linux-kernel - [PATCH v2 0/3] locking/rwsem: Miscellaneous cleanup and fix

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Date:   Tue, 22 Mar 2022 11:20:56 -0400
From:   Waiman Long <longman@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        Boqun Feng <boqun.feng@...il.com>
Cc:     linux-kernel@...r.kernel.org, Waiman Long <longman@...hat.com>
Subject: [PATCH v2 0/3] locking/rwsem: Miscellaneous cleanup and fix

Patch 1 is just a simple cleanup patch. Patches 2 and 3 applies the same
consistent rules to optionally wake up waiters in reader & writers
slowpaths as well as in the out_nolock paths.

Waiman Long (3):
  locking/rwsem: No need to check for handoff bit if wait queue empty
  locking/rwsem: Conditionally wake waiters in reader/writer slowpaths
  locking/rwsem: Always try to wake waiters in out_nolock path

 kernel/locking/rwsem.c | 121 ++++++++++++++++++++++++-----------------
 1 file changed, 70 insertions(+), 51 deletions(-)

-- 
2.27.0