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From: Davidlohr Bueso <dave@stgolabs.net>
To: tglx@linutronix.de
Cc: peterz@infradead.org, mingo@kernel.org, rostedt@goodmis.org,
	longman@redhat.com, bigeasy@linutronix.de, boqun.feng@gmail.com,
	dave@stgolabs.net, linux-kernel@vger.kernel.org
Subject: [PATCH -tip 0/2] locking/rwbase: Two reader optimizations
Date: Sun, 19 Sep 2021 22:20:29 -0700	[thread overview]
Message-ID: <20210920052031.54220-1-dave@stgolabs.net> (raw)

Hi,

Patch 1 is a barrier optimization that came up from the reader
fastpath ordering auditing.

Patch 2 is a resend of the previous broken patch that attempts
to use wake_q for read_unlock() slowpath.

Tested on v5.15.y-rt. Applies against tip/urgent.

Thanks!

Davidlohr Bueso (2):
  locking/rwbase: Optimize rwbase_read_trylock
  locking/rwbase: Lockless reader waking up a writer

 kernel/locking/rtmutex.c   | 19 +++++++++++++------
 kernel/locking/rwbase_rt.c | 11 +++++++----
 2 files changed, 20 insertions(+), 10 deletions(-)

--
2.26.2


             reply	other threads:[~2021-09-20  5:21 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-20  5:20 Davidlohr Bueso [this message]
2021-09-20  5:20 ` [PATCH 1/2] locking/rwbase: Optimize rwbase_read_trylock Davidlohr Bueso
2021-10-09 10:07   ` [tip: locking/core] " tip-bot2 for Davidlohr Bueso
2021-09-20  5:20 ` [PATCH 2/2] locking/rwbase: Lockless reader waking up a writer Davidlohr Bueso
2021-09-20 21:54 ` [PATCH -tip 0/2] locking/rwbase: Two reader optimizations Waiman Long

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