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Christian Ehrhardt 96567161de [PATCH] s390: Increase spinlock retry code performance ... Currently the code tries up to spin_retry times to grab a lock using the cs instruction. The cs instruction has exclusive access to a memory region and therefore invalidates the appropiate cache line of all other cpus. If there is contention on a lock this leads to cache line trashing. This can be avoided if we first check wether a cs instruction is likely to succeed before the instruction gets actually executed. Signed-off-by: Christian Ehrhardt <ehrhardt@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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appldata	…
boot	…
crypto	…
kernel	[PATCH] flags parameter for linkat	19 years ago
lib	[PATCH] s390: Increase spinlock retry code performance	19 years ago
math-emu	…
mm	…
oprofile	…
Kconfig	[PATCH] Introduce CONFIG_DEFAULT_MIGRATION_COST	19 years ago
Kconfig.debug	…
Makefile	…
defconfig	…