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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-01-04 15:40:08 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-01-05 19:52:01 +0300 |
| commit | 454a3bbe9b75eb8cbddffcf383fbb8e97ea78f52 (patch) | |
| tree | d10cbe4a83a625908abf35581922b8ed3d6df2eb /tools/perf | |
| parent | 74d91e3c6a66359bb754fb5d8a5b54fb6ba2f9a6 (diff) | |
| download | linux-454a3bbe9b75eb8cbddffcf383fbb8e97ea78f52.tar.xz | |
perf test: Clarify some error reports in the open syscall test
Rebooted my devel machine, first thing I ran was perf test, that expects
debugfs to be mounted, test fails. Be more clear about it.
Also add missing newlines and add more informative message when
sys_perf_event_open fails.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/builtin-test.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 6c991529f62b..1c984342a579 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -268,24 +268,26 @@ static int test__open_syscall_event(void) int id = trace_event__id("sys_enter_open"); if (id < 0) { - pr_debug("trace_event__id(\"sys_enter_open\") "); + pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); return -1; } threads = thread_map__new(-1, getpid()); if (threads == NULL) { - pr_debug("thread_map__new "); + pr_debug("thread_map__new\n"); return -1; } evsel = perf_evsel__new(PERF_TYPE_TRACEPOINT, id, 0); if (evsel == NULL) { - pr_debug("perf_evsel__new "); + pr_debug("perf_evsel__new\n"); goto out_thread_map_delete; } if (perf_evsel__open_per_thread(evsel, threads) < 0) { - pr_debug("perf_evsel__open_per_thread "); + pr_debug("failed to open counter: %s, " + "tweak /proc/sys/kernel/perf_event_paranoid?\n", + strerror(errno)); goto out_evsel_delete; } @@ -295,13 +297,15 @@ static int test__open_syscall_event(void) } if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) { - pr_debug("perf_evsel__open_read_on_cpu "); + pr_debug("perf_evsel__open_read_on_cpu\n"); goto out_close_fd; } - if (evsel->counts->cpu[0].val != nr_open_calls) - pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %Ld ", + if (evsel->counts->cpu[0].val != nr_open_calls) { + pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %Ld\n", nr_open_calls, evsel->counts->cpu[0].val); + goto out_close_fd; + } err = 0; out_close_fd: |