Messages in this thread Patch in this message | | | From | Byungchul Park <> | Subject | [RFC v2 12/13] lockdep: Make crossrelease use save_stack_trace_norm() instead | Date | Thu, 7 Jul 2016 18:30:02 +0900 |
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Currently crossrelease feature uses save_stack_trace() to save backtrace. However it has much overhead. So this patch makes it use save_stack_trace_norm() instead, which has smaller overhead.
Signed-off-by: Byungchul Park <byungchul.park@lge.com> --- kernel/locking/lockdep.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index ea19108..fd7865b 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -4690,7 +4690,7 @@ static void add_plock(struct held_lock *hlock, unsigned int prev_gen_id, plock->trace.max_entries = MAX_PLOCK_TRACE_ENTRIES; plock->trace.entries = plock->trace_entries; plock->trace.skip = 3; - save_stack_trace(&plock->trace); + save_stack_trace_norm(&plock->trace); } } -- 1.9.1
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