From: peterz@infradead.org
To: linux-arch@vger.kernel.org
Cc: geert@linux-m68k.org, paulmck@linux.vnet.ibm.com,
torvalds@linux-foundation.org, VICTORK@il.ibm.com,
oleg@redhat.com, anton@samba.org, benh@kernel.crashing.org,
fweisbec@gmail.com, mathieu.desnoyers@polymtl.ca,
michael@ellerman.id.au, mikey@neuling.org,
linux@arm.linux.org.uk, schwidefsky@de.ibm.com,
heiko.carstens@de.ibm.com, tony.luck@intel.com,
Peter Zijlstra <peterz@infradead.org>
Subject: [PATCH 0/4] arch: Introduce smp_load_acquire() and smp_store_release()
Date: Thu, 07 Nov 2013 23:03:14 +0100 [thread overview]
Message-ID: <20131107220314.740353088@infradead.org> (raw)
*** last posting didn't make it out to the lists ***
These patches introduce 2 new barrier primitives:
smp_load_acquire(p)
smp_store_release(p, v)
See the first patch, which changes Documentation/memory-barriers.txt, to find
the exact definitions of what an ACQUIRE/RELEASE barrier is -- previously known
as LOCK/UNLOCK barriers.
The second patch simplifies the asm/barrier.h implementation of a lot of
architectures by using asm-generic/barrier.h in order to save a lot of code
duplication later on.
The third patch adds the new barrier primitives.
The fourth adds the first user.
Build tested for:
alpha-defconfig - OK
ia64-defconfig - OK
m32r-defconfig - OK
frv-defconfig - OK
m68k-defconfig - OK
mips-defconfig - OK
mips-fuloong2e_defconfig - OK
arm-defconfig - OK
blackfin-defconfig - OK
mn10300-defconfig - OK
powerpc-ppc40x_defconfig - OK
powerpc-defconfig - OK
s390-defconfig - OK
sh-defconfig - OK
sparc-defconfig - OK
sparc64-defconfig - OK
i386-defconfig - OK
x86_64-defconfig - OK
Changes since the last posting that didn't make it out to lkml (and other lists)
due to an excessive Cc list:
- added the fourth patch as a first user
- changed the x86 implementation to not assume a TSO model
when OOSTORE or PPRO_FENCE
---
Documentation/memory-barriers.txt | 164 ++++++++++++++++++----------------
arch/alpha/include/asm/barrier.h | 25 ++----
arch/arc/include/asm/Kbuild | 1 +
arch/arc/include/asm/atomic.h | 5 ++
arch/arc/include/asm/barrier.h | 42 ---------
arch/arm/include/asm/barrier.h | 15 ++++
arch/arm64/include/asm/barrier.h | 50 +++++++++++
arch/avr32/include/asm/barrier.h | 17 ++--
arch/blackfin/include/asm/barrier.h | 18 +---
arch/cris/include/asm/Kbuild | 1 +
arch/cris/include/asm/barrier.h | 25 ------
arch/frv/include/asm/barrier.h | 8 +-
arch/h8300/include/asm/barrier.h | 21 +----
arch/hexagon/include/asm/Kbuild | 1 +
arch/hexagon/include/asm/barrier.h | 41 ---------
arch/ia64/include/asm/barrier.h | 49 ++++++++++
arch/m32r/include/asm/barrier.h | 80 +----------------
arch/m68k/include/asm/barrier.h | 14 +--
arch/metag/include/asm/barrier.h | 15 ++++
arch/microblaze/include/asm/Kbuild | 1 +
arch/microblaze/include/asm/barrier.h | 27 ------
arch/mips/include/asm/barrier.h | 15 ++++
arch/mn10300/include/asm/Kbuild | 1 +
arch/mn10300/include/asm/barrier.h | 37 --------
arch/parisc/include/asm/Kbuild | 1 +
arch/parisc/include/asm/barrier.h | 35 --------
arch/powerpc/include/asm/barrier.h | 21 ++++-
arch/s390/include/asm/barrier.h | 15 ++++
arch/score/include/asm/Kbuild | 1 +
arch/score/include/asm/barrier.h | 16 ----
arch/sh/include/asm/barrier.h | 21 +----
arch/sparc/include/asm/barrier_32.h | 12 +--
arch/sparc/include/asm/barrier_64.h | 15 ++++
arch/tile/include/asm/barrier.h | 68 +-------------
arch/unicore32/include/asm/barrier.h | 11 +--
arch/x86/include/asm/barrier.h | 43 ++++++++-
arch/xtensa/include/asm/barrier.h | 9 +-
include/asm-generic/barrier.h | 55 +++++++++---
include/linux/compiler.h | 9 ++
kernel/events/ring_buffer.c | 62 +++++++------
40 files changed, 444 insertions(+), 623 deletions(-)
next reply other threads:[~2013-11-07 22:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-07 22:03 peterz [this message]
2013-11-07 22:03 ` [PATCH 1/4] doc: Rename LOCK/UNLOCK to ACQUIRE/RELEASE peterz
2013-11-07 20:05 ` Mathieu Desnoyers
2013-11-07 22:03 ` [PATCH 2/4] arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h peterz
2013-11-07 20:22 ` Mathieu Desnoyers
2013-11-07 22:03 ` [PATCH 3/4] arch: Introduce smp_load_acquire(), smp_store_release() peterz
2013-11-07 21:03 ` Mathieu Desnoyers
2013-11-08 4:58 ` Paul Mackerras
2013-11-07 22:03 ` [PATCH 4/4] perf: Optimize perf_output_begin() -- weaker memory barrier peterz
2013-11-07 21:16 ` Mathieu Desnoyers
2013-11-08 2:19 ` Paul E. McKenney
2013-11-08 2:54 ` Mathieu Desnoyers
2013-11-08 3:13 ` Mathieu Desnoyers
2013-11-08 3:25 ` Paul E. McKenney
2013-11-08 7:21 ` Peter Zijlstra
-- strict thread matches above, loose matches on Subject: below --
2013-12-13 14:56 [PATCH 0/4] arch: Introduce smp_load_acquire() and smp_store_release() Peter Zijlstra
2013-12-18 19:08 Peter Zijlstra
2013-12-18 20:55 ` Paul E. McKenney
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