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| author | Jin Yao <yao.jin@linux.intel.com> | 2021-05-14 14:29:48 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-05-17 15:58:10 +0200 |
| commit | e119083bab80c2550065f6c0f10ba225a894595e (patch) | |
| tree | b25b45ca6bfd0002faa22852f94d132d2f32fe1b /tools/perf/util/env.h | |
| parent | perf header: Support HYBRID_TOPOLOGY feature (diff) | |
| download | linux-e119083bab80c2550065f6c0f10ba225a894595e.tar.xz linux-e119083bab80c2550065f6c0f10ba225a894595e.zip | |
perf header: Support HYBRID_CPU_PMU_CAPS feature
Perf has supported the CPU_PMU_CAPS feature to display a list of CPU PMU
capabilities. But on a hybrid platform, it may have several CPU PMUs (such
as "cpu_core" and "cpu_atom"). The CPU_PMU_CAPS feature is hard to extend
to support multiple CPU PMUs well if it needs to be compatible for the case
of old perf data file + new perf tool.
So for better compatibility we now create a new feature HYBRID_CPU_PMU_CAPS
in the header.
For the perf.data generated on hybrid platform,
root@otcpl-adl-s-2:~# perf report --header-only -I
# cpu_core pmu capabilities: branches=32, max_precise=3, pmu_name=alderlake_hybrid
# cpu_atom pmu capabilities: branches=32, max_precise=3, pmu_name=alderlake_hybrid
# missing features: TRACING_DATA BRANCH_STACK GROUP_DESC AUXTRACE STAT CLOCKID DIR_FORMAT COMPRESSED CPU_PMU_CAPS CLOCK_DATA
For the perf.data generated on non-hybrid platform
root@kbl-ppc:~# perf report --header-only -I
# cpu pmu capabilities: branches=32, max_precise=3, pmu_name=skylake
# missing features: TRACING_DATA BRANCH_STACK GROUP_DESC AUXTRACE STAT CLOCKID DIR_FORMAT COMPRESSED CLOCK_DATA HYBRID_TOPOLOGY HYBRID_CPU_PMU_CAPS
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: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210514122948.9472-3-yao.jin@linux.intel.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 | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h index e5e5deebe68d..6824a7423a2d 100644 --- a/tools/perf/util/env.h +++ b/tools/perf/util/env.h @@ -42,6 +42,13 @@ struct hybrid_node { char *cpus; }; +struct hybrid_cpc_node { + int nr_cpu_pmu_caps; + unsigned int max_branches; + char *cpu_pmu_caps; + char *pmu_name; +}; + struct perf_env { char *hostname; char *os_release; @@ -65,6 +72,7 @@ struct perf_env { int nr_groups; int nr_cpu_pmu_caps; int nr_hybrid_nodes; + int nr_hybrid_cpc_nodes; char *cmdline; const char **cmdline_argv; char *sibling_cores; @@ -84,6 +92,7 @@ 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; #ifdef HAVE_LIBBPF_SUPPORT /* * bpf_info_lock protects bpf rbtrees. This is needed because the |