[PATCH] Directed yield: direct yield of spinlocks for powerpc
commitcdc39363d33506b0e067d41fc91f89d186bdf7f7
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Sun, 1 Oct 2006 06:27:44 +0000 (30 23:27 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Sun, 1 Oct 2006 07:39:22 +0000 (1 00:39 -0700)
treeabbc303abbccd730b56c35bd021f8ff57e4f5929
parentef6edc9746dc2bfdacf44eefd5f881179971c478
[PATCH] Directed yield: direct yield of spinlocks for powerpc

Powerpc already has a directed yield for CONFIG_PREEMPT="n".  To make it
work with CONFIG_PREEMPT="y" as well the _raw_{spin,read,write}_relax
primitives need to be defined to call __spin_yield() for spinlocks and
__rw_yield() for rw-locks.

Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
include/asm-powerpc/spinlock.h