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From: Peter Zijlstra <peterz@infradead.org>
To: peterz@infradead.org, mingo@kernel.org, will@kernel.org
Cc: oleg@redhat.com, tglx@linutronix.de,
	linux-kernel@vger.kernel.org, bigeasy@linutronix.de,
	juri.lelli@redhat.com, williams@redhat.com, bristot@redhat.com,
	longman@redhat.com, dave@stgolabs.net, jack@suse.com
Subject: [PATCH 0/5] locking: Percpu-rwsem rewrite
Date: Wed, 13 Nov 2019 11:21:15 +0100
Message-ID: <20191113102115.116470462@infradead.org> (raw)

Yet another version of the percpu-rwsem rewrite..

This one (ab)uses the waitqueue in an entirely different and unique way, but no
longer shares it like it did. It retains the use of rcuwait for the
writer-waiting-for-readers-to-complete condition.

This one should be FIFO fair with writer-stealing.

It seems to pass locktorture torture_type=percpu_rwsem_lock. But as always,
this stuff is tricky, please look carefully.


             reply index

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-13 10:21 Peter Zijlstra [this message]
2019-11-13 10:21 ` [PATCH 1/5] locking/percpu-rwsem, lockdep: Make percpu-rwsem use its own lockdep_map Peter Zijlstra
2019-11-15 20:39   ` Davidlohr Bueso
2020-01-08  1:33     ` [PATCH] locking/percpu-rwsem: Add might_sleep() for writer locking Davidlohr Bueso
2020-01-08  1:33       ` Davidlohr Bueso
2019-11-13 10:21 ` [PATCH 2/5] locking/percpu-rwsem: Convert to bool Peter Zijlstra
2019-11-13 10:21 ` [PATCH 3/5] locking/percpu-rwsem: Move __this_cpu_inc() into the slowpath Peter Zijlstra
2019-11-13 10:21 ` [PATCH 4/5] locking/percpu-rwsem: Extract __percpu_down_read_trylock() Peter Zijlstra
2019-11-18 16:28   ` Oleg Nesterov
2019-11-13 10:21 ` [PATCH 5/5] locking/percpu-rwsem: Remove the embedded rwsem Peter Zijlstra
2019-11-18 19:53   ` Davidlohr Bueso
2019-11-18 23:19     ` Davidlohr Bueso
2019-12-17 10:45       ` Peter Zijlstra
2019-12-17 10:35     ` Peter Zijlstra
2019-11-18 21:52   ` Waiman Long
2019-12-17 10:28     ` Peter Zijlstra
2019-11-19 13:50   ` Waiman Long
2019-11-19 15:58     ` Oleg Nesterov
2019-11-19 16:28       ` Waiman Long
2019-12-17 10:26       ` Peter Zijlstra
2019-12-17 10:28         ` Peter Zijlstra
2019-11-15 17:14 ` [PATCH 0/5] locking: Percpu-rwsem rewrite Juri Lelli

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