From: Oleg Nesterov <oleg@redhat.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>,
linux-kernel@vger.kernel.org,
"Eric W. Biederman" <ebiederm@xmission.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 2/2 v2] signal: Don't disable preemption in ptrace_stop() on PREEMPT_RT.
Date: Tue, 6 Jun 2023 15:20:47 +0200 [thread overview]
Message-ID: <20230606132047.GA16159@redhat.com> (raw)
In-Reply-To: <20230606131621.nbXfkFvG@linutronix.de>
On 06/06, Sebastian Andrzej Siewior wrote:
>
> v1…v2:
> - Extend the comment to note that preemption isn't disabled due to
> the lock to make it obvious that the optimisation isn't just
> harmful but also pointless.
Thanks,
Acked-by: Oleg Nesterov <oleg@redhat.com>
prev parent reply other threads:[~2023-06-06 13:22 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-06 8:55 [PATCH REPOST 0/2] signal: Avoid preempt_disable() in ptrace_stop() on PREEMPT_RT Sebastian Andrzej Siewior
2023-06-06 8:55 ` [PATCH REPOST 1/2] signal: Add proper comment about the preempt-disable in ptrace_stop() Sebastian Andrzej Siewior
2023-06-06 11:06 ` Oleg Nesterov
2023-06-06 8:55 ` [PATCH REPOST 2/2] signal: Don't disable preemption in ptrace_stop() on PREEMPT_RT Sebastian Andrzej Siewior
2023-06-06 11:04 ` Oleg Nesterov
2023-06-06 11:14 ` Peter Zijlstra
2023-06-06 11:38 ` Oleg Nesterov
2023-06-06 13:16 ` [PATCH 2/2 v2] " Sebastian Andrzej Siewior
2023-06-06 13:20 ` Oleg Nesterov [this message]
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