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perf bpf filter: Add more weight sample data support 

The weight data consists of a couple of fields with the
PERF_SAMPLE_WEIGHT_STRUCT.  Add weight{1,2,3} term to select them
separately.  Also add their aliases like 'ins_lat', 'p_stage_cyc' and
'retire_lat'.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Hao Luo <haoluo@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Clark <james.clark@arm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Song Liu <song@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20230314234237.3008956-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2023-03-14 16:42:33 -07:00 committed by Arnaldo Carvalho de Melo
parent 335818470f
commit 409bcd8067
2 changed files with 14 additions and 0 deletions
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6
tools/perf/util/bpf-filter.l
View File

@ -71,6 +71,12 @@ addr { return sample(PERF_SAMPLE_ADDR); }
period { return sample(PERF_SAMPLE_PERIOD); }
txn { return sample(PERF_SAMPLE_TRANSACTION); }
weight { return sample(PERF_SAMPLE_WEIGHT); }
weight1 { return sample_part(PERF_SAMPLE_WEIGHT_STRUCT, 1); }
weight2 { return sample_part(PERF_SAMPLE_WEIGHT_STRUCT, 2); }
weight3 { return sample_part(PERF_SAMPLE_WEIGHT_STRUCT, 3); }
ins_lat { return sample_part(PERF_SAMPLE_WEIGHT_STRUCT, 2); } /* alias for weight2 */
p_stage_cyc { return sample_part(PERF_SAMPLE_WEIGHT_STRUCT, 3); } /* alias for weight3 */
retire_lat { return sample_part(PERF_SAMPLE_WEIGHT_STRUCT, 3); } /* alias for weight3 */
phys_addr { return sample(PERF_SAMPLE_PHYS_ADDR); }
code_pgsz { return sample(PERF_SAMPLE_CODE_PAGE_SIZE); }
data_pgsz { return sample(PERF_SAMPLE_DATA_PAGE_SIZE); }

8
tools/perf/util/bpf_skel/sample_filter.bpf.c
View File

@ -54,6 +54,14 @@ static inline __u64 perf_get_sample(struct bpf_perf_event_data_kern *kctx,
return kctx->data->period;
case PERF_SAMPLE_TRANSACTION:
return kctx->data->txn;
case PERF_SAMPLE_WEIGHT_STRUCT:
if (entry->part == 1)
return kctx->data->weight.var1_dw;
if (entry->part == 2)
return kctx->data->weight.var2_w;
if (entry->part == 3)
return kctx->data->weight.var3_w;
/* fall through */
case PERF_SAMPLE_WEIGHT:
return kctx->data->weight.full;
case PERF_SAMPLE_PHYS_ADDR: