Messages in this thread Patch in this message | | | Date | Wed, 18 Mar 2009 18:57:28 GMT | From | Ingo Molnar <> | Subject | [tip:tracing/ftrace] tracepoints: dont update zero-sized tracepoint sections |
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Commit-ID: ec625cb29e66824f7ce41082617aeb93fa4e42e2 Gitweb: http://git.kernel.org/tip/ec625cb29e66824f7ce41082617aeb93fa4e42e2 Author: Ingo Molnar <mingo@elte.hu> AuthorDate: Wed, 18 Mar 2009 19:54:04 +0100 Commit: Ingo Molnar <mingo@elte.hu> CommitDate: Wed, 18 Mar 2009 19:55:00 +0100
tracepoints: dont update zero-sized tracepoint sections
Zero-sized tracepoint sections can occur if tracing is enabled but no tracepoint is defined. Do not emit a warning in that case.
Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> LKML-Reference: <1237394936.3132.1.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
--- kernel/tracepoint.c | 4 +--- 1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c index adf2873..1ef5d3a 100644 --- a/kernel/tracepoint.c +++ b/kernel/tracepoint.c @@ -278,10 +278,8 @@ tracepoint_update_probe_range(struct tracepoint *begin, struct tracepoint *end) struct tracepoint *iter; struct tracepoint_entry *mark_entry; - if (!begin) { - WARN_ON_ONCE(1); + if (!begin) return; - } mutex_lock(&tracepoints_mutex); for (iter = begin; iter < end; iter++) {
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