From: Waiman Long <Waiman.Long@hp.com>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>, Arnd Bergmann <arnd@arndb.de>
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
Will Deacon <will.deacon@arm.com>,
Scott J Norton <scott.norton@hp.com>,
Douglas Hatch <doug.hatch@hp.com>,
Waiman Long <Waiman.Long@hp.com>
Subject: [PATCH v4 0/2] locking/qrwlock: More optimizations in qrwlock
Date: Wed, 17 Jun 2015 22:20:21 -0400 [thread overview]
Message-ID: <1434594023-43589-1-git-send-email-Waiman.Long@hp.com> (raw)
v3->v4:
- Remove the unnecessary _QW_WMASK check in
queue_read_lock_slowpath().
v2->v3:
- Fix incorrect commit log message in patch 1.
v1->v2:
- Add microbenchmark data for the second patch
This patch set contains 2 patches on qrwlock. The first one is to
optimize the interrupt context reader slowpath. The second one is
to optimize the writer slowpath.
Waiman Long (2):
locking/qrwlock: Better optimization for interrupt context readers
locking/qrwlock: Don't contend with readers when setting _QW_WAITING
include/asm-generic/qrwlock.h | 4 ++--
kernel/locking/qrwlock.c | 41 +++++++++++++++++++++++++++++++----------
2 files changed, 33 insertions(+), 12 deletions(-)
next reply other threads:[~2015-06-18 2:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-18 2:20 Waiman Long [this message]
2015-06-18 2:20 ` [PATCH v4 1/2] locking/qrwlock: Better optimization for interrupt context readers Waiman Long
2015-06-18 12:41 ` Will Deacon
2015-06-18 2:20 ` [PATCH v4 2/2] locking/qrwlock: Don't contend with readers when setting _QW_WAITING Waiman Long
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