diff options
| author |   Masami Hiramatsu <mhiramat@redhat.com> | 2010-04-14 18:39:28 -0400 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-04-14 17:41:06 -0300 |
| commit | 7ca5989dd065cbc48a958666c273794686ea7525 (patch) | |
| tree | be35b0490b63440d0e38e1d3a45b45695e2e0618 /tools/perf/util/probe-event.c | |
| parent | perf probe: Remove xstrdup()/xstrndup() from util/probe-{event, finder}.c (diff) | |
| download | linux-dev-7ca5989dd065cbc48a958666c273794686ea7525.tar.xz linux-dev-7ca5989dd065cbc48a958666c273794686ea7525.zip | |
perf probe: Fix to use correct debugfs path finder
Instead of using debugfs_path, use debugfs_find_mountpoint()
to find actual debugfs path.
LKML-Reference: <20100414223928.14630.38326.stgit@localhost6.localdomain6>
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Reported-by: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/probe-event.c')
| -rw-r--r-- | tools/perf/util/probe-event.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index ca108b2cd15f..1c4a20a284c0 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -42,8 +42,8 @@ #include "color.h" #include "symbol.h" #include "thread.h" +#include "debugfs.h" #include "trace-event.h" /* For __unused */ -#include "parse-events.h" /* For debugfs_path */ #include "probe-event.h" #include "probe-finder.h" @@ -1075,10 +1075,18 @@ void clear_kprobe_trace_event(struct kprobe_trace_event *tev) static int open_kprobe_events(bool readwrite) { char buf[PATH_MAX]; + const char *__debugfs; int ret; - ret = e_snprintf(buf, PATH_MAX, "%s/../kprobe_events", debugfs_path); + __debugfs = debugfs_find_mountpoint(); + if (__debugfs == NULL) { + pr_warning("Debugfs is not mounted.\n"); + return -ENOENT; + } + + ret = e_snprintf(buf, PATH_MAX, "%stracing/kprobe_events", __debugfs); if (ret >= 0) { + pr_debug("Opening %s write=%d\n", buf, readwrite); if (readwrite && !probe_event_dry_run) ret = open(buf, O_RDWR, O_APPEND); else |