From mboxrd@z Thu Jan 1 00:00:00 1970 From: Waiman Long Subject: [PATCH v2 13/17] mm/kasan: Make quarantine_lock a terminal lock Date: Mon, 19 Nov 2018 13:55:22 -0500 Message-ID: <1542653726-5655-14-git-send-email-longman@redhat.com> References: <1542653726-5655-1-git-send-email-longman@redhat.com> Return-path: In-Reply-To: <1542653726-5655-1-git-send-email-longman@redhat.com> Sender: linux-kernel-owner@vger.kernel.org To: Peter Zijlstra , Ingo Molnar , Will Deacon , Thomas Gleixner Cc: linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Petr Mladek , Sergey Senozhatsky , Andrey Ryabinin , Tejun Heo , Andrew Morton , Waiman Long List-Id: iommu@lists.linux-foundation.org By making quarantine_lock a terminal spinlock, it reduces the lockdep overhead when this lock is being used. Signed-off-by: Waiman Long --- mm/kasan/quarantine.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/kasan/quarantine.c b/mm/kasan/quarantine.c index b209dba..c9d36ab 100644 --- a/mm/kasan/quarantine.c +++ b/mm/kasan/quarantine.c @@ -103,7 +103,7 @@ static void qlist_move_all(struct qlist_head *from, struct qlist_head *to) static int quarantine_tail; /* Total size of all objects in global_quarantine across all batches. */ static unsigned long quarantine_size; -static DEFINE_RAW_SPINLOCK(quarantine_lock); +static DEFINE_RAW_TERMINAL_SPINLOCK(quarantine_lock); DEFINE_STATIC_SRCU(remove_cache_srcu); /* Maximum size of the global queue. */ -- 1.8.3.1