kernel_optimize_test/arch/x86
Eric Dumazet 67d7178f8f x86: atomic64: Improve atomic64_read()
Optimize atomic64_read() as a special open-coded
cmpxchg8b variant. This generates nicer code:

arch/x86/lib/atomic64_32.o:

   text	   data	    bss	    dec	    hex	filename
    435	      0	      0	    435	    1b3	atomic64_32.o.before
    431	      0	      0	    431	    1af	atomic64_32.o.after

md5:
   bd8ab95e69c93518578bfaf0ea3be4d9  atomic64_32.o.before.asm
   2bdfd4bd1f6b7b61b7fc127aef90ce3b  atomic64_32.o.after.asm

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
LKML-Reference: <alpine.LFD.2.01.0907021653030.3210@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-03 14:42:59 +02:00
..
boot Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-20 10:49:48 -07:00
configs Merge branch 'x86-kbuild-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-10 15:30:41 -07:00
crypto crypto: aes-ni - Remove CRYPTO_TFM_REQ_MAY_SLEEP from fpu template 2009-06-18 19:44:01 +08:00
ia32
include/asm x86: atomic64: Code atomic(64)_read and atomic(64)_set in C not CPP 2009-07-03 14:42:39 +02:00
kernel perf_counter: Ignore the nmi call frames in the x86-64 backtraces 2009-07-01 22:37:23 +02:00
kvm KVM: shut up uninit compiler warning in paging_tmpl.h 2009-06-28 14:10:32 +03:00
lguest lguest: PAE support 2009-06-12 22:27:08 +09:30
lib x86: atomic64: Improve atomic64_read() 2009-07-03 14:42:59 +02:00
math-emu
mm x86: only clear node_states for 64bit 2009-06-30 18:56:01 -07:00
oprofile Merge branch 'linus' into perfcounters/core 2009-06-11 17:55:42 +02:00
pci Revert "PCI: use ACPI _CRS data by default" 2009-06-24 16:23:03 -07:00
power x86, mce: Fix mce resume on 32bit 2009-06-23 13:36:17 -07:00
vdso gcov: enable GCOV_PROFILE_ALL for x86_64 2009-06-18 13:03:58 -07:00
video
xen Merge branch 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-10 16:16:27 -07:00
Kbuild
Kconfig Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-20 10:56:46 -07:00
Kconfig.cpu Revert "x86, bts: reenable ptrace branch trace support" 2009-06-11 00:32:00 +02:00
Kconfig.debug kmemcheck: make kconfig accessible for other architectures 2009-06-15 15:49:17 +02:00
Makefile kmemcheck: add the kmemcheck core 2009-06-13 15:37:30 +02:00
Makefile_32.cpu