From: Waiman Long <longman@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>, Will Deacon <will.deacon@arm.com>,
Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arch@vger.kernel.org, linux-xtensa@linux-xtensa.org,
Davidlohr Bueso <dave@stgolabs.net>,
linux-ia64@vger.kernel.org, Tim Chen <tim.c.chen@linux.intel.com>,
Arnd Bergmann <arnd@arndb.de>,
linux-sh@vger.kernel.org, linux-hexagon@vger.kernel.org,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Borislav Petkov <bp@alien8.de>,
linux-alpha@vger.kernel.org, sparclinux@vger.kernel.org,
Waiman Long <longman@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/2] locking/rwsem: Remove arch specific rwsem files
Date: Mon, 11 Feb 2019 14:31:24 -0500 [thread overview]
Message-ID: <1549913486-16799-1-git-send-email-longman@redhat.com> (raw)
v2:
- Add patch 2 to optimize __down_read_trylock() as suggested by PeterZ.
- Update performance test data in patch 1.
This is part 0 of my rwsem patchset. It just removes the architecture
specific files to make it easer to add enhancements in the upcoming
rwsem patches.
Since the two ll/sc platforms that I can tested on (arm64 & ppc) are
both using the generic C codes, the rwsem performance shouldn't be
affected by this patch except the down_read_trylock() code which was
included in patch 2 for arm64.
Waiman Long (2):
locking/rwsem: Remove arch specific rwsem files
locking/rwsem: Optimize down_read_trylock()
MAINTAINERS | 1 -
arch/alpha/include/asm/rwsem.h | 211 -----------------------------------
arch/arm/include/asm/Kbuild | 1 -
arch/arm64/include/asm/Kbuild | 1 -
arch/hexagon/include/asm/Kbuild | 1 -
arch/ia64/include/asm/rwsem.h | 172 -----------------------------
arch/powerpc/include/asm/Kbuild | 1 -
arch/s390/include/asm/Kbuild | 1 -
arch/sh/include/asm/Kbuild | 1 -
arch/sparc/include/asm/Kbuild | 1 -
arch/x86/include/asm/rwsem.h | 237 ----------------------------------------
arch/x86/lib/Makefile | 1 -
arch/x86/lib/rwsem.S | 156 --------------------------
arch/xtensa/include/asm/Kbuild | 1 -
include/asm-generic/rwsem.h | 140 ------------------------
include/linux/rwsem.h | 4 +-
kernel/locking/percpu-rwsem.c | 2 +
kernel/locking/rwsem.h | 130 ++++++++++++++++++++++
18 files changed, 133 insertions(+), 929 deletions(-)
delete mode 100644 arch/alpha/include/asm/rwsem.h
delete mode 100644 arch/ia64/include/asm/rwsem.h
delete mode 100644 arch/x86/include/asm/rwsem.h
delete mode 100644 arch/x86/lib/rwsem.S
delete mode 100644 include/asm-generic/rwsem.h
--
1.8.3.1
next reply other threads:[~2019-02-11 19:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-11 19:31 Waiman Long [this message]
2019-02-11 19:31 ` [PATCH v2 1/2] locking/rwsem: Remove arch specific rwsem files Waiman Long
2019-02-11 19:31 ` [PATCH v2 2/2] locking/rwsem: Optimize down_read_trylock() Waiman Long
2019-02-12 13:24 ` Peter Zijlstra
2019-02-12 13:25 ` Peter Zijlstra
2019-02-12 18:36 ` Waiman Long
2019-02-12 18:38 ` Waiman Long
2019-02-12 19:58 ` Linus Torvalds
2019-02-12 21:21 ` Waiman Long
2019-02-13 7:45 ` Ingo Molnar
2019-02-13 15:33 ` Waiman Long
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