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Date: Tue, 6 Dec 2011 11:29:33 +0800 From: Yong Zhang <yong.zhang0@...il.com> To: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> Cc: linux-kernel@...r.kernel.org, mingo@...e.hu, laijs@...fujitsu.com, dipankar@...ibm.com, akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca, josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu, dhowells@...hat.com, eric.dumazet@...il.com, darren@...art.com, patches@...aro.org Subject: [PATCH 3/3] rcu: use rt_mutex_lock_irqdisabled() in rcu_boost() Otherwise we will get false positive warning from might_sleep() Signed-off-by: Yong Zhang <yong.zhang0@...il.com> --- kernel/rcutree_plugin.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h index 2020e8a..489b1cd 100644 --- a/kernel/rcutree_plugin.h +++ b/kernel/rcutree_plugin.h @@ -1237,7 +1237,7 @@ static int rcu_boost(struct rcu_node *rnp) "rcu_boost_mutex"); t->rcu_boost_mutex = &mtx; raw_spin_unlock(&rnp->lock); /* rrupts remain disabled. */ - rt_mutex_lock(&mtx); /* Side effect: boosts task t's priority. */ + rt_mutex_lock_irqdisabled(&mtx); /* Side effect: boosts task t's priority. */ rt_mutex_unlock(&mtx); /* Keep lockdep happy. */ local_irq_restore(flags); -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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