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| author |   Athira Rajeev <atrajeev@linux.vnet.ibm.com> | 2021-03-22 10:57:26 -0400 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-03-26 08:49:54 -0300 |
| commit | 06e5ca746c07380dfe0e4c3e10c34a6daa69eae6 (patch) | |
| tree | 9a88e46fb2444019aed37e0f825c3d00dc1b9a45 /tools/perf/util/sort.h | |
| parent | perf powerpc: Add support for PERF_SAMPLE_WEIGHT_STRUCT (diff) | |
| download | linux-dev-06e5ca746c07380dfe0e4c3e10c34a6daa69eae6.tar.xz linux-dev-06e5ca746c07380dfe0e4c3e10c34a6daa69eae6.zip | |
perf tools: Support pipeline stage cycles for powerpc
The pipeline stage cycles details can be recorded on powerpc from the
contents of Performance Monitor Unit (PMU) registers. On ISA v3.1
platform, sampling registers exposes the cycles spent in different
pipeline stages. Patch adds perf tools support to present two of the
cycle counter information along with memory latency (weight).
Re-use the field 'ins_lat' for storing the first pipeline stage cycle.
This is stored in 'var2_w' field of 'perf_sample_weight'.
Add a new field 'p_stage_cyc' to store the second pipeline stage cycle
which is stored in 'var3_w' field of perf_sample_weight.
Add new sort function 'Pipeline Stage Cycle' and include this in
default_mem_sort_order[]. This new sort function may be used to denote
some other pipeline stage in another architecture. So add this to list
of sort entries that can have dynamic header string.
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Reviewed-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Link: https://lore.kernel.org/r/1616425047-1666-5-git-send-email-atrajeev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/sort.h')
| -rw-r--r-- | tools/perf/util/sort.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h index 63f67a3f3630..87a092645aa7 100644 --- a/tools/perf/util/sort.h +++ b/tools/perf/util/sort.h @@ -51,6 +51,7 @@ struct he_stat { u64 period_guest_us; u64 weight; u64 ins_lat; + u64 p_stage_cyc; u32 nr_events; }; @@ -234,6 +235,7 @@ enum sort_type { SORT_CODE_PAGE_SIZE, SORT_LOCAL_INS_LAT, SORT_GLOBAL_INS_LAT, + SORT_PIPELINE_STAGE_CYC, /* branch stack specific sort keys */ __SORT_BRANCH_STACK, |