From: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
To: linux-arm-kernel@lists.infradead.org
Cc: Arnd Bergmann <arnd@arndb.de>,
Peter Zijlstra <peterz@infradead.org>,
Russell King <linux@armlinux.org.uk>,
Ingo Molnar <mingo@redhat.com>, Waiman Long <longman@redhat.com>,
Will Deacon <will@kernel.org>
Subject: [RFC PATCH 0/6 v2] Queued spinlocks/RW-locks for ARM
Date: Mon, 14 Oct 2019 00:13:04 +0200 [thread overview]
Message-ID: <20191013221310.30748-1-sebastian@breakpoint.cc> (raw)
I added support for queued-RW and -spinlocks for ARM. I followed Arnd's
suggestion and added support for xchg() on 8bit and 16bit variables (V6
CPUs) via the SH implementation. This makes it possible to remove the
current ticket based locking implementation.
The numbers should be the same as in v1 posted here:
http://lkml.kernel.org/r/20191007214439.27891-1-sebastian@breakpoint.cc
The only thing changed is that patch #1-#3 wire up the missing xchg and
the patches #4 and #5 additionally remove the old implementation while
adding the missing bits for the queued implementation.
Sebatian
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next reply other threads:[~2019-10-13 22:13 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-13 22:13 Sebastian Andrzej Siewior [this message]
2019-10-13 22:13 ` [PATCH 1/6] sh: Move cmpxchg-xchg.h to asm-generic Sebastian Andrzej Siewior
2019-10-14 7:25 ` Arnd Bergmann
2019-10-15 22:31 ` [PATCH 1/6 v2] " Sebastian Andrzej Siewior
2019-10-13 22:13 ` [PATCH 2/6] ARM: cmpxchg: Define first cmpxchg() followed by xchg() Sebastian Andrzej Siewior
2019-10-13 22:13 ` [PATCH 3/6] ARM: Add xchg_{8|16}() on generic cmpxchg() on CPU_V6 Sebastian Andrzej Siewior
2019-10-13 22:13 ` [PATCH 4/6] ARM: Use qrwlock implementation Sebastian Andrzej Siewior
2019-10-13 22:13 ` [PATCH 5/6] ARM: Use qspinlock implementation Sebastian Andrzej Siewior
2019-10-13 22:13 ` [PATCH 6/6] ARM: Inline locking functions for !PREEMPTION Sebastian Andrzej Siewior
2019-10-14 7:43 ` Arnd Bergmann
2019-10-14 10:01 ` Arnd Bergmann
2019-10-15 22:30 ` Sebastian Andrzej Siewior
2019-10-15 22:37 ` Waiman Long
2019-10-15 22:47 ` Arnd Bergmann
2019-10-15 22:04 ` Sebastian Andrzej Siewior
2019-10-14 9:00 ` [RFC PATCH 0/6 v2] Queued spinlocks/RW-locks for ARM Arnd Bergmann
2019-10-16 15:57 ` Will Deacon
2019-10-16 17:45 ` Waiman Long
2019-10-16 18:33 ` Arnd Bergmann
2019-10-16 21:35 ` Sebastian Andrzej Siewior
2019-10-16 22:09 ` Sebastian Andrzej Siewior
2019-10-17 15:36 ` Waiman Long
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