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| author |   Jin Yao <yao.jin@linux.intel.com> | 2021-05-27 08:16:04 +0800 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-06-01 11:03:35 -0300 |
| commit | d2f327acc638312a96d0c0a20c56c7db945d30d7 (patch) | |
| tree | 2370157f70c7f4dcab9d09a4baf7ca3e4d0e5d83 /tools/perf/util | |
| parent | perf tools: Check mem-loads auxiliary event (diff) | |
| download | linux-dev-d2f327acc638312a96d0c0a20c56c7db945d30d7.tar.xz linux-dev-d2f327acc638312a96d0c0a20c56c7db945d30d7.zip | |
perf tools: Support pmu prefix for mem-load event
The perf_mem_events__name() can generate the mem-load event name.
It uses a variable 'mem_loads_name__init' to avoid generating the
event name every time (because perf_pmu__scan takes some time).
The perf_mem_events__name() assumes the pmu is "cpu" but it's not
correct for hybrid platform. For Alderlake, the pmu is "cpu_core" or
"cpu_atom"
Introduce a new parameter 'pmu_name' in perf_mem_events__name
to let the caller specify a pmu name.
Considering such event name is x86 specific, so move
perf_mem_events[] to arch/x86/util/mem-events.c.
We still keep the variable 'mem_loads_name__init' but it's only
used when pmu_name is NULL (compatible for original behavior). When
pmu_name is not NULL (e.g. "cpu_core"), this patch doesn't have
optimization. That can be implemented in follow up patch.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210527001610.10553-3-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/mem-events.c | 4 | ||||
| -rw-r--r-- | tools/perf/util/mem-events.h | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c index f93a852ad838..c736eaded06c 100644 --- a/tools/perf/util/mem-events.c +++ b/tools/perf/util/mem-events.c @@ -37,7 +37,7 @@ struct perf_mem_event * __weak perf_mem_events__ptr(int i) return &perf_mem_events[i]; } -char * __weak perf_mem_events__name(int i) +char * __weak perf_mem_events__name(int i, char *pmu_name __maybe_unused) { struct perf_mem_event *e = perf_mem_events__ptr(i); @@ -141,7 +141,7 @@ void perf_mem_events__list(void) fprintf(stderr, "%-13s%-*s%s\n", e->tag ?: "", verbose > 0 ? 25 : 0, - verbose > 0 ? perf_mem_events__name(j) : "", + verbose > 0 ? perf_mem_events__name(j, NULL) : "", e->supported ? ": available" : ""); } } diff --git a/tools/perf/util/mem-events.h b/tools/perf/util/mem-events.h index cacdebd65b8a..a3fa19093fd2 100644 --- a/tools/perf/util/mem-events.h +++ b/tools/perf/util/mem-events.h @@ -38,7 +38,7 @@ extern unsigned int perf_mem_events__loads_ldlat; int perf_mem_events__parse(const char *str); int perf_mem_events__init(void); -char *perf_mem_events__name(int i); +char *perf_mem_events__name(int i, char *pmu_name); struct perf_mem_event *perf_mem_events__ptr(int i); bool is_mem_loads_aux_event(struct evsel *leader); |