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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-04-20 20:06:02 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-04-25 12:49:17 -0300 |
| commit | 1df54290463e84b7b5eb26e5e6472167c3749901 (patch) | |
| tree | a992281f76373777b222f5f97216f85be2d2392a | |
| parent | 7ad356159542e1f0dd4703ff3604f67390657f57 (diff) | |
| download | linux-1df54290463e84b7b5eb26e5e6472167c3749901.tar.bz2 | |
perf trace: Make --pf honour --min-stack too
To check deeply nested page fault callchains.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-wuji34xx003kr88nmqt6jkgf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/builtin-trace.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index fc276d718172..a4b133fac82b 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2190,8 +2190,19 @@ static int trace__pgfault(struct trace *trace, char map_type = 'd'; struct thread_trace *ttrace; int err = -1; + int callchain_ret = 0; thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); + + if (sample->callchain) { + callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor); + if (callchain_ret == 0) { + if (callchain_cursor.nr < trace->min_stack) + goto out_put; + callchain_ret = 1; + } + } + ttrace = thread__trace(thread, trace->output); if (ttrace == NULL) goto out_put; @@ -2234,10 +2245,10 @@ static int trace__pgfault(struct trace *trace, fprintf(trace->output, " (%c%c)\n", map_type, al.level); - if (sample->callchain) { - if (trace__resolve_callchain(trace, evsel, sample, &callchain_cursor) == 0) - trace__fprintf_callchain(trace, sample); - } + if (callchain_ret > 0) + trace__fprintf_callchain(trace, sample); + else if (callchain_ret < 0) + pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel)); out: err = 0; out_put: |