From: Peter Zijlstra <peterz@infradead.org>
To: Waiman Long <llong@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
Boqun Feng <boqun.feng@gmail.com>,
linux-kernel@vger.kernel.org, "Xu,
Yanfei" <yanfei.xu@windriver.com>
Subject: Re: [PATCH] locking/mutex: Reduce chance of setting HANDOFF bit on unlocked mutex
Date: Wed, 30 Jun 2021 16:46:39 +0200 [thread overview]
Message-ID: <YNyDz3F3w2EFZfQs@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <139a3dc2-1693-5e33-3d2d-77a5651d92e1@redhat.com>
On Wed, Jun 30, 2021 at 10:13:06AM -0400, Waiman Long wrote:
> Sorry, I missed the XXX comment:-)
>
> This is a generic problem as other waiters that go into the spinning loop
> also don't check for sigpending. On the other hand, I am fine with doing the
> pending signal check before doing the optimistic spinning.
True.. OK, lemme write changelogs for the 4 patches I've ended up with
and post them. Then we can look at that whole sigpending crud.
next prev parent reply other threads:[~2021-06-30 14:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-29 20:11 [PATCH] locking/mutex: Reduce chance of setting HANDOFF bit on unlocked mutex Waiman Long
2021-06-30 10:21 ` Peter Zijlstra
2021-06-30 13:50 ` Waiman Long
2021-06-30 13:56 ` Peter Zijlstra
2021-06-30 14:13 ` Waiman Long
2021-06-30 14:46 ` Peter Zijlstra [this message]
2021-06-30 14:43 ` Xu, Yanfei
2021-06-30 14:50 ` Peter Zijlstra
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