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Message-ID: <20160227111719.GV3965@htj.duckdns.org>
Date: Sat, 27 Feb 2016 06:17:19 -0500
From: Tejun Heo <tj@...nel.org>
To: Yang Shi <yang.shi@...aro.org>
Cc: gregkh@...uxfoundation.org, lizefan@...wei.com, tglx@...utronix.de,
rostedt@...dmis.org, bigeasy@...utronix.de,
linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org,
linaro-kernel@...ts.linaro.org
Subject: Re: [RFC V2 PATCH] kernfs: create raw version kernfs_path_len and
kernfs_path
Hello,
On Fri, Feb 26, 2016 at 01:47:39PM -0800, Yang Shi wrote:
> Call synchronize_sched() when kernfs_node is updated since tracepoints are
> protected by rcu_read_lock_sched.
Adding synchronize_sched() to operations which can be triggered from
userland usually turns out to be problematic. If this can't be solved
any other way, I think the right thing to do is replacing the path
with cgroup id as Christoph suggested.
Thanks.
--
tejun
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