kernel/tools/perf/tests/event-times.c, branch linux-5.14.y

perf evlist: Use the right prefix for 'struct evlist' create maps methods

2020-11-30T17:56:52Z

perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo

perf evlist: Use the right prefix for 'struct evlist' 'workload' methods

2020-11-30T12:26:54Z

perf evsel: Rename perf_evsel__open_per_() to evsel__open_per_()

2020-05-05T19:35:30Z

As those are not 'struct evsel' methods, not part of tools/lib/perf/, aka libperf, to whom the perf_ prefix belongs. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo

perf stat: Use affinity for opening events

2019-11-29T15:20:45Z

Restructure the event opening in perf stat to cycle through the events by CPU after setting affinity to that CPU. This eliminates IPI overhead in the perf API. We have to loop through the CPU in the outter builtin-stat code instead of leaving that to low level functions. It has to change the weak group fallback strategy slightly. Since we cannot easily undo the opens for other CPUs move the weak group retry to a separate loop. Before with a large test case with 94 CPUs: % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 42.75 4.050910 67 60046 110 perf_event_open After: 26.86 0.944396 16 58069 110 perf_event_open (the number changes slightly because the weak group retries work differently and the test case relies on weak groups) Committer notes: Added one of the hunks in a patch provided by Andi after I noticed that the "event times" 'perf test' entry was segfaulting. Signed-off-by: Andi Kleen Acked-by: Jiri Olsa Link: http://lore.kernel.org/lkml/20191121001522.180827-10-andi@firstfloor.org Link: http://lore.kernel.org/lkml/20191127232657.GL84886@tassilo.jf.intel.com # Fix Signed-off-by: Arnaldo Carvalho de Melo

libperf: Add perf_evlist__first()/last() functions

2019-09-25T12:51:48Z

Add perf_evlist__first()/last() functions to libperf, as internal functions and rename perf's origins to evlist__first/last. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20190913132355.21634-29-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Remove util.h from where it is not needed

2019-09-20T12:19:20Z

Check that it is not needed and remove, fixing up some fallout for places where it was only serving to get something else. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-9h6dg6lsqe2usyqjh5rrues4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf auxtrace: Uninline functions that touch perf_session

2019-09-01T01:24:10Z

So that we don't carry the session.h include directive in auxtrace.h, which in turn opens a can of worms of files that were getting all sorts of things via that include, fix them all. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-d2d83aovpgri2z75wlitquni@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf debug: Remove needless include directives from debug.h

2019-08-31T22:10:19Z

All we need there is a forward declaration for 'union perf_event', so remove it from there and add missing header directives in places using things from this indirect include. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-7ftk0ztstqub1tirjj8o8xbl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libperf: Adopt perf_evsel__read() function from tools/perf

2019-07-29T21:34:46Z

Move the perf_evsel__read() function to libperf as a public interface together with struct perf_counts_values for returning counter values. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Andi Kleen Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190721112506.12306-65-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libperf: Add perf_cpu_map__new()/perf_cpu_map__read() functions

2019-07-29T21:34:45Z

Moving the following functions from tools/perf: cpu_map__new() cpu_map__read() to libperf with the following names: perf_cpu_map__new() perf_cpu_map__read() Committer notes: Fixed up this one: tools/perf/arch/arm/util/cs-etm.c Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Andi Kleen Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190721112506.12306-44-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo