Messages in this thread Patch in this message | | | Date | Tue, 24 Nov 2009 20:36:39 GMT | From | tip-bot for Frederic Weisbecker <> | Subject | [tip:perf/core] perf_events: Fix bad software/trace event recursion counting |
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Commit-ID: fe6126722718e51fba4879517c11ac12d9775bcc Gitweb: http://git.kernel.org/tip/fe6126722718e51fba4879517c11ac12d9775bcc Author: Frederic Weisbecker <fweisbec@gmail.com> AuthorDate: Tue, 24 Nov 2009 20:38:22 +0100 Committer: Ingo Molnar <mingo@elte.hu> CommitDate: Tue, 24 Nov 2009 21:34:00 +0100
perf_events: Fix bad software/trace event recursion counting
Commit 4ed7c92d68a5387ba5f7030dc76eab03558e27f5 (perf_events: Undo some recursion damage) has introduced a bad reference counting of the recursion context. putting the context behaves like getting it, dropping every software/trace events after the first one in a context.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <1259091502-5171-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> --- kernel/perf_event.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/perf_event.c b/kernel/perf_event.c index accfd7b..35df94e 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -3914,7 +3914,7 @@ void perf_swevent_put_recursion_context(int rctx) { struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); barrier(); - cpuctx->recursion[rctx]++; + cpuctx->recursion[rctx]--; put_cpu_var(perf_cpu_context); } EXPORT_SYMBOL_GPL(perf_swevent_put_recursion_context);
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