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| author | Ravi Bangoria <ravi.bangoria@amd.com> | 2022-06-04 10:15:16 +0530 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-06-24 13:18:55 -0300 |
| commit | 2139f7424819818afc25fbfd0effda4babe235f6 (patch) | |
| tree | a0ca575eea30cf2361612202fbe69350f0eb2ce3 /tools/perf/util/env.h | |
| parent | ff34eaa820231dfaecca9c048637bd86ba294bc7 (diff) | |
| download | linux-2139f7424819818afc25fbfd0effda4babe235f6.tar.gz linux-2139f7424819818afc25fbfd0effda4babe235f6.tar.bz2 linux-2139f7424819818afc25fbfd0effda4babe235f6.zip | |
perf header: Record non-CPU PMU capabilities
PMUs advertise their capabilities via sysfs attribute files but
the perf tool currently parses only core(CPU) or hybrid core PMU
capabilities. Add support of recording non-core PMU capabilities
int perf.data header.
Note that a newly proposed HEADER_PMU_CAPS is replacing existing
HEADER_HYBRID_CPU_PMU_CAPS. Special care is taken for hybrid core
PMUs by writing their capabilities first in the perf.data header
to make sure new perf.data file being read by old perf tool does
not break.
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <rrichter@amd.com>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: like.xu.linux@gmail.com
Cc: x86@kernel.org
Link: https://lore.kernel.org/r/20220604044519.594-6-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/env.h')
| -rw-r--r-- | tools/perf/util/env.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h index 43aab59f7322..4566c51f2fd9 100644 --- a/tools/perf/util/env.h +++ b/tools/perf/util/env.h @@ -43,10 +43,10 @@ struct hybrid_node { char *cpus; }; -struct hybrid_cpc_node { - int nr_cpu_pmu_caps; +struct pmu_caps { + int nr_caps; unsigned int max_branches; - char **cpu_pmu_caps; + char **caps; char *pmu_name; }; @@ -74,7 +74,7 @@ struct perf_env { int nr_groups; int nr_cpu_pmu_caps; int nr_hybrid_nodes; - int nr_hybrid_cpc_nodes; + int nr_pmus_with_caps; char *cmdline; const char **cmdline_argv; char *sibling_cores; @@ -94,7 +94,7 @@ struct perf_env { struct memory_node *memory_nodes; unsigned long long memory_bsize; struct hybrid_node *hybrid_nodes; - struct hybrid_cpc_node *hybrid_cpc_nodes; + struct pmu_caps *pmu_caps; #ifdef HAVE_LIBBPF_SUPPORT /* * bpf_info_lock protects bpf rbtrees. This is needed because the @@ -172,4 +172,6 @@ bool perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node); struct btf_node *perf_env__find_btf(struct perf_env *env, __u32 btf_id); int perf_env__numa_node(struct perf_env *env, struct perf_cpu cpu); +char *perf_env__find_pmu_cap(struct perf_env *env, const char *pmu_name, + const char *cap); #endif /* __PERF_ENV_H */ |