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| author | Jin Yao <yao.jin@linux.intel.com> | 2021-05-27 03:16:04 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-06-01 17:03:35 +0300 |
| commit | d2f327acc638312a96d0c0a20c56c7db945d30d7 (patch) | |
| tree | 2370157f70c7f4dcab9d09a4baf7ca3e4d0e5d83 /tools/perf/builtin-c2c.c | |
| parent | ddc11da5eb37e27a4b66cddcaf11233ef51b3a79 (diff) | |
| download | linux-d2f327acc638312a96d0c0a20c56c7db945d30d7.tar.xz | |
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/builtin-c2c.c')
| -rw-r--r-- | tools/perf/builtin-c2c.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c index e3b9d63077ef..a4fd375acdd1 100644 --- a/tools/perf/builtin-c2c.c +++ b/tools/perf/builtin-c2c.c @@ -2971,13 +2971,13 @@ static int perf_c2c__record(int argc, const char **argv) if (!e->supported) { pr_err("failed: event '%s' not supported\n", - perf_mem_events__name(j)); + perf_mem_events__name(j, NULL)); free(rec_argv); return -1; } rec_argv[i++] = "-e"; - rec_argv[i++] = perf_mem_events__name(j); + rec_argv[i++] = perf_mem_events__name(j, NULL); } if (all_user) |