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Message-Id: <1382099356-4918-15-git-send-email-adrian.hunter@intel.com>
Date: Fri, 18 Oct 2013 15:29:11 +0300
From: Adrian Hunter <adrian.hunter@...el.com>
To: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
David Ahern <dsahern@...il.com>,
Frederic Weisbecker <fweisbec@...il.com>,
Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
Namhyung Kim <namhyung@...il.com>,
Paul Mackerras <paulus@...ba.org>,
Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 14/19] perf evlist: Add a debug print if event buffer mmap fails
Add a debug print if mmap of the perf event
ring buffer fails.
Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
---
tools/perf/util/evlist.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 07ba0a4..52e434a 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -600,6 +600,7 @@ static int __perf_evlist__mmap(struct perf_evlist *evlist,
evlist->mmap[idx].base = mmap(NULL, evlist->mmap_len, prot,
MAP_SHARED, fd, 0);
if (evlist->mmap[idx].base == MAP_FAILED) {
+ pr_debug2("failed to mmap perf event ring buffer\n");
evlist->mmap[idx].base = NULL;
return -1;
}
--
1.7.11.7
--
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