linux-kernel - [RFC PATCH 05/12] debugobjects: Mark pool

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Date:   Thu,  8 Nov 2018 15:34:21 -0500
From:   Waiman Long <longman@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Will Deacon <will.deacon@....com>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com,
        linux-mm@...ck.org, Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Tejun Heo <tj@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Waiman Long <longman@...hat.com>
Subject: [RFC PATCH 05/12] debugobjects: Mark pool_lock as a terminal lock

By marking the internal pool_lock as a terminal lock, lockdep will be
able to skip full validation to improve locking performance.

Signed-off-by: Waiman Long <longman@...hat.com>
---
 lib/debugobjects.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index 70935ed..403dd95 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -39,7 +39,7 @@ struct debug_bucket {
 
 static struct debug_obj		obj_static_pool[ODEBUG_POOL_SIZE] __initdata;
 
-static DEFINE_RAW_SPINLOCK(pool_lock);
+static DEFINE_RAW_TERMINAL_SPINLOCK(pool_lock);
 
 static HLIST_HEAD(obj_pool);
 static HLIST_HEAD(obj_to_free);
-- 
1.8.3.1