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| author |   Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2009-12-28 16:48:30 +0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-12-28 10:36:36 +0100 |
| commit | 61be3e59ba7a6dbd39f92fd1f107285a0caeb008 (patch) | |
| tree | abccb9ea4c97ff2ea32a32337d172cb0b41e2ade /tools/perf/util/trace-event-info.c | |
| parent | perf tools: Mount debugfs automatically (diff) | |
| download | linux-dev-61be3e59ba7a6dbd39f92fd1f107285a0caeb008.tar.xz linux-dev-61be3e59ba7a6dbd39f92fd1f107285a0caeb008.zip | |
perf trace: Clean up find_debugfs()
Remove redundant code for 'perf trace'
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: <4B3870DE.7090500@cn.fujitsu.com>
[ v2: resolved conflicts with recent changes ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/trace-event-info.c')
| -rw-r--r-- | tools/perf/util/trace-event-info.c | 29 |
1 files changed, 5 insertions, 24 deletions
diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c index dfef238ce158..535176dc95b6 100644 --- a/tools/perf/util/trace-event-info.c +++ b/tools/perf/util/trace-event-info.c @@ -38,6 +38,7 @@ #include "../perf.h" #include "trace-event.h" +#include "debugfs.h" #define VERSION "0.5" @@ -102,32 +103,12 @@ void *malloc_or_die(unsigned int size) static const char *find_debugfs(void) { - static char debugfs[MAX_PATH+1]; - static int debugfs_found; - FILE *fp; - struct mntent *m; - - if (debugfs_found) - return debugfs; - - fp = setmntent("/proc/mounts", "r"); - if (!fp) - die("Can't open /proc/mounts for read"); - - while ((m = getmntent(fp)) != NULL) { - if (strcmp(m->mnt_type, "debugfs") == 0) { - strcpy(debugfs, m->mnt_dir); - debugfs_found = 1; - break; - } - } - - endmntent(fp); + const char *path = debugfs_mount(NULL); - if (!debugfs_found) - die("debugfs not mounted, please mount"); + if (!path) + die("Your kernel not support debugfs filesystem"); - return debugfs; + return path; } /* |