From fccc714b3148ab9741fafc1e90c3876d50df6093 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Sat, 23 May 2009 18:28:56 +0200 Subject: perf_counter: Sanitize counter->mutex s/counter->mutex/counter->child_mutex/ and make sure its only used to protect child_list. The usage in __perf_counter_exit_task() doesn't appear to be problematic since ctx->mutex also covers anything related to fd tear-down. Signed-off-by: Peter Zijlstra Cc: Paul Mackerras Cc: Corey Ashford Cc: Arnaldo Carvalho de Melo Cc: John Kacur LKML-Reference: <20090523163012.533186528@chello.nl> Signed-off-by: Ingo Molnar --- include/linux/perf_counter.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index 23ddd29730f8..4ab8050eb9e8 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -452,9 +452,6 @@ struct perf_counter { struct perf_counter_context *ctx; struct file *filp; - struct perf_counter *parent; - struct list_head child_list; - /* * These accumulate total time (in nanoseconds) that children * counters have been enabled and running, respectively. @@ -465,7 +462,9 @@ struct perf_counter { /* * Protect attach/detach and child_list: */ - struct mutex mutex; + struct mutex child_mutex; + struct list_head child_list; + struct perf_counter *parent; int oncpu; int cpu; -- cgit v1.2.3