diff options
author | Kan Liang <kan.liang@linux.intel.com> | 2023-01-04 23:13:48 +0300 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-02-03 23:24:02 +0300 |
commit | d7d213e04cf83318681f24870f1144e50d5c91bb (patch) | |
tree | 8d1886bcb767c03cd12d788cf76b10af2d33735f /tools/perf/arch/x86/util | |
parent | ebab291641bed48f62c608e3bf29071c435c2d9b (diff) | |
download | linux-d7d213e04cf83318681f24870f1144e50d5c91bb.tar.xz |
perf report: Support Retire Latency
The Retire Latency field is added in the var3_w of the
PERF_SAMPLE_WEIGHT_STRUCT. The Retire Latency reports pipeline stall of
this instruction compared to the previous instruction in cycles. That's
quite useful to display the information with perf mem report.
The p_stage_cyc for Power is also from the var3_w. Union the p_stage_cyc
and retire_lat to share the code.
Implement X86 specific codes to display the X86 specific header.
Add a new sort key retire_lat for the Retire Latency.
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20230104201349.1451191-8-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/arch/x86/util')
-rw-r--r-- | tools/perf/arch/x86/util/event.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/perf/arch/x86/util/event.c b/tools/perf/arch/x86/util/event.c index a3acefe6d0c6..37b3feb53e8d 100644 --- a/tools/perf/arch/x86/util/event.c +++ b/tools/perf/arch/x86/util/event.c @@ -89,6 +89,7 @@ void arch_perf_parse_sample_weight(struct perf_sample *data, else { data->weight = weight.var1_dw; data->ins_lat = weight.var2_w; + data->retire_lat = weight.var3_w; } } @@ -102,3 +103,22 @@ void arch_perf_synthesize_sample_weight(const struct perf_sample *data, *array |= ((u64)data->ins_lat << 32); } } + +const char *arch_perf_header_entry(const char *se_header) +{ + if (!strcmp(se_header, "Local Pipeline Stage Cycle")) + return "Local Retire Latency"; + else if (!strcmp(se_header, "Pipeline Stage Cycle")) + return "Retire Latency"; + + return se_header; +} + +int arch_support_sort_key(const char *sort_key) +{ + if (!strcmp(sort_key, "p_stage_cyc")) + return 1; + if (!strcmp(sort_key, "local_p_stage_cyc")) + return 1; + return 0; +} |