Messages in this thread Patch in this message | | | Subject | [PATCH] Adding an error message to indicate perf_event cgroup subsys not mounted. | From | Will Auld <> | Date | Thu, 21 Mar 2013 11:29:20 -0700 |
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Adding an error message to indicate that there is no mounted perf_event cgroup while using -G or --cgroup options with perf.
Signed-off-by: Will Auld <will.auld@intel.com> --- tools/perf/util/cgroup.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/tools/perf/util/cgroup.c b/tools/perf/util/cgroup.c index 96bbda1..4126beb 100644 --- a/tools/perf/util/cgroup.c +++ b/tools/perf/util/cgroup.c @@ -44,8 +44,10 @@ cgroupfs_find_mountpoint(char *buf, size_t maxlen) break; } fclose(fp); - if (!found) + if (!found) { + error("No cgroup mounted with \'perf_event\' type"); return -1; + } if (strlen(mountpoint) < maxlen) { strcpy(buf, mountpoint); -- 1.7.1
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