diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-05-28 22:00:29 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-06-05 16:09:54 +0300 |
| commit | 27de9b2bd996de0ca4079c42c81c85158e10145c (patch) | |
| tree | 98202794dad73383f1a5e865445c3c04b91d068c /tools/perf/util/evsel.c | |
| parent | 9d0199cd2a7a326510fc7f731d7974ef2fbc03d0 (diff) | |
| download | linux-27de9b2bd996de0ca4079c42c81c85158e10145c.tar.xz | |
perf evsel: Add has_callchain() helper to make code more compact/clear
Its common to have the (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN),
so add an evsel__has_callchain(evsel) helper.
This will actually get more uses as we check that instead of
symbol_conf.use_callchain in places where that produces the same result
but makes this decision to be more fine grained, per evsel.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-145340oytbthatpfeaq1do18@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evsel.c')
| -rw-r--r-- | tools/perf/util/evsel.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 150db5ed7400..94fce4f537e9 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -2197,7 +2197,7 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, } } - if (type & PERF_SAMPLE_CALLCHAIN) { + if (evsel__has_callchain(evsel)) { const u64 max_callchain_nr = UINT64_MAX / sizeof(u64); OVERFLOW_CHECK_u64(array); @@ -2857,7 +2857,7 @@ int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, "Hint: Try again after reducing the number of events.\n" "Hint: Try increasing the limit with 'ulimit -n <limit>'"); case ENOMEM: - if ((evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) != 0 && + if (evsel__has_callchain(evsel) && access("/proc/sys/kernel/perf_event_max_stack", F_OK) == 0) return scnprintf(msg, size, "Not enough memory to setup event with callchain.\n" |