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| author |   Kan Liang <kan.liang@linux.intel.com> | 2022-07-21 14:57:03 +0800 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-07-29 13:41:19 -0300 |
| commit | ff4207f79307dc4910a27771e4306e1a64fde3e1 (patch) | |
| tree | 50a38300610462658e224d7514d97702fb546718 /tools/perf/arch | |
| parent | perf stat: Revert "perf stat: Add default hybrid events" (diff) | |
| download | linux-dev-ff4207f79307dc4910a27771e4306e1a64fde3e1.tar.xz linux-dev-ff4207f79307dc4910a27771e4306e1a64fde3e1.zip | |
perf evsel: Add arch_evsel__hw_name()
The commit 55bcf6ef314ae8ba ("perf: Extend PERF_TYPE_HARDWARE and
PERF_TYPE_HW_CACHE") extends the two types to become PMU aware types for
a hybrid system. However, current evsel__hw_name doesn't take the PMU
type into account. It mistakenly returns the "unknown-hardware" for the
hardware event with a specific PMU type.
Add an arch specific arch_evsel__hw_name() to specially handle the PMU
aware hardware event.
Currently, the extend PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE is only
supported by X86. Only implement the specific arch_evsel__hw_name() for
X86 in the patch.
Nothing is changed for the other archs.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220721065706.2886112-3-zhengjun.xing@linux.intel.com
Signed-off-by: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/arch')
| -rw-r--r-- | tools/perf/arch/x86/util/evsel.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/perf/arch/x86/util/evsel.c b/tools/perf/arch/x86/util/evsel.c index 882c1a8c1ded..ea3972d785d1 100644 --- a/tools/perf/arch/x86/util/evsel.c +++ b/tools/perf/arch/x86/util/evsel.c @@ -66,6 +66,26 @@ bool arch_evsel__must_be_in_group(const struct evsel *evsel) strcasestr(evsel->name, "topdown")); } +int arch_evsel__hw_name(struct evsel *evsel, char *bf, size_t size) +{ + u64 event = evsel->core.attr.config & PERF_HW_EVENT_MASK; + u64 pmu = evsel->core.attr.config >> PERF_PMU_TYPE_SHIFT; + const char *event_name; + + if (event < PERF_COUNT_HW_MAX && evsel__hw_names[event]) + event_name = evsel__hw_names[event]; + else + event_name = "unknown-hardware"; + + /* The PMU type is not required for the non-hybrid platform. */ + if (!pmu) + return scnprintf(bf, size, "%s", event_name); + + return scnprintf(bf, size, "%s/%s/", + evsel->pmu_name ? evsel->pmu_name : "cpu", + event_name); +} + static void ibs_l3miss_warn(void) { pr_warning( |