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[S390] atomic ops: add effecient atomic64 support for 31 bit
authorHeiko Carstens <heiko.carstens@de.ibm.com>
Fri, 11 Sep 2009 08:28:34 +0000 (10:28 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Fri, 11 Sep 2009 08:29:43 +0000 (10:29 +0200)
commit12751058515860ed43c8f874ebcb2097b323736a
tree491ec6fe0b0f16da7f05f4edc924ba9a60986588tree | snapshot (tar.gz zip)
parent6ac2a4ddd10d6916785b4c566d521025c855f823commit | diff
[S390] atomic ops: add effecient atomic64 support for 31 bit

Use compare double and swap to implement efficient atomic64 ops for 31 bit.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/Kconfig diff | blob | blame | history
arch/s390/include/asm/atomic.h diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)