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authorArnaldo Carvalho de Melo <acme@redhat.com>2018-05-28 22:00:29 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-06-05 16:09:54 +0300
commit27de9b2bd996de0ca4079c42c81c85158e10145c (patch)
tree98202794dad73383f1a5e865445c3c04b91d068c /tools/perf/util/evsel.c
parent9d0199cd2a7a326510fc7f731d7974ef2fbc03d0 (diff)
downloadlinux-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.c4
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"