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Anton Blanchard b2c0ab17ba [PATCH] ppc64: speedup cmpxchg 
cmpxchg has the following code:

__typeof__(*(ptr)) _o_ = (o);
__typeof__(*(ptr)) _n_ = (n);

Unfortunately it makes gcc 4.0 store and load the variables to the stack.
Eg in atomic_dec_and_test we get:

  stw     r10,112(r1)
  stw     r9,116(r1)
  lwz     r9,112(r1)
  lwz     r0,116(r1)

x86 is just casting the values so do that instead. Also change __xchg*
and __cmpxchg* to take unsigned values, removing a few sign extensions.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-09-06 16:07:53 +10:00
..
acpi /home/lenb/src/to-linus branch 'acpi-2.6.12' 2005-07-29 23:31:17 -04:00
asm-alpha [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
asm-arm Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-09-05 00:17:25 -07:00
asm-arm26 [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
asm-cris [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
asm-frv [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
asm-generic [PATCH] x86: ptep_clear optimization 2005-09-05 00:05:48 -07:00
asm-h8300 [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
asm-i386 [PATCH] UML Support - Ptrace: adds the host SYSEMU support, for UML and general usage 2005-09-05 00:06:20 -07:00
asm-ia64 [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
asm-m32r [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
asm-m68k [PATCH] m68k: cleanup inline mem functions 2005-09-05 00:06:19 -07:00
asm-m68knommu [PATCH] mm: consolidate get_order 2005-09-05 00:05:39 -07:00
asm-mips [PATCH] mips: remove timex.h for vr41xx 2005-09-05 00:06:08 -07:00
asm-parisc [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
asm-powerpc [PATCH] Move all the very similar files to asm-powerpc 2005-08-30 13:32:06 +10:00
asm-ppc [PATCH] ppc64: Add missing include 2005-09-06 16:07:35 +10:00
asm-ppc64 [PATCH] ppc64: speedup cmpxchg 2005-09-06 16:07:53 +10:00
asm-s390 [PATCH] s390: spinlock corner case 2005-09-05 00:06:29 -07:00
asm-sh [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
asm-sh64 [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
asm-sparc Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 2005-09-05 00:12:58 -07:00
asm-sparc64 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 2005-09-05 00:12:58 -07:00
asm-um [PATCH] uml: fix x86_64 page leak 2005-09-05 00:06:24 -07:00
asm-v850 [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
asm-x86_64 [PATCH] i386: cleanup serialize msr 2005-09-05 00:06:11 -07:00
asm-xtensa [PATCH] xtensa: delete accidental file 2005-09-05 00:06:25 -07:00
linux Merge branch 'upstream' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev 2005-09-05 05:50:36 -07:00
math-emu
media [PATCH] V4L: Miscellaneous fixes 2005-08-01 19:13:59 -07:00
mtd
net Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2005-09-05 00:11:50 -07:00
pcmcia
rdma [PATCH] IB: move include files to include/rdma 2005-08-26 20:37:38 -07:00
rxrpc
scsi [SCSI] fix target scanning oops with fc transport class 2005-08-08 17:14:55 -05:00
sound [ALSA] version 1.0.10rc1 2005-08-30 08:48:35 +02:00
video [PATCH] DEC PMAGB B framebuffer update 2005-09-05 00:06:03 -07:00