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perf tools: Mount debugfs automatically

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Mount debugfs filesystem under '/sys/kernel/debug', if it's not
mounted.

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <4B387090.7080407@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Xiao Guangrong 2009-12-28 16:47:12 +08:00 • committed by Ingo Molnar
parent 07b139c8c8
commit 29c52aa230
3 changed files with 9 additions and 11 deletions
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2
tools/perf/perf.c
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@ -388,7 +388,7 @@ static int run_argv(int *argcp, const char ***argv)
/* mini /proc/mounts parser: searching for "^blah /mount/point debugfs" */
static void get_debugfs_mntpt(void)
{
const char *path = debugfs_find_mountpoint();
const char *path = debugfs_mount(NULL);
if (path)
strncpy(debugfs_mntpt, path, sizeof(debugfs_mntpt));