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| author | Adrian Hunter <adrian.hunter@intel.com> | 2013-08-14 14:48:24 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-08-16 22:17:58 +0200 |
| commit | e3e1a54fce81ee045dd152deb5435b136cb0b75f (patch) | |
| tree | 136a7a440b953cce38dc8f347b9a76855ff572e0 /tools/perf/util/evlist.c | |
| parent | perf tools: Re-implement debug print function for linking python/perf.so (diff) | |
| download | linux-e3e1a54fce81ee045dd152deb5435b136cb0b75f.tar.xz linux-e3e1a54fce81ee045dd152deb5435b136cb0b75f.zip | |
perf tools: Add debug prints
It is useful to see the arguments to perf_event_open and whether the
perf events ring buffer was mmapped per-cpu or per-thread.
That information will now be displayed when verbose is 2 i.e option -vv.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1376484517-5339-3-git-send-email-adrian.hunter@intel.com
[ fixup trivial conflict with fcb14f7 ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evlist.c')
| -rw-r--r-- | tools/perf/util/evlist.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index c7d111f74553..1f5105ac5c85 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -14,6 +14,7 @@ #include "target.h" #include "evlist.h" #include "evsel.h" +#include "debug.h" #include <unistd.h> #include "parse-events.h" @@ -486,6 +487,7 @@ static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist, int prot, int m int nr_cpus = cpu_map__nr(evlist->cpus); int nr_threads = thread_map__nr(evlist->threads); + pr_debug2("perf event ring buffer mmapped per cpu\n"); for (cpu = 0; cpu < nr_cpus; cpu++) { int output = -1; @@ -524,6 +526,7 @@ static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist, int prot, in int thread; int nr_threads = thread_map__nr(evlist->threads); + pr_debug2("perf event ring buffer mmapped per thread\n"); for (thread = 0; thread < nr_threads; thread++) { int output = -1; |