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| author | Alexander Z Lam <azl@google.com> | 2013-07-10 17:34:34 -0700 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2013-07-18 21:31:30 -0400 |
| commit | 609e85a70bcd0eedf4ec60639dbcfb1ab011e054 (patch) | |
| tree | 2d977d898d4c781198935482659dd0174e0b9218 /kernel | |
| parent | a232e270dcb55a70ad3241bc6fc160fd9b5c9e6c (diff) | |
| download | blackbird-op-linux-609e85a70bcd0eedf4ec60639dbcfb1ab011e054.tar.gz blackbird-op-linux-609e85a70bcd0eedf4ec60639dbcfb1ab011e054.zip | |
tracing: Fix error handling to ensure instances can always be removed
Remove debugfs directories for tracing instances during creation if an error
occurs causing the trace_array for that instance to not be added to
ftrace_trace_arrays. If the directory continues to exist after the error, it
cannot be removed because the respective trace_array is not in
ftrace_trace_arrays.
Link: http://lkml.kernel.org/r/1373502874-1706-2-git-send-email-azl@google.com
Cc: stable@vger.kernel.org # 3.10
Cc: Vaibhav Nagarnaik <vnagarnaik@google.com>
Cc: David Sharp <dhsharp@google.com>
Cc: Alexander Z Lam <lambchop468@gmail.com>
Signed-off-by: Alexander Z Lam <azl@google.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 25b91afc29e0..7c3da7bca05b 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -5973,8 +5973,10 @@ static int new_instance_create(const char *name) goto out_free_tr; ret = event_trace_add_tracer(tr->dir, tr); - if (ret) + if (ret) { + debugfs_remove_recursive(tr->dir); goto out_free_tr; + } init_tracer_debugfs(tr, tr->dir); |
