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From: Davidlohr Bueso <dave@stgolabs.net>
To: Peter Zijlstra <peterz@infradead.org>
Cc: mingo@kernel.org, will@kernel.org, oleg@redhat.com,
	tglx@linutronix.de, linux-kernel@vger.kernel.org,
	bigeasy@linutronix.de, juri.lelli@redhat.com,
	williams@redhat.com, bristot@redhat.com, longman@redhat.com,
	jack@suse.com
Subject: Re: [PATCH 1/5] locking/percpu-rwsem, lockdep: Make percpu-rwsem use its own lockdep_map
Date: Fri, 15 Nov 2019 12:39:06 -0800	[thread overview]
Message-ID: <20191115203906.fbo6t7d2n6xk3saw@linux-p48b> (raw)
In-Reply-To: <20191113102855.696893455@infradead.org>

On Wed, 13 Nov 2019, Peter Zijlstra wrote:
>@@ -37,7 +48,7 @@ static inline void percpu_down_read(stru
> {
> 	might_sleep();
>
>-	rwsem_acquire_read(&sem->rw_sem.dep_map, 0, 0, _RET_IP_);
>+	rwsem_acquire_read(&sem->dep_map, 0, 0, _RET_IP_);

Unrelated to this patch, but we also need a might_sleep() annotation
in percpu_down_write().

Thanks,
Davidlohr

  reply	other threads:[~2019-11-15 20:43 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-13 10:21 [PATCH 0/5] locking: Percpu-rwsem rewrite Peter Zijlstra
2019-11-13 10:21 ` [PATCH 1/5] locking/percpu-rwsem, lockdep: Make percpu-rwsem use its own lockdep_map Peter Zijlstra
2019-11-15 20:39   ` Davidlohr Bueso [this message]
2020-01-08  1:33     ` [PATCH] locking/percpu-rwsem: Add might_sleep() for writer locking Davidlohr Bueso
2020-01-08  1:33       ` Davidlohr Bueso
2020-02-11 12:48       ` [tip: locking/core] " tip-bot2 for Davidlohr Bueso
2019-11-13 10:21 ` [PATCH 2/5] locking/percpu-rwsem: Convert to bool Peter Zijlstra
2019-11-13 10:21 ` [PATCH 3/5] locking/percpu-rwsem: Move __this_cpu_inc() into the slowpath Peter Zijlstra
2019-11-13 10:21 ` [PATCH 4/5] locking/percpu-rwsem: Extract __percpu_down_read_trylock() Peter Zijlstra
2019-11-18 16:28   ` Oleg Nesterov
2019-11-13 10:21 ` [PATCH 5/5] locking/percpu-rwsem: Remove the embedded rwsem Peter Zijlstra
2019-11-18 19:53   ` Davidlohr Bueso
2019-11-18 23:19     ` Davidlohr Bueso
2019-12-17 10:45       ` Peter Zijlstra
2019-12-17 10:35     ` Peter Zijlstra
2019-11-18 21:52   ` Waiman Long
2019-12-17 10:28     ` Peter Zijlstra
2019-11-19 13:50   ` Waiman Long
2019-11-19 15:58     ` Oleg Nesterov
2019-11-19 16:28       ` Waiman Long
2019-12-17 10:26       ` Peter Zijlstra
2019-12-17 10:28         ` Peter Zijlstra
2019-11-15 17:14 ` [PATCH 0/5] locking: Percpu-rwsem rewrite Juri Lelli

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