lkml.org 
[lkml]   [2013]   [Oct]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 14/19] perf evlist: Add a debug print if event buffer mmap fails
Date
Add a debug print if mmap of the perf event
ring buffer fails.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.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


\
 
 \ /
  Last update: 2013-10-18 16:21    [W:0.195 / U:1.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site