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| author | James Clark <james.clark@linaro.org> | 2026-01-02 15:15:43 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2026-01-13 23:38:20 +0300 |
| commit | 6e052cfe47c7fea0ac7cae271c69c69f0db3ca0e (patch) | |
| tree | 30df2356a54f6d44cfdd0b8b7ca04c35f52c20e0 | |
| parent | a66f6242fbf521f8371d6cda5eaee6dc7668683b (diff) | |
| download | linux-6e052cfe47c7fea0ac7cae271c69c69f0db3ca0e.tar.xz | |
perf tools: Dump callchain context marker names
These are hard to interpret in the raw output because they are printed
as hex but are defined in perf_event.h as decimal. Make it much easier
to read the raw callchains by just printing their names.
For example:
$ perf report -D
1798195372321 0x4638 [0xb0]: PERF_RECORD_SAMPLE(IP, 0x4002): 44922/44922: 0x7c8046dd3400 period: 120218 addr: 0
... FP chain: nr:12
..... 0: fffffffffffffe00 (PERF_CONTEXT_USER)
..... 1: 00007c8046dd3400
..... 2: 00007c8046db86d3
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
[ Add PERF_CONTEXT_USER_DEFERRED too, as per Namhyung's review comment ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/session.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 4236503c8f6c..65fa9bdff1b8 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -841,6 +841,28 @@ static void callchain__lbr_callstack_printf(struct perf_sample *sample) } } +static const char *callchain_context_str(u64 ip) +{ + switch (ip) { + case PERF_CONTEXT_HV: + return " (PERF_CONTEXT_HV)"; + case PERF_CONTEXT_KERNEL: + return " (PERF_CONTEXT_KERNEL)"; + case PERF_CONTEXT_USER: + return " (PERF_CONTEXT_USER)"; + case PERF_CONTEXT_GUEST: + return " (PERF_CONTEXT_GUEST)"; + case PERF_CONTEXT_GUEST_KERNEL: + return " (PERF_CONTEXT_GUEST_KERNEL)"; + case PERF_CONTEXT_GUEST_USER: + return " (PERF_CONTEXT_GUEST_USER)"; + case PERF_CONTEXT_USER_DEFERRED: + return " (PERF_CONTEXT_USER_DEFERRED)"; + default: + return ""; + } +} + static void callchain__printf(struct evsel *evsel, struct perf_sample *sample) { @@ -853,8 +875,9 @@ static void callchain__printf(struct evsel *evsel, printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr); for (i = 0; i < callchain->nr; i++) - printf("..... %2d: %016" PRIx64 "\n", - i, callchain->ips[i]); + printf("..... %2d: %016" PRIx64 "%s\n", + i, callchain->ips[i], + callchain_context_str(callchain->ips[i])); if (sample->deferred_callchain) printf("...... (deferred)\n"); |