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ee29be625b
linux_dsm_epyc7002/tools/perf/util
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Arnaldo Carvalho de Melo ee29be625b perf tools: Save some loops using perf_evlist__id2evsel 
Since we already ask for PERF_SAMPLE_ID and use it to quickly find the
associated evsel, add handler func + data to struct perf_evsel to avoid
using chains of if(strcmp(event_name)) and also to avoid all the linear
list searches via trace_event_find.

To demonstrate the technique convert 'perf sched' to it:

 # perf sched record sleep 5m

And then:

 Performance counter stats for '/tmp/oldperf sched lat':

        646.929438 task-clock                #    0.999 CPUs utilized
                 9 context-switches          #    0.000 M/sec
                 0 CPU-migrations            #    0.000 M/sec
            20,901 page-faults               #    0.032 M/sec
     1,290,144,450 cycles                    #    1.994 GHz
   <not supported> stalled-cycles-frontend
   <not supported> stalled-cycles-backend
     1,606,158,439 instructions              #    1.24  insns per cycle
       339,088,395 branches                  #  524.151 M/sec
         4,550,735 branch-misses             #    1.34% of all branches

       0.647524759 seconds time elapsed

Versus:

 Performance counter stats for 'perf sched lat':

        473.564691 task-clock                #    0.999 CPUs utilized
                 9 context-switches          #    0.000 M/sec
                 0 CPU-migrations            #    0.000 M/sec
            20,903 page-faults               #    0.044 M/sec
       944,367,984 cycles                    #    1.994 GHz
   <not supported> stalled-cycles-frontend
   <not supported> stalled-cycles-backend
     1,442,385,571 instructions              #    1.53  insns per cycle
       308,383,106 branches                  #  651.195 M/sec
         4,481,784 branch-misses             #    1.45% of all branches

       0.474215751 seconds time elapsed

[root@emilia ~]#

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-1kbzpl74lwi6lavpqke2u2p3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2011-11-28 17:57:40 -02:00
..
include perf tools: Fix build against newer glibc 2011-08-18 07:24:53 -03:00
scripting-engines perf tools: Resolve machine earlier and pass it to perf_event_ops 2011-11-28 10:39:12 -02:00
ui perf symbols: Add nr_events to symbol_conf 2011-11-28 10:37:11 -02:00
abspath.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
alias.c perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
annotate.c perf symbols: Add nr_events to symbol_conf 2011-11-28 10:37:11 -02:00
annotate.h perf symbols: Add nr_events to symbol_conf 2011-11-28 10:37:11 -02:00
bitmap.c perf tools: Don't use code surrounded by __KERNEL__ 2010-05-02 12:00:44 -03:00
build-id.c perf tools: Rename perf_event_ops to perf_tool 2011-11-28 10:39:28 -02:00
build-id.h perf tools: Rename perf_event_ops to perf_tool 2011-11-28 10:39:28 -02:00
cache.h perf tools: Don't fallback to setup_pager unconditionally 2011-01-31 18:08:39 -02:00
callchain.c perf tools: Kill event_t typedef, use 'union perf_event' instead 2011-01-29 16:25:37 -02:00
callchain.h perf tools: Pass tool context in the the perf_event_ops functions 2011-11-28 10:38:56 -02:00
cgroup.c perf tools: Eliminate duplicate code and use PATH_MAX consistently 2011-11-28 10:11:04 -02:00
cgroup.h perf tool: Add cgroup support 2011-02-16 13:30:48 +01:00
color.c perf stat: Add -o and --append options 2011-08-18 07:46:13 -03:00
color.h perf hist: Replace ->print() routines by ->snprintf() equivalents 2010-04-02 16:28:15 -03:00
config.c doc: fix broken references 2011-09-27 18:08:04 +02:00
cpumap.c perf tools: Add missing cpu_map__delete() 2011-01-22 19:56:30 -02:00
cpumap.h perf tools: Add missing cpu_map__delete() 2011-01-22 19:56:30 -02:00
ctype.c perf tools: Move graph_line and graph_dotted_line from top 2009-11-23 21:55:20 +01:00
debug.c perf ui browser: Handle K_RESIZE in dialog windows 2011-10-26 13:15:07 -02:00
debug.h perf ui browser: Handle K_RESIZE in dialog windows 2011-10-26 13:15:07 -02:00
debugfs.c perf tools: Simplify debugfs mountpoint handling code 2011-11-28 10:11:28 -02:00
debugfs.h perf tools: Simplify debugfs mountpoint handling code 2011-11-28 10:11:28 -02:00
dwarf-aux.c perf probe: Filter out redundant inline-instances 2011-08-12 09:34:35 -03:00
dwarf-aux.h perf probe: Search concrete out-of-line instances 2011-08-12 09:32:10 -03:00
environment.c
event.c perf tools: Rename perf_event_ops to perf_tool 2011-11-28 10:39:28 -02:00
event.h perf tools: Rename perf_event_ops to perf_tool 2011-11-28 10:39:28 -02:00
evlist.c perf tools: Save some loops using perf_evlist__id2evsel 2011-11-28 17:57:40 -02:00
evlist.h perf tools: Save some loops using perf_evlist__id2evsel 2011-11-28 17:57:40 -02:00
evsel.c perf evsel: Introduce config attr method 2011-11-28 10:25:31 -02:00
evsel.h perf tools: Save some loops using perf_evlist__id2evsel 2011-11-28 17:57:40 -02:00
exec_cmd.c perf tools: Makefile: Remove various and sundry cruft 2011-02-18 07:43:06 -02:00
exec_cmd.h perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
generate-cmdlist.sh
header.c perf tools: Rename perf_event_ops to perf_tool 2011-11-28 10:39:28 -02:00
header.h perf tools: Rename perf_event_ops to perf_tool 2011-11-28 10:39:28 -02:00
help.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
help.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
hist.c perf hists: Fix recalculation of total_period when sorting entries 2011-10-27 09:19:48 -02:00
hist.h perf symbols: Add nr_events to symbol_conf 2011-11-28 10:37:11 -02:00
hweight.c perf tools: Don't use code surrounded by __KERNEL__ 2010-05-02 12:00:44 -03:00
levenshtein.c
levenshtein.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
map.c perf session: Move threads to struct machine 2011-11-28 10:35:31 -02:00
map.h perf tools: Resolve machine earlier and pass it to perf_event_ops 2011-11-28 10:39:12 -02:00
pager.c perf_counter tools: Remove dead code 2009-06-27 06:06:39 +02:00
parse-events.c perf tools: Simplify debugfs mountpoint handling code 2011-11-28 10:11:28 -02:00
parse-events.h perf tools: Simplify debugfs mountpoint handling code 2011-11-28 10:11:28 -02:00
parse-options.c perf options: Type check all the remaining OPT_ variants 2010-05-17 16:22:41 -03:00
parse-options.h perf options: add OPT_CALLBACK_DEFAULT_NOOPT 2010-12-06 15:33:29 -02:00
path.c perf tools: add test for strlcpy() 2010-08-21 11:22:47 -03:00
PERF-VERSION-GEN perf: clear out make flags when calling kernel make kernelver 2011-06-15 22:12:55 +02:00
probe-event.c perf probe: Fix to show correct error string 2011-10-10 15:13:23 -04:00
probe-event.h perf probe: Add probed module in front of function 2011-07-15 16:19:08 -04:00
probe-finder.c perf probe: Fix regression of variable finder 2011-09-23 14:33:19 -03:00
probe-finder.h perf tools: Eliminate duplicate code and use PATH_MAX consistently 2011-11-28 10:11:04 -02:00
pstack.c perf newt: Make <- zoom out filters 2010-05-14 20:05:21 -03:00
pstack.h perf ui: Move hists browser to util/ui/browsers/ 2010-08-10 16:11:08 -03:00
python.c perf evlist: Fix grouping of multiple events 2011-10-26 10:25:02 -02:00
quote.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
quote.h perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
run-command.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
run-command.h perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
session.c perf tools: Rename perf_event_ops to perf_tool 2011-11-28 10:39:28 -02:00
session.h perf tools: Rename perf_event_ops to perf_tool 2011-11-28 10:39:28 -02:00
setup.py perf evlist: Introduce add_tracepoints method 2011-11-28 10:25:11 -02:00
sigchain.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
sigchain.h perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
sort.c perf hists browser: Elide DSO column when it is set to just one DSO, ditto for threads 2011-10-20 08:02:30 -02:00
sort.h perf hists: Don't free decayed entries if in the annotation browser 2011-10-13 08:01:33 -03:00
strbuf.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
strbuf.h perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
strfilter.c perf: Fix missing strndup declaration 2011-03-04 01:17:18 +01:00
strfilter.h perf tools: Add strfilter for general purpose string filter 2011-01-28 09:19:38 -02:00
string.c perf probe: Move strtailcmp to string.c 2011-07-15 16:00:47 -04:00
strlist.c perf probe: Fix --del to update current event list 2009-12-15 20:22:01 +01:00
strlist.h perf tools: Add for_each macros for strlist 2009-12-15 20:22:02 +01:00
svghelper.c perf timechart: Fix black idle boxes in the title 2011-02-28 08:56:14 +01:00
svghelper.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
symbol.c perf symbols: Increase symbol KSYM_NAME_LEN size 2011-10-21 11:01:18 -02:00
symbol.h perf symbols: Add nr_events to symbol_conf 2011-11-28 10:37:11 -02:00
thread_map.c perf threads: Move thread_map to separate file 2011-01-24 10:59:00 -02:00
thread_map.h perf threads: Move thread_map to separate file 2011-01-24 10:59:00 -02:00
thread.c perf session: Move threads to struct machine 2011-11-28 10:35:31 -02:00
thread.h perf tools: Resolve machine earlier and pass it to perf_event_ops 2011-11-28 10:39:12 -02:00
tool.h perf tools: Save some loops using perf_evlist__id2evsel 2011-11-28 17:57:40 -02:00
top.c perf top: Reuse the 'report' hist_entry/hists classes 2011-10-07 16:56:44 -03:00
top.h perf top: Stop using globals for tool state 2011-11-28 10:39:44 -02:00
trace-event-info.c perf tools: Eliminate duplicate code and use PATH_MAX consistently 2011-11-28 10:11:04 -02:00
trace-event-parse.c perf: Fix parsing of __print_flags() in TP_printk() 2011-11-07 11:02:35 -05:00
trace-event-read.c perf: Use read() instead of lseek() in trace_event_read.c:skip() 2010-05-20 08:37:17 +02:00
trace-event-scripting.c perf tools: Resolve machine earlier and pass it to perf_event_ops 2011-11-28 10:39:12 -02:00
trace-event.h perf tools: Resolve machine earlier and pass it to perf_event_ops 2011-11-28 10:39:12 -02:00
types.h perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
usage.c perf top: Fall back to cpu-clock-tick hrtimer sampling if no cycle counter available 2009-06-07 17:31:52 +02:00
util.c perf util: Move do_read from session to util 2011-01-03 16:50:55 -02:00
util.h perf probe: Move strtailcmp to string.c 2011-07-15 16:00:47 -04:00
values.c perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
values.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
wrapper.c perf tools: remove xstrndup, xmalloc, xzalloc 2010-05-18 23:05:28 -03:00
xyarray.c perf tools: Introduce event selectors 2011-01-03 16:39:04 -02:00
xyarray.h perf tools: Introduce event selectors 2011-01-03 16:39:04 -02:00