diff options
| author |   Namhyung Kim <namhyung@kernel.org> | 2022-10-03 13:46:46 -0700 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-10-06 08:03:53 -0300 |
| commit | 182bb594e0678b3ceac99f4ec3daa5d22ea3d0ce (patch) | |
| tree | 4ae7c492eaae49cb79ce36696357f1027d3e4dc6 /tools/perf/arch | |
| parent | perf tools: Get rid of evlist__add_on_all_cpus() (diff) | |
| download | linux-dev-182bb594e0678b3ceac99f4ec3daa5d22ea3d0ce.tar.xz linux-dev-182bb594e0678b3ceac99f4ec3daa5d22ea3d0ce.zip | |
perf tools: Add evlist__add_sched_switch()
Add a help to create a system-wide sched_switch event. One merit is
that it sets the system-wide bit before adding it to evlist so that
the libperf can handle the cpu and thread maps correctly.
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221003204647.1481128-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/arch')
| -rw-r--r-- | tools/perf/arch/x86/util/intel-pt.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c index 13933020a79e..793b35f2221a 100644 --- a/tools/perf/arch/x86/util/intel-pt.c +++ b/tools/perf/arch/x86/util/intel-pt.c @@ -11,6 +11,7 @@ #include <linux/bitops.h> #include <linux/log2.h> #include <linux/zalloc.h> +#include <linux/err.h> #include <cpuid.h> #include "../../../util/session.h" @@ -426,20 +427,14 @@ static int intel_pt_track_switches(struct evlist *evlist) if (!evlist__can_select_event(evlist, sched_switch)) return -EPERM; - err = parse_event(evlist, sched_switch); - if (err) { - pr_debug2("%s: failed to parse %s, error %d\n", + evsel = evlist__add_sched_switch(evlist, true); + if (IS_ERR(evsel)) { + err = PTR_ERR(evsel); + pr_debug2("%s: failed to create %s, error = %d\n", __func__, sched_switch, err); return err; } - evsel = evlist__last(evlist); - - evsel__set_sample_bit(evsel, CPU); - evsel__set_sample_bit(evsel, TIME); - - evsel->core.system_wide = true; - evsel->no_aux_samples = true; evsel->immediate = true; return 0; |