
2015-09-28 10:52:16 +07:00
|
|
|
return -1;
|
|
|
|
|
|
2014-04-25 22:34:05 +07:00
|
|
|
$$ = list;
|
|
|
|
|
}
|
2015-09-28 10:52:15 +07:00
|
|
|
|
|
|
|
|
tracepoint_name:
|
|
|
|
|
PE_NAME '-' PE_NAME ':' PE_NAME
|
|
|
|
|
{
|
|
|
|
|
char sys_name[128];
|
|
|
|
|
struct tracepoint_name tracepoint;
|
|
|
|
|
|
|
|
|
|
snprintf(&sys_name, 128, "%s-%s", $1, $3);
|
|
|
|
|
tracepoint.sys = &sys_name;
|
|
|
|
|
tracepoint.event = $5;
|
|
|
|
|
|
|
|
|
|
$$ = tracepoint;
|
|
|
|
|
}
|
2014-04-25 22:34:05 +07:00
|
|
|
|
|
2012-03-16 02:09:15 +07:00
|
|
|
PE_NAME ':' PE_NAME
|
|
|
|
|
{
|
2015-09-28 10:52:15 +07:00
|
|
|
struct tracepoint_name tracepoint = {$1, $3};
|
2012-05-21 14:12:51 +07:00
|
|
|
|
2015-09-28 10:52:15 +07:00
|
|
|
$$ = tracepoint;
|
2012-03-16 02:09:15 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
event_legacy_numeric:
|
perf tools: Enable config raw and numeric events
This patch allows setting config terms for raw and numeric events.
For example:
# perf stat -e cycles/name=cyc/ ls
...
1821108 cyc
...
# perf stat -e r6530160/name=event/ ls
...
1103195 event
...
# perf record -e cycles -e 4:0x6530160/name=evtx,call-graph=fp/ -a sleep 1
...
# perf report --stdio
...
# Samples: 124 of event 'cycles'
46.61% 0.00% swapper [kernel.vmlinux] [k] cpu_startup_entry
41.26% 0.00% swapper [kernel.vmlinux] [k] start_secondary
...
# Samples: 91 of event 'evtx'
...
93.76% 0.00% swapper [kernel.vmlinux] [k] cpu_startup_entry
|
---cpu_startup_entry
|
|--66.63%--call_cpuidle
| cpuidle_enter
| |
...
3 test cases are introduced to test config terms for symbol, raw and
numeric events.
Committer note:
Further testing shows that we can retrieve the event name using 'perf
evlist -v' and looking at the 'config' perf_event_attr field, i.e.:
# perf record -e cycles -e 4:0x6530160/name=evtx,call-graph=fp/ -a sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.724 MB perf.data (2076 samples) ]
# perf evlist
cycles
evtx
# perf evlist -v
cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CPU|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
evtx: type: 4, size: 112, config: 0x6530160, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CALLCHAIN|CPU|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, freq: 1, sample_id_all: 1, exclude_guest: 1
#
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1455882283-79592-13-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-19 18:44:00 +07:00
|
|
|
PE_VALUE ':' PE_VALUE opt_event_config
|
2012-03-16 02:09:15 +07:00
|
|
|
{
|
2013-01-19 02:56:57 +07:00
|
|
|
struct parse_events_evlist *data = _data;
|
2013-07-03 02:27:25 +07:00
|
|
|
struct list_head *list;
|
2012-05-21 14:12:51 +07:00
|
|
|
|
2013-07-03 02:27:25 +07:00
|
|
|
ALLOC_LIST(list);
|
perf tools: Enable config raw and numeric events
This patch allows setting config terms for raw and numeric events.
For example:
# perf stat -e cycles/name=cyc/ ls
...
1821108 cyc
...
# perf stat -e r6530160/name=event/ ls
...
1103195 event
...
# perf record -e cycles -e 4:0x6530160/name=evtx,call-graph=fp/ -a sleep 1
...
# perf report --stdio
...
# Samples: 124 of event 'cycles'
46.61% 0.00% swapper [kernel.vmlinux] [k] cpu_startup_entry
41.26% 0.00% swapper [kernel.vmlinux] [k] start_secondary
...
# Samples: 91 of event 'evtx'
...
93.76% 0.00% swapper [kernel.vmlinux] [k] cpu_startup_entry
|
---cpu_startup_entry
|
|--66.63%--call_cpuidle
| cpuidle_enter
| |
...
3 test cases are introduced to test config terms for symbol, raw and
numeric events.
Committer note:
Further testing shows that we can retrieve the event name using 'perf
evlist -v' and looking at the 'config' perf_event_attr field, i.e.:
# perf record -e cycles -e 4:0x6530160/name=evtx,call-graph=fp/ -a sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.724 MB perf.data (2076 samples) ]
# perf evlist
cycles
evtx
# perf evlist -v
cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CPU|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
evtx: type: 4, size: 112, config: 0x6530160, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CALLCHAIN|CPU|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, freq: 1, sample_id_all: 1, exclude_guest: 1
#
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1455882283-79592-13-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-19 18:44:00 +07:00
|
|
|
ABORT_ON(parse_events_add_numeric(data, list, (u32)$1, $3, $4));
|
|
|
|
|
parse_events_terms__delete($4);
|
2012-05-21 14:12:51 +07:00
|
|
|
$$ = list;
|
2012-03-16 02:09:15 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
event_legacy_raw:
|
perf tools: Enable config raw and numeric events
This patch allows setting config terms for raw and numeric events.
For example:
# perf stat -e cycles/name=cyc/ ls
...
1821108 cyc
...
# perf stat -e r6530160/name=event/ ls
...
1103195 event
...
# perf record -e cycles -e 4:0x6530160/name=evtx,call-graph=fp/ -a sleep 1
...
# perf report --stdio
...
# Samples: 124 of event 'cycles'
46.61% 0.00% swapper [kernel.vmlinux] [k] cpu_startup_entry
41.26% 0.00% swapper [kernel.vmlinux] [k] start_secondary
...
# Samples: 91 of event 'evtx'
...
93.76% 0.00% swapper [kernel.vmlinux] [k] cpu_startup_entry
|
---cpu_startup_entry
|
|--66.63%--call_cpuidle
| cpuidle_enter
| |
...
3 test cases are introduced to test config terms for symbol, raw and
numeric events.
Committer note:
Further testing shows that we can retrieve the event name using 'perf
evlist -v' and looking at the 'config' perf_event_attr field, i.e.:
# perf record -e cycles -e 4:0x6530160/name=evtx,call-graph=fp/ -a sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.724 MB perf.data (2076 samples) ]
# perf evlist
cycles
evtx
# perf evlist -v
cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CPU|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
evtx: type: 4, size: 112, config: 0x6530160, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CALLCHAIN|CPU|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, freq: 1, sample_id_all: 1, exclude_guest: 1
#
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1455882283-79592-13-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-19 18:44:00 +07:00
|
|
|
PE_RAW opt_event_config
|
2012-03-16 02:09:15 +07:00
|
|
|
{
|
2013-01-19 02:56:57 +07:00
|
|
|
struct parse_events_evlist *data = _data;
|
2013-07-03 02:27:25 +07:00
|
|
|
struct list_head *list;
|
2012-05-21 14:12:51 +07:00
|
|
|
|
2013-07-03 02:27:25 +07:00
|
|
|
ALLOC_LIST(list);
|
perf tools: Enable config raw and numeric events
This patch allows setting config terms for raw and numeric events.
For example:
# perf stat -e cycles/name=cyc/ ls
...
1821108 cyc
...
# perf stat -e r6530160/name=event/ ls
...
1103195 event
...
# perf record -e cycles -e 4:0x6530160/name=evtx,call-graph=fp/ -a sleep 1
...
# perf report --stdio
...
# Samples: 124 of event 'cycles'
46.61% 0.00% swapper [kernel.vmlinux] [k] cpu_startup_entry
41.26% 0.00% swapper [kernel.vmlinux] [k] start_secondary
...
# Samples: 91 of event 'evtx'
...
93.76% 0.00% swapper [kernel.vmlinux] [k] cpu_startup_entry
|
---cpu_startup_entry
|
|--66.63%--call_cpuidle
| cpuidle_enter
| |
...
3 test cases are introduced to test config terms for symbol, raw and
numeric events.
Committer note:
Further testing shows that we can retrieve the event name using 'perf
evlist -v' and looking at the 'config' perf_event_attr field, i.e.:
# perf record -e cycles -e 4:0x6530160/name=evtx,call-graph=fp/ -a sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.724 MB perf.data (2076 samples) ]
# perf evlist
cycles
evtx
# perf evlist -v
cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CPU|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
evtx: type: 4, size: 112, config: 0x6530160, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CALLCHAIN|CPU|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, freq: 1, sample_id_all: 1, exclude_guest: 1
#
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1455882283-79592-13-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-19 18:44:00 +07:00
|
|
|
ABORT_ON(parse_events_add_numeric(data, list, PERF_TYPE_RAW, $1, $2));
|
|
|
|
|
parse_events_terms__delete($2);
|
2012-05-21 14:12:51 +07:00
|
|
|
$$ = list;
|
2012-03-16 02:09:16 +07:00
|
|
|
}
|
|
|
|
|
|
perf tools: Enable passing bpf object file to --event
By introducing new rules in tools/perf/util/parse-events.[ly], this
patch enables 'perf record --event bpf_file.o' to select events by an
eBPF object file. It calls parse_events_load_bpf() to load that file,
which uses bpf__prepare_load() and finally calls bpf_object__open() for
the object files.
After applying this patch, commands like:
# perf record --event foo.o sleep
become possible.
However, at this point it is unable to link any useful things onto the
evsel list because the creating of probe points and BPF program
attaching have not been implemented. Before real events are possible to
be extracted, to avoid perf report error because of empty evsel list,
this patch link a dummy evsel. The dummy event related code will be
removed when probing and extracting code is ready.
Commiter notes:
Using it:
$ ls -la foo.o
ls: cannot access foo.o: No such file or directory
$ perf record --event foo.o sleep
libbpf: failed to open foo.o: No such file or directory
event syntax error: 'foo.o'
\___ BPF object file 'foo.o' is invalid
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
$
$ file /tmp/build/perf/perf.o
/tmp/build/perf/perf.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
$ perf record --event /tmp/build/perf/perf.o sleep
libbpf: /tmp/build/perf/perf.o is not an eBPF object file
event syntax error: '/tmp/build/perf/perf.o'
\___ BPF object file '/tmp/build/perf/perf.o' is invalid
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
$
$ file /tmp/foo.o
/tmp/foo.o: ELF 64-bit LSB relocatable, no machine, version 1 (SYSV), not stripped
$ perf record --event /tmp/foo.o sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.013 MB perf.data ]
$ perf evlist
/tmp/foo.o
$ perf evlist -v
/tmp/foo.o: type: 1, size: 112, config: 0x9, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
$
So, type 1 is PERF_TYPE_SOFTWARE, config 0x9 is PERF_COUNT_SW_DUMMY, ok.
$ perf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1444826502-49291-4-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-14 19:41:14 +07:00
|
|
|
event_bpf_file:
|
perf tools: Enable BPF object configure syntax
This patch adds the final step for BPF map configuration. A new syntax
is appended into parser so user can config BPF objects through '/' '/'
enclosed config terms.
After this patch, following syntax is available:
# perf record -e ./test_bpf_map_1.c/map:channel.value=10/ ...
It would takes effect after appling following commits.
Test result:
# cat ./test_bpf_map_1.c
/************************ BEGIN **************************/
#include <uapi/linux/bpf.h>
#define SEC(NAME) __attribute__((section(NAME), used))
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
};
static void *(*map_lookup_elem)(struct bpf_map_def *, void *) =
(void *)BPF_FUNC_map_lookup_elem;
static int (*trace_printk)(const char *fmt, int fmt_size, ...) =
(void *)BPF_FUNC_trace_printk;
struct bpf_map_def SEC("maps") channel = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(int),
.max_entries = 1,
};
SEC("func=sys_nanosleep")
int func(void *ctx)
{
int key = 0;
char fmt[] = "%d\n";
int *pval = map_lookup_elem(&channel, &key);
if (!pval)
return 0;
trace_printk(fmt, sizeof(fmt), *pval);
return 0;
}
char _license[] SEC("license") = "GPL";
int _version SEC("version") = LINUX_VERSION_CODE;
/************************* END ***************************/
- Normal case:
# ./perf record -e './test_bpf_map_1.c/map:channel.value=10/' usleep 10
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
- Error case:
# ./perf record -e './test_bpf_map_1.c/map:channel.value/' usleep 10
event syntax error: '..ps:channel:value/'
\___ Config value not set (missing '=')
Hint: Valid config term:
map:[<arraymap>]:value=[value]
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
# ./perf record -e './test_bpf_map_1.c/xmap:channel.value=10/' usleep 10
event syntax error: '..pf_map_1.c/xmap:channel.value=10/'
\___ Invalid object config option
[SNIP]
# ./perf record -e './test_bpf_map_1.c/map:xchannel.value=10/' usleep 10
event syntax error: '..p_1.c/map:xchannel.value=10/'
\___ Target map not exist
[SNIP]
# ./perf record -e './test_bpf_map_1.c/map:channel.xvalue=10/' usleep 10
event syntax error: '..ps:channel.xvalue=10/'
\___ Invalid object map config option
[SNIP]
# ./perf record -e './test_bpf_map_1.c/map:channel.value=x10/' usleep 10
event syntax error: '..nnel.value=x10/'
\___ Incorrect value type for map
[SNIP]
Change BPF_MAP_TYPE_ARRAY to '1' in test_bpf_map_1.c:
# ./perf record -e './test_bpf_map_1.c/map:channel.value=10/' usleep 10
event syntax error: '..ps:channel.value=10/'
\___ Can't use this config term to this type of map
Hint: Valid config term:
map:[<arraymap>].value=[value]
(add -v to see detail)
Signed-off-by: Wang Nan <wangnan0@huawei.com>
[for parser part]
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456132275-98875-5-git-send-email-wangnan0@huawei.com
Signed-off-by: He Kuang <hekuang@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-22 16:10:31 +07:00
|
|
|
PE_BPF_OBJECT opt_event_config
|
perf tools: Enable passing bpf object file to --event
By introducing new rules in tools/perf/util/parse-events.[ly], this
patch enables 'perf record --event bpf_file.o' to select events by an
eBPF object file. It calls parse_events_load_bpf() to load that file,
which uses bpf__prepare_load() and finally calls bpf_object__open() for
the object files.
After applying this patch, commands like:
# perf record --event foo.o sleep
become possible.
However, at this point it is unable to link any useful things onto the
evsel list because the creating of probe points and BPF program
attaching have not been implemented. Before real events are possible to
be extracted, to avoid perf report error because of empty evsel list,
this patch link a dummy evsel. The dummy event related code will be
removed when probing and extracting code is ready.
Commiter notes:
Using it:
$ ls -la foo.o
ls: cannot access foo.o: No such file or directory
$ perf record --event foo.o sleep
libbpf: failed to open foo.o: No such file or directory
event syntax error: 'foo.o'
\___ BPF object file 'foo.o' is invalid
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
$
$ file /tmp/build/perf/perf.o
/tmp/build/perf/perf.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
$ perf record --event /tmp/build/perf/perf.o sleep
libbpf: /tmp/build/perf/perf.o is not an eBPF object file
event syntax error: '/tmp/build/perf/perf.o'
\___ BPF object file '/tmp/build/perf/perf.o' is invalid
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
$
$ file /tmp/foo.o
/tmp/foo.o: ELF 64-bit LSB relocatable, no machine, version 1 (SYSV), not stripped
$ perf record --event /tmp/foo.o sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.013 MB perf.data ]
$ perf evlist
/tmp/foo.o
$ perf evlist -v
/tmp/foo.o: type: 1, size: 112, config: 0x9, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
$
So, type 1 is PERF_TYPE_SOFTWARE, config 0x9 is PERF_COUNT_SW_DUMMY, ok.
$ perf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1444826502-49291-4-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-14 19:41:14 +07:00
|
|
|
{
|
|
|
|
|
struct parse_events_evlist *data = _data;
|
|
|
|
|
struct parse_events_error *error = data->error;
|
|
|
|
|
struct list_head *list;
|
|
|
|
|
|
|
|
|
|
ALLOC_LIST(list);
|
perf tools: Enable BPF object configure syntax
This patch adds the final step for BPF map configuration. A new syntax
is appended into parser so user can config BPF objects through '/' '/'
enclosed config terms.
After this patch, following syntax is available:
# perf record -e ./test_bpf_map_1.c/map:channel.value=10/ ...
It would takes effect after appling following commits.
Test result:
# cat ./test_bpf_map_1.c
/************************ BEGIN **************************/
#include <uapi/linux/bpf.h>
#define SEC(NAME) __attribute__((section(NAME), used))
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
};
static void *(*map_lookup_elem)(struct bpf_map_def *, void *) =
(void *)BPF_FUNC_map_lookup_elem;
static int (*trace_printk)(const char *fmt, int fmt_size, ...) =
(void *)BPF_FUNC_trace_printk;
struct bpf_map_def SEC("maps") channel = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(int),
.max_entries = 1,
};
SEC("func=sys_nanosleep")
int func(void *ctx)
{
int key = 0;
char fmt[] = "%d\n";
int *pval = map_lookup_elem(&channel, &key);
if (!pval)
return 0;
trace_printk(fmt, sizeof(fmt), *pval);
return 0;
}
char _license[] SEC("license") = "GPL";
int _version SEC("version") = LINUX_VERSION_CODE;
/************************* END ***************************/
- Normal case:
# ./perf record -e './test_bpf_map_1.c/map:channel.value=10/' usleep 10
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
- Error case:
# ./perf record -e './test_bpf_map_1.c/map:channel.value/' usleep 10
event syntax error: '..ps:channel:value/'
\___ Config value not set (missing '=')
Hint: Valid config term:
map:[<arraymap>]:value=[value]
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
# ./perf record -e './test_bpf_map_1.c/xmap:channel.value=10/' usleep 10
event syntax error: '..pf_map_1.c/xmap:channel.value=10/'
\___ Invalid object config option
[SNIP]
# ./perf record -e './test_bpf_map_1.c/map:xchannel.value=10/' usleep 10
event syntax error: '..p_1.c/map:xchannel.value=10/'
\___ Target map not exist
[SNIP]
# ./perf record -e './test_bpf_map_1.c/map:channel.xvalue=10/' usleep 10
event syntax error: '..ps:channel.xvalue=10/'
\___ Invalid object map config option
[SNIP]
# ./perf record -e './test_bpf_map_1.c/map:channel.value=x10/' usleep 10
event syntax error: '..nnel.value=x10/'
\___ Incorrect value type for map
[SNIP]
Change BPF_MAP_TYPE_ARRAY to '1' in test_bpf_map_1.c:
# ./perf record -e './test_bpf_map_1.c/map:channel.value=10/' usleep 10
event syntax error: '..ps:channel.value=10/'
\___ Can't use this config term to this type of map
Hint: Valid config term:
map:[<arraymap>].value=[value]
(add -v to see detail)
Signed-off-by: Wang Nan <wangnan0@huawei.com>
[for parser part]
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456132275-98875-5-git-send-email-wangnan0@huawei.com
Signed-off-by: He Kuang <hekuang@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-22 16:10:31 +07:00
|
|
|
ABORT_ON(parse_events_load_bpf(data, list, $1, false, $2));
|
|
|
|
|
parse_events_terms__delete($2);
|
2015-10-14 19:41:20 +07:00
|
|
|
$$ = list;
|
|
|
|
|
}
|
|
|
|
|
|
|
perf tools: Enable BPF object configure syntax
This patch adds the final step for BPF map configuration. A new syntax
is appended into parser so user can config BPF objects through '/' '/'
enclosed config terms.
After this patch, following syntax is available:
# perf record -e ./test_bpf_map_1.c/map:channel.value=10/ ...
It would takes effect after appling following commits.
Test result:
# cat ./test_bpf_map_1.c
/************************ BEGIN **************************/
#include <uapi/linux/bpf.h>
#define SEC(NAME) __attribute__((section(NAME), used))
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
};
static void *(*map_lookup_elem)(struct bpf_map_def *, void *) =
(void *)BPF_FUNC_map_lookup_elem;
static int (*trace_printk)(const char *fmt, int fmt_size, ...) =
(void *)BPF_FUNC_trace_printk;
struct bpf_map_def SEC("maps") channel = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(int),
.max_entries = 1,
};
SEC("func=sys_nanosleep")
int func(void *ctx)
{
int key = 0;
char fmt[] = "%d\n";
int *pval = map_lookup_elem(&channel, &key);
if (!pval)
return 0;
trace_printk(fmt, sizeof(fmt), *pval);
return 0;
}
char _license[] SEC("license") = "GPL";
int _version SEC("version") = LINUX_VERSION_CODE;
/************************* END ***************************/
- Normal case:
# ./perf record -e './test_bpf_map_1.c/map:channel.value=10/' usleep 10
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
- Error case:
# ./perf record -e './test_bpf_map_1.c/map:channel.value/' usleep 10
event syntax error: '..ps:channel:value/'
\___ Config value not set (missing '=')
Hint: Valid config term:
map:[<arraymap>]:value=[value]
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
# ./perf record -e './test_bpf_map_1.c/xmap:channel.value=10/' usleep 10
event syntax error: '..pf_map_1.c/xmap:channel.value=10/'
\___ Invalid object config option
[SNIP]
# ./perf record -e './test_bpf_map_1.c/map:xchannel.value=10/' usleep 10
event syntax error: '..p_1.c/map:xchannel.value=10/'
\___ Target map not exist
[SNIP]
# ./perf record -e './test_bpf_map_1.c/map:channel.xvalue=10/' usleep 10
event syntax error: '..ps:channel.xvalue=10/'
\___ Invalid object map config option
[SNIP]
# ./perf record -e './test_bpf_map_1.c/map:channel.value=x10/' usleep 10
event syntax error: '..nnel.value=x10/'
\___ Incorrect value type for map
[SNIP]
Change BPF_MAP_TYPE_ARRAY to '1' in test_bpf_map_1.c:
# ./perf record -e './test_bpf_map_1.c/map:channel.value=10/' usleep 10
event syntax error: '..ps:channel.value=10/'
\___ Can't use this config term to this type of map
Hint: Valid config term:
map:[<arraymap>].value=[value]
(add -v to see detail)
Signed-off-by: Wang Nan <wangnan0@huawei.com>
[for parser part]
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456132275-98875-5-git-send-email-wangnan0@huawei.com
Signed-off-by: He Kuang <hekuang@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-22 16:10:31 +07:00
|
|
|
PE_BPF_SOURCE opt_event_config
|
2015-10-14 19:41:20 +07:00
|
|
|
{
|
|
|
|
|
struct parse_events_evlist *data = _data;
|
|
|
|
|
struct list_head *list;
|
|
|
|
|
|
|
|
|
|
ALLOC_LIST(list);
|
perf tools: Enable BPF object configure syntax
This patch adds the final step for BPF map configuration. A new syntax
is appended into parser so user can config BPF objects through '/' '/'
enclosed config terms.
After this patch, following syntax is available:
# perf record -e ./test_bpf_map_1.c/map:channel.value=10/ ...
It would takes effect after appling following commits.
Test result:
# cat ./test_bpf_map_1.c
/************************ BEGIN **************************/
#include <uapi/linux/bpf.h>
#define SEC(NAME) __attribute__((section(NAME), used))
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
};
static void *(*map_lookup_elem)(struct bpf_map_def *, void *) =
(void *)BPF_FUNC_map_lookup_elem;
static int (*trace_printk)(const char *fmt, int fmt_size, ...) =
(void *)BPF_FUNC_trace_printk;
struct bpf_map_def SEC("maps") channel = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(int),
.max_entries = 1,
};
SEC("func=sys_nanosleep")
int func(void *ctx)
{
int key = 0;
char fmt[] = "%d\n";
int *pval = map_lookup_elem(&channel, &key);
if (!pval)
return 0;
trace_printk(fmt, sizeof(fmt), *pval);
return 0;
}
char _license[] SEC("license") = "GPL";
int _version SEC("version") = LINUX_VERSION_CODE;
/************************* END ***************************/
- Normal case:
# ./perf record -e './test_bpf_map_1.c/map:channel.value=10/' usleep 10
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
- Error case:
# ./perf record -e './test_bpf_map_1.c/map:channel.value/' usleep 10
event syntax error: '..ps:channel:value/'
\___ Config value not set (missing '=')
Hint: Valid config term:
map:[<arraymap>]:value=[value]
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
# ./perf record -e './test_bpf_map_1.c/xmap:channel.value=10/' usleep 10
event syntax error: '..pf_map_1.c/xmap:channel.value=10/'
\___ Invalid object config option
[SNIP]
# ./perf record -e './test_bpf_map_1.c/map:xchannel.value=10/' usleep 10
event syntax error: '..p_1.c/map:xchannel.value=10/'
\___ Target map not exist
[SNIP]
# ./perf record -e './test_bpf_map_1.c/map:channel.xvalue=10/' usleep 10
event syntax error: '..ps:channel.xvalue=10/'
\___ Invalid object map config option
[SNIP]
# ./perf record -e './test_bpf_map_1.c/map:channel.value=x10/' usleep 10
event syntax error: '..nnel.value=x10/'
\___ Incorrect value type for map
[SNIP]
Change BPF_MAP_TYPE_ARRAY to '1' in test_bpf_map_1.c:
# ./perf record -e './test_bpf_map_1.c/map:channel.value=10/' usleep 10
event syntax error: '..ps:channel.value=10/'
\___ Can't use this config term to this type of map
Hint: Valid config term:
map:[<arraymap>].value=[value]
(add -v to see detail)
Signed-off-by: Wang Nan <wangnan0@huawei.com>
[for parser part]
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456132275-98875-5-git-send-email-wangnan0@huawei.com
Signed-off-by: He Kuang <hekuang@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-22 16:10:31 +07:00
|
|
|
ABORT_ON(parse_events_load_bpf(data, list, $1, true, $2));
|
|
|
|
|
parse_events_terms__delete($2);
|
perf tools: Enable passing bpf object file to --event
By introducing new rules in tools/perf/util/parse-events.[ly], this
patch enables 'perf record --event bpf_file.o' to select events by an
eBPF object file. It calls parse_events_load_bpf() to load that file,
which uses bpf__prepare_load() and finally calls bpf_object__open() for
the object files.
After applying this patch, commands like:
# perf record --event foo.o sleep
become possible.
However, at this point it is unable to link any useful things onto the
evsel list because the creating of probe points and BPF program
attaching have not been implemented. Before real events are possible to
be extracted, to avoid perf report error because of empty evsel list,
this patch link a dummy evsel. The dummy event related code will be
removed when probing and extracting code is ready.
Commiter notes:
Using it:
$ ls -la foo.o
ls: cannot access foo.o: No such file or directory
$ perf record --event foo.o sleep
libbpf: failed to open foo.o: No such file or directory
event syntax error: 'foo.o'
\___ BPF object file 'foo.o' is invalid
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
$
$ file /tmp/build/perf/perf.o
/tmp/build/perf/perf.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
$ perf record --event /tmp/build/perf/perf.o sleep
libbpf: /tmp/build/perf/perf.o is not an eBPF object file
event syntax error: '/tmp/build/perf/perf.o'
\___ BPF object file '/tmp/build/perf/perf.o' is invalid
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
$
$ file /tmp/foo.o
/tmp/foo.o: ELF 64-bit LSB relocatable, no machine, version 1 (SYSV), not stripped
$ perf record --event /tmp/foo.o sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.013 MB perf.data ]
$ perf evlist
/tmp/foo.o
$ perf evlist -v
/tmp/foo.o: type: 1, size: 112, config: 0x9, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
$
So, type 1 is PERF_TYPE_SOFTWARE, config 0x9 is PERF_COUNT_SW_DUMMY, ok.
$ perf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1444826502-49291-4-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-14 19:41:14 +07:00
|
|
|
$$ = list;
|
|
|
|
|
}
|
|
|
|
|
|
2016-02-20 04:45:12 +07:00
|
|
|
opt_event_config:
|
|
|
|
|
'/' event_config '/'
|
|
|
|
|
{
|
|
|
|
|
$$ = $2;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
'/' '/'
|
|
|
|
|
{
|
|
|
|
|
$$ = NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
$$ = NULL;
|
|
|
|
|
}
|
|
|
|
|
|
2012-08-08 17:14:14 +07:00
|
|
|
start_terms: event_config
|
2012-06-15 13:31:40 +07:00
|
|
|
{
|
2013-01-19 02:56:57 +07:00
|
|
|
struct parse_events_terms *data = _data;
|
2012-06-15 13:31:40 +07:00
|
|
|
data->terms = $1;
|
|
|
|
|
}
|
|
|
|
|
|
2012-03-16 02:09:16 +07:00
|
|
|
event_config:
|
|
|
|
|
event_config ',' event_term
|
|
|
|
|
{
|
|
|
|
|
struct list_head *head = $1;
|
2013-01-19 02:29:49 +07:00
|
|
|
struct parse_events_term *term = $3;
|
2012-03-16 02:09:16 +07:00
|
|
|
|
|
|
|
|
ABORT_ON(!head);
|
|
|
|
|
list_add_tail(&term->list, head);
|
|
|
|
|
$$ = $1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
event_term
|
|
|
|
|
{
|
|
|
|
|
struct list_head *head = malloc(sizeof(*head));
|
2013-01-19 02:29:49 +07:00
|
|
|
struct parse_events_term *term = $1;
|
2012-03-16 02:09:16 +07:00
|
|
|
|
|
|
|
|
ABORT_ON(!head);
|
|
|
|
|
INIT_LIST_HEAD(head);
|
|
|
|
|
list_add_tail(&term->list, head);
|
|
|
|
|
$$ = head;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
event_term:
|
|
|
|
|
PE_NAME '=' PE_NAME
|
|
|
|
|
{
|
2013-01-19 02:29:49 +07:00
|
|
|
struct parse_events_term *term;
|
2012-03-16 02:09:16 +07:00
|
|
|
|
2013-01-19 02:29:49 +07:00
|
|
|
ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
|
2015-04-23 02:10:20 +07:00
|
|
|
$1, $3, &@1, &@3));
|
2012-03-16 02:09:16 +07:00
|
|
|
$$ = term;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
PE_NAME '=' PE_VALUE
|
|
|
|
|
{
|
2013-01-19 02:29:49 +07:00
|
|
|
struct parse_events_term *term;
|
2012-03-16 02:09:16 +07:00
|
|
|
|
2013-01-19 02:29:49 +07:00
|
|
|
ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
|
2015-04-23 02:10:20 +07:00
|
|
|
$1, $3, &@1, &@3));
|
2012-03-16 02:09:16 +07:00
|
|
|
$$ = term;
|
|
|
|
|
}
|
|
|
|
|
|
|
2012-10-10 19:53:17 +07:00
|
|
|
PE_NAME '=' PE_VALUE_SYM_HW
|
|
|
|
|
{
|
2013-01-19 02:29:49 +07:00
|
|
|
struct parse_events_term *term;
|
2012-10-10 19:53:17 +07:00
|
|
|
int config = $3 & 255;
|
|
|
|
|
|
2013-01-19 02:29:49 +07:00
|
|
|
ABORT_ON(parse_events_term__sym_hw(&term, $1, config));
|
2012-10-10 19:53:17 +07:00
|
|
|
$$ = term;
|
|
|
|
|
}
|
|
|
|
|
|
|
2012-03-16 02:09:16 +07:00
|
|
|
PE_NAME
|
|
|
|
|
{
|
2013-01-19 02:29:49 +07:00
|
|
|
struct parse_events_term *term;
|
2012-03-16 02:09:16 +07:00
|
|
|
|
2013-01-19 02:29:49 +07:00
|
|
|
ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
|
2015-04-23 02:10:20 +07:00
|
|
|
$1, 1, &@1, NULL));
|
2012-03-16 02:09:16 +07:00
|
|
|
$$ = term;
|
|
|
|
|
}
|
|
|
|
|
|
|
2012-10-10 19:53:17 +07:00
|
|
|
PE_VALUE_SYM_HW
|
|
|
|
|
{
|
2013-01-19 02:29:49 +07:00
|
|
|
struct parse_events_term *term;
|
2012-10-10 19:53:17 +07:00
|
|
|
int config = $1 & 255;
|
|
|
|
|
|
2013-01-19 02:29:49 +07:00
|
|
|
ABORT_ON(parse_events_term__sym_hw(&term, NULL, config));
|
2012-10-10 19:53:17 +07:00
|
|
|
$$ = term;
|
|
|
|
|
}
|
|
|
|
|
|
|
2012-05-21 14:12:53 +07:00
|
|
|
PE_TERM '=' PE_NAME
|
|
|
|
|
{
|
2013-01-19 02:29:49 +07:00
|
|
|
struct parse_events_term *term;
|
2012-05-21 14:12:53 +07:00
|
|
|
|
2015-04-23 02:10:20 +07:00
|
|
|
ABORT_ON(parse_events_term__str(&term, (int)$1, NULL, $3, &@1, &@3));
|
2012-05-21 14:12:53 +07:00
|
|
|
$$ = term;
|
|
|
|
|
}
|
|
|
|
|
|
|
2012-03-16 02:09:16 +07:00
|
|
|
PE_TERM '=' PE_VALUE
|
|
|
|
|
{
|
2013-01-19 02:29:49 +07:00
|
|
|
struct parse_events_term *term;
|
2012-03-16 02:09:16 +07:00
|
|
|
|
2015-04-23 02:10:20 +07:00
|
|
|
ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3, &@1, &@3));
|
2012-03-16 02:09:16 +07:00
|
|
|
$$ = term;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
PE_TERM
|
|
|
|
|
{
|
2013-01-19 02:29:49 +07:00
|
|
|
struct parse_events_term *term;
|
2012-03-16 02:09:16 +07:00
|
|
|
|
2015-04-23 02:10:20 +07:00
|
|
|
ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1, &@1, NULL));
|
2012-03-16 02:09:16 +07:00
|
|
|
$$ = term;
|
2012-03-16 02:09:15 +07:00
|
|
|
}
|
perf tools: Enable indices setting syntax for BPF map
This patch introduces a new syntax to perf event parser:
# perf record -e './test_bpf_map_3.c/map:channel.value[0,1,2,3...5]=101/' usleep 2
By utilizing the basic facilities in bpf-loader.c which allow setting
different slots in a BPF map separately, the newly introduced syntax
allows perf to control specific elements in a BPF map.
Test result:
# cat ./test_bpf_map_3.c
/************************ BEGIN **************************/
#include <uapi/linux/bpf.h>
#define SEC(NAME) __attribute__((section(NAME), used))
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
};
static void *(*map_lookup_elem)(struct bpf_map_def *, void *) =
(void *)BPF_FUNC_map_lookup_elem;
static int (*trace_printk)(const char *fmt, int fmt_size, ...) =
(void *)BPF_FUNC_trace_printk;
struct bpf_map_def SEC("maps") channel = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(unsigned char),
.max_entries = 100,
};
SEC("func=hrtimer_nanosleep rqtp->tv_nsec")
int func(void *ctx, int err, long nsec)
{
char fmt[] = "%ld\n";
long usec = nsec * 0x10624dd3 >> 38; // nsec / 1000
int key = (int)usec;
unsigned char *pval = map_lookup_elem(&channel, &key);
if (!pval)
return 0;
trace_printk(fmt, sizeof(fmt), (unsigned char)*pval);
return 0;
}
char _license[] SEC("license") = "GPL";
int _version SEC("version") = LINUX_VERSION_CODE;
/************************* END ***************************/
Normal case:
# echo "" > /sys/kernel/debug/tracing/trace
# ./perf record -e './test_bpf_map_3.c/map:channel.value[0,1,2,3...5]=101/' usleep 2
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
# cat /sys/kernel/debug/tracing/trace | grep usleep
usleep-405 [004] d... 2745423.547822: : 101
# ./perf record -e './test_bpf_map_3.c/map:channel.value[0...9,20...29]=102,map:channel.value[10...19]=103/' usleep 3
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
# ./perf record -e './test_bpf_map_3.c/map:channel.value[0...9,20...29]=102,map:channel.value[10...19]=103/' usleep 15
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data ]
# cat /sys/kernel/debug/tracing/trace | grep usleep
usleep-405 [004] d... 2745423.547822: : 101
usleep-655 [006] d... 2745434.122814: : 102
usleep-904 [006] d... 2745439.916264: : 103
# ./perf record -e './test_bpf_map_3.c/map:channel.value[all]=104/' usleep 99
# cat /sys/kernel/debug/tracing/trace | grep usleep
usleep-405 [004] d... 2745423.547822: : 101
usleep-655 [006] d... 2745434.122814: : 102
usleep-904 [006] d... 2745439.916264: : 103
usleep-1537 [003] d... 2745538.053737: : 104
Error case:
# ./perf record -e './test_bpf_map_3.c/map:channel.value[10...1000]=104/' usleep 99
event syntax error: '..annel.value[10...1000]=104/'
\___ Index too large
Hint: Valid config terms:
map:[<arraymap>].value<indices>=[value]
map:[<eventmap>].event<indices>=[event]
where <indices> is something like [0,3...5] or [all]
(add -v to see detail)
Run 'perf list' for a list of valid events
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
-e, --event <event> event selector. use 'perf list' to list available events
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456132275-98875-9-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-22 16:10:35 +07:00
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PE_NAME array '=' PE_NAME
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{
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struct parse_events_term *term;
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int i;
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ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
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$1, $4, &@1, &@4));
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term->array = $2;
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$$ = term;
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}
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PE_NAME array '=' PE_VALUE
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{
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struct parse_events_term *term;
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ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
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$1, $4, &@1, &@4));
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term->array = $2;
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$$ = term;
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}
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array:
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'[' array_terms ']'
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{
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$$ = $2;
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}
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PE_ARRAY_ALL
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{
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$$.nr_ranges = 0;
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$$.ranges = NULL;
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}
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array_terms:
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array_terms ',' array_term
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{
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struct parse_events_array new_array;
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new_array.nr_ranges = $1.nr_ranges + $3.nr_ranges;
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new_array.ranges = malloc(sizeof(new_array.ranges[0]) *
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new_array.nr_ranges);
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ABORT_ON(!new_array.ranges);
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memcpy(&new_array.ranges[0], $1.ranges,
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$1.nr_ranges * sizeof(new_array.ranges[0]));
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memcpy(&new_array.ranges[$1.nr_ranges], $3.ranges,
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$3.nr_ranges * sizeof(new_array.ranges[0]));
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free($1.ranges);
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free($3.ranges);
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$$ = new_array;
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}
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array_term
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array_term:
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PE_VALUE
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{
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struct parse_events_array array;
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array.nr_ranges = 1;
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array.ranges = malloc(sizeof(array.ranges[0]));
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ABORT_ON(!array.ranges);
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array.ranges[0].start = $1;
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array.ranges[0].length = 1;
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$$ = array;
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}
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PE_VALUE PE_ARRAY_RANGE PE_VALUE
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{
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struct parse_events_array array;
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ABORT_ON($3 < $1);
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array.nr_ranges = 1;
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array.ranges = malloc(sizeof(array.ranges[0]));
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ABORT_ON(!array.ranges);
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array.ranges[0].start = $1;
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array.ranges[0].length = $3 - $1 + 1;
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$$ = array;
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}
|
2012-03-16 02:09:15 +07:00
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sep_dc: ':' |
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2012-03-16 02:09:16 +07:00
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sep_slash_dc: '/' | ':' |
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2012-03-16 02:09:15 +07:00
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%%
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2015-04-23 02:10:17 +07:00
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void parse_events_error(YYLTYPE *loc, void *data,
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void *scanner __maybe_unused,
|
2012-09-11 05:15:03 +07:00
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char const *msg __maybe_unused)
|
2012-03-16 02:09:15 +07:00
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{
|
2015-04-23 02:10:17 +07:00
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parse_events_evlist_error(data, loc->last_column, "parser error");
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2012-03-16 02:09:15 +07:00
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}
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