From: Peter Zijlstra <peterz@infradead.org>
To: Bart Van Assche <Bart.VanAssche@wdc.com>
Cc: "tj@kernel.org" <tj@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"jannh@google.com" <jannh@google.com>,
"bcrl@kvack.org" <bcrl@kvack.org>,
"torvalds@linux-foundation.org" <torvalds@linux-foundation.org>,
"kernel-team@fb.com" <kernel-team@fb.com>,
"security@kernel.org" <security@kernel.org>,
"kent.overstreet@gmail.com" <kent.overstreet@gmail.com>,
"viro@zeniv.linux.org.uk" <viro@zeniv.linux.org.uk>,
"axboe@kernel.dk" <axboe@kernel.dk>,
"paulmck@linux.vnet.ibm.com" <paulmck@linux.vnet.ibm.com>
Subject: Re: [PATCH 5/7] block: Remove superflous rcu_read_[un]lock_sched() in blk_queue_enter()
Date: Wed, 14 Mar 2018 21:08:46 +0100 [thread overview]
Message-ID: <20180314200846.GR4064@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <1521057929.3006.31.camel@wdc.com>
On Wed, Mar 14, 2018 at 08:05:30PM +0000, Bart Van Assche wrote:
> Can you clarify this further? From <linux/rcupdate.h>:
>
> static inline void synchronize_rcu(void)
> {
> synchronize_sched();
> }
You'll find that is for !CONFIG_PREEMPT_RCU.
next prev parent reply other threads:[~2018-03-14 20:08 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-06 17:26 [PATCHSET] percpu_ref, RCU: Audit RCU usages in percpu_ref users Tejun Heo
2018-03-06 17:33 ` [PATCH 1/7] fs/aio: Add explicit RCU grace period when freeing kioctx Tejun Heo
2018-03-06 17:33 ` [PATCH 2/7] fs/aio: Use RCU accessors for kioctx_table->table[] Tejun Heo
2018-03-06 17:33 ` [PATCH 3/7] RDMAVT: Fix synchronization around percpu_ref Tejun Heo
2018-03-07 15:39 ` Dennis Dalessandro
2018-03-06 17:33 ` [PATCH 4/7] HMM: Remove superflous RCU protection around radix tree lookup Tejun Heo
2018-03-06 17:59 ` Jerome Glisse
2018-03-06 17:33 ` [PATCH 5/7] block: Remove superflous rcu_read_[un]lock_sched() in blk_queue_enter() Tejun Heo
2018-03-06 17:52 ` Bart Van Assche
2018-03-14 18:46 ` tj
2018-03-14 20:05 ` Bart Van Assche
2018-03-14 20:08 ` Peter Zijlstra [this message]
2018-03-14 20:14 ` Bart Van Assche
2018-03-06 17:33 ` [PATCH 6/7] percpu_ref: Update doc to dissuade users from depending on internal RCU grace periods Tejun Heo
2018-03-06 17:33 ` [PATCH 7/7] RCU, workqueue: Implement rcu_work Tejun Heo
2018-03-06 18:30 ` Linus Torvalds
2018-03-09 15:37 ` Tejun Heo
2018-03-07 2:49 ` Lai Jiangshan
2018-03-07 14:54 ` Paul E. McKenney
2018-03-07 16:23 ` Peter Zijlstra
2018-03-07 17:58 ` Paul E. McKenney
2018-03-08 0:29 ` Lai Jiangshan
2018-03-08 17:28 ` Paul E. McKenney
2018-03-09 16:21 ` Tejun Heo
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