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| author |   Adrian Hunter <adrian.hunter@intel.com> | 2021-10-27 11:03:30 +0300 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-10-27 16:20:08 -0300 |
| commit | b6778fe1bbe486e65439a50226b5c7b70dc11d94 (patch) | |
| tree | 1379000c0922df77acafe3e3996f8bae0b7d1c22 | |
| parent | perf auxtrace: Add missing Z option to ITRACE_HELP (diff) | |
| download | wireguard-linux-b6778fe1bbe486e65439a50226b5c7b70dc11d94.tar.xz wireguard-linux-b6778fe1bbe486e65439a50226b5c7b70dc11d94.zip | |
perf auxtrace: Add itrace A option to approximate IPC
Add an option to specify that synthesized IPC can be approximate, rather
than completely accurate.
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20211027080334.365596-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/Documentation/itrace.txt | 1 | ||||
| -rw-r--r-- | tools/perf/util/auxtrace.c | 3 | ||||
| -rw-r--r-- | tools/perf/util/auxtrace.h | 3 |
3 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt index 2d586fe5e4c5..141449e97bed 100644 --- a/tools/perf/Documentation/itrace.txt +++ b/tools/perf/Documentation/itrace.txt @@ -20,6 +20,7 @@ L synthesize last branch entries on existing event records s skip initial number of events q quicker (less detailed) decoding + A approximate IPC Z prefer to ignore timestamps (so-called "timeless" decoding) The default is all events i.e. the same as --itrace=ibxwpe, diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index 8d2865b9ade2..c679394b898d 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -1564,6 +1564,9 @@ int itrace_do_parse_synth_opts(struct itrace_synth_opts *synth_opts, case 'q': synth_opts->quick += 1; break; + case 'A': + synth_opts->approx_ipc = true; + break; case 'Z': synth_opts->timeless_decoding = true; break; diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index 20dc78d86d54..889f976ea1a0 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -84,6 +84,7 @@ enum itrace_period_type { * @thread_stack: feed branches to the thread_stack * @last_branch: add branch context to 'instruction' events * @add_last_branch: add branch context to existing event records + * @approx_ipc: approximate IPC * @flc: whether to synthesize first level cache events * @llc: whether to synthesize last level cache events * @tlb: whether to synthesize TLB events @@ -127,6 +128,7 @@ struct itrace_synth_opts { bool thread_stack; bool last_branch; bool add_last_branch; + bool approx_ipc; bool flc; bool llc; bool tlb; @@ -649,6 +651,7 @@ bool auxtrace__evsel_is_auxtrace(struct perf_session *session, " L[len]: synthesize last branch entries on existing event records\n" \ " sNUMBER: skip initial number of events\n" \ " q: quicker (less detailed) decoding\n" \ +" A: approximate IPC\n" \ " Z: prefer to ignore timestamps (so-called \"timeless\" decoding)\n" \ " PERIOD[ns|us|ms|i|t]: specify period to sample stream\n" \ " concatenate multiple options. Default is ibxwpe or cewp\n" |