From fe6126722718e51fba4879517c11ac12d9775bcc Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Tue, 24 Nov 2009 20:38:22 +0100 Subject: [PATCH] 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 Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Paul Mackerras Cc: Arjan van de Ven Cc: Li Zefan Cc: Steven Rostedt LKML-Reference: <1259091502-5171-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar --- kernel/perf_event.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/perf_event.c b/kernel/perf_event.c index accfd7bfe387..35df94e344f2 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); -- 2.30.2