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perf tools: Add stat config user level event

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Adding the stat config event to pass/store stat config data, so report
tools (report/script) know how to interpret stat data.

The config data is stored in a 'tag|value' way to allow for easy
extension and backwards compatibility.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-12-git-send-email-jolsa@kernel.org
[ stat_config_term_event -> stat_config_event_entry ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2015-10-25 15:51:27 +01:00 committed by Arnaldo Carvalho de Melo
parent eb12a1afdc
commit 374fb9e362
4 changed files with 47 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
tools/perf/util/event.c
View File

@ -39,6 +39,7 @@ static const char *perf_event__names[] = {
[PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR",
[PERF_RECORD_THREAD_MAP] = "THREAD_MAP",
[PERF_RECORD_CPU_MAP] = "CPU_MAP",
[PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG",
};
const char *perf_event__name(unsigned int id)

20
tools/perf/util/event.h
View File

@ -228,6 +228,7 @@ enum perf_user_event_type { /* above any possible kernel type */
PERF_RECORD_AUXTRACE_ERROR = 72,
PERF_RECORD_THREAD_MAP = 73,
PERF_RECORD_CPU_MAP = 74,
PERF_RECORD_STAT_CONFIG = 75,
PERF_RECORD_HEADER_MAX
};
@ -395,6 +396,24 @@ struct thread_map_event {
struct thread_map_event_entry entries[];
};
enum {
PERF_STAT_CONFIG_TERM__AGGR_MODE = 0,
PERF_STAT_CONFIG_TERM__INTERVAL = 1,
PERF_STAT_CONFIG_TERM__SCALE = 2,
PERF_STAT_CONFIG_TERM__MAX = 3,
};
struct stat_config_event_entry {
u64 tag;
u64 val;
};
struct stat_config_event {
struct perf_event_header header;
u64 nr;
struct stat_config_event_entry data[];
};
union perf_event {
struct perf_event_header header;
struct mmap_event mmap;
@ -419,6 +438,7 @@ union perf_event {
struct context_switch_event context_switch;
struct thread_map_event thread_map;
struct cpu_map_event cpu_map;
struct stat_config_event stat_config;
};
void perf_event__print_totals(void);

24
tools/perf/util/session.c
View File

@ -315,6 +315,15 @@ int process_event_cpu_map_stub(struct perf_tool *tool __maybe_unused,
return 0;
}
static
int process_event_stat_config_stub(struct perf_tool *tool __maybe_unused,
union perf_event *event __maybe_unused,
struct perf_session *session __maybe_unused)
{
dump_printf(": unhandled!\n");
return 0;
}
void perf_tool__fill_defaults(struct perf_tool *tool)
{
if (tool->sample == NULL)
@ -369,6 +378,8 @@ void perf_tool__fill_defaults(struct perf_tool *tool)
tool->thread_map = process_event_thread_map_stub;
if (tool->cpu_map == NULL)
tool->cpu_map = process_event_cpu_map_stub;
if (tool->stat_config == NULL)
tool->stat_config = process_event_stat_config_stub;
}
static void swap_sample_id_all(union perf_event *event, void *data)
@ -686,6 +697,16 @@ static void perf_event__cpu_map_swap(union perf_event *event,
}
}
static void perf_event__stat_config_swap(union perf_event *event,
bool sample_id_all __maybe_unused)
{
u64 size;
size = event->stat_config.nr * sizeof(event->stat_config.data[0]);
size += 1; /* nr item itself */
mem_bswap_64(&event->stat_config.nr, size);
}
typedef void (*perf_event__swap_op)(union perf_event *event,
bool sample_id_all);
@ -715,6 +736,7 @@ static perf_event__swap_op perf_event__swap_ops[] = {
[PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
[PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
[PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
[PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
[PERF_RECORD_HEADER_MAX] = NULL,
};
@ -1255,6 +1277,8 @@ static s64 perf_session__process_user_event(struct perf_session *session,
return tool->thread_map(tool, event, session);
case PERF_RECORD_CPU_MAP:
return tool->cpu_map(tool, event, session);
case PERF_RECORD_STAT_CONFIG:
return tool->stat_config(tool, event, session);
default:
return -EINVAL;
}

3
tools/perf/util/tool.h
View File

@ -57,7 +57,8 @@ struct perf_tool {
auxtrace_info,
auxtrace_error,
thread_map,
cpu_map;
cpu_map,
stat_config;
event_op3 auxtrace;
bool ordered_events;
bool ordering_requires_timestamps;