From: Adrian Hunter <adrian.hunter@intel.com>
To: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
Ingo Molnar <mingo@redhat.com>,
linux-kernel@vger.kernel.org, David Ahern <dsahern@gmail.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Jiri Olsa <jolsa@redhat.com>, Mike Galbraith <efault@gmx.de>,
Namhyung Kim <namhyung@gmail.com>,
Paul Mackerras <paulus@samba.org>,
Stephane Eranian <eranian@google.com>
Subject: [PATCH 02/19] perf evsel: Add a debug print if perf_event_open fails
Date: Fri, 18 Oct 2013 15:28:59 +0300 [thread overview]
Message-ID: <1382099356-4918-3-git-send-email-adrian.hunter@intel.com> (raw)
In-Reply-To: <1382099356-4918-1-git-send-email-adrian.hunter@intel.com>
There is a debug print (at verbose level 2) for each
call to perf_event_open. Add another debug print if
the call fails, and print the error number.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
tools/perf/util/evsel.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 291b18a..1bb4f19 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1052,6 +1052,8 @@ retry_open:
group_fd, flags);
if (FD(evsel, cpu, thread) < 0) {
err = -errno;
+ pr_debug2("perf_event_open failed, error %d\n",
+ err);
goto try_fallback;
}
set_rlimit = NO_CHANGE;
--
1.7.11.7
next prev parent reply other threads:[~2013-10-18 12:30 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-18 12:28 [PATCH 00/19] perf tools: fixes and tweaks Adrian Hunter
2013-10-18 12:28 ` [PATCH 01/19] perf evsel: Add missing 'mmap2' from debug print Adrian Hunter
2013-10-23 7:53 ` [tip:perf/core] " tip-bot for Adrian Hunter
2013-10-18 12:28 ` Adrian Hunter [this message]
2013-10-18 12:29 ` [PATCH 03/19] perf record: Improve write_output error message Adrian Hunter
2013-10-20 20:43 ` Jiri Olsa
2013-10-21 6:07 ` Adrian Hunter
2013-10-21 8:48 ` Jiri Olsa
2013-10-23 7:53 ` [tip:perf/core] " tip-bot for Adrian Hunter
2013-10-18 12:29 ` [PATCH 04/19] perf evsel: Add missing decrement in id sample parsing Adrian Hunter
2013-10-20 20:44 ` Jiri Olsa
2013-10-23 7:53 ` [tip:perf/core] " tip-bot for Adrian Hunter
2013-10-18 12:29 ` [PATCH 05/19] perf session: Add missing sample flush for piped events Adrian Hunter
2013-10-20 20:45 ` Jiri Olsa
2013-10-23 7:53 ` [tip:perf/core] " tip-bot for Adrian Hunter
2013-10-18 12:29 ` [PATCH 06/19] perf session: Add missing members to perf_event__attr_swap() Adrian Hunter
2013-10-20 20:47 ` Jiri Olsa
2013-10-23 7:53 ` [tip:perf/core] " tip-bot for Adrian Hunter
2013-10-18 12:29 ` [PATCH 07/19] perf script: Set up output options for in-stream attributes Adrian Hunter
2013-10-18 13:30 ` David Ahern
2013-10-18 14:32 ` Arnaldo Carvalho de Melo
2013-10-22 7:35 ` Adrian Hunter
2013-10-18 12:29 ` [PATCH 08/19] perf inject: Do not repipe attributes to a perf.data file Adrian Hunter
2013-10-18 12:29 ` [PATCH 09/19] perf tools: Fix 32-bit cross build Adrian Hunter
2013-10-20 20:42 ` Jiri Olsa
2013-10-21 5:53 ` Adrian Hunter
2013-10-21 8:46 ` Jiri Olsa
2013-10-21 9:02 ` Adrian Hunter
2013-10-21 14:12 ` Arnaldo Carvalho de Melo
2013-10-21 18:29 ` Adrian Hunter
2013-10-18 12:29 ` [PATCH 10/19] perf evlist: Fix 32-bit build error Adrian Hunter
2013-10-23 7:53 ` [tip:perf/core] " tip-bot for Adrian Hunter
2013-10-18 12:29 ` [PATCH 11/19] perf tools: Fix test_on_exit for 32-bit build Adrian Hunter
2013-10-23 7:53 ` [tip:perf/core] " tip-bot for Adrian Hunter
2013-10-18 12:29 ` [PATCH 12/19] perf tools: Fix bench/numa.c " Adrian Hunter
2013-10-23 7:54 ` [tip:perf/core] " tip-bot for Adrian Hunter
2013-10-18 12:29 ` [PATCH 13/19] perf tools: Fix libunwind build and feature detection " Adrian Hunter
2013-10-20 20:43 ` Jiri Olsa
2013-10-21 14:14 ` Arnaldo Carvalho de Melo
2013-10-22 7:40 ` Adrian Hunter
2013-10-18 12:29 ` [PATCH 14/19] perf evlist: Add a debug print if event buffer mmap fails Adrian Hunter
2013-10-20 20:43 ` Jiri Olsa
2013-10-18 12:29 ` [PATCH 15/19] perf tools: fix perf_evlist__mmap comments Adrian Hunter
2013-10-23 7:54 ` [tip:perf/core] perf evlist: Fix " tip-bot for Adrian Hunter
2013-10-18 12:29 ` [PATCH 16/19] perf tools: factor out duplicated evlist mmap code Adrian Hunter
2013-10-23 7:54 ` [tip:perf/core] perf evlist: Factor out duplicated " tip-bot for Adrian Hunter
2013-10-18 12:29 ` [PATCH 17/19] perf script: print addr by default for BTS Adrian Hunter
2013-10-18 18:20 ` David Ahern
2013-10-23 7:54 ` [tip:perf/core] perf script: Print " tip-bot for Adrian Hunter
2013-10-18 12:29 ` [PATCH 18/19] perf record: add an option to force per-cpu mmaps Adrian Hunter
2013-10-18 12:29 ` [PATCH 19/19] perf tools: allow non-matching sample types Adrian Hunter
2013-10-18 14:25 ` David Ahern
2013-10-18 14:50 ` Adrian Hunter
2013-10-18 15:03 ` David Ahern
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