Manfred Spraul d12e1e50e4 ipc/sem.c: replace shared sem_otime with per-semaphore value ... sem_otime contains the time of the last semaphore operation that completed successfully. Every operation updates this value, thus access from multiple cpus can cause thrashing. Therefore the patch replaces the variable with a per-semaphore variable. The per-array sem_otime is only calculated when required. No performance improvement on a single-socket i3 - only important for larger systems. Signed-off-by: Manfred Spraul <manfred@colorfullife.com> Cc: Rik van Riel <riel@redhat.com> Cc: Davidlohr Bueso <davidlohr.bueso@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-07-09 10:33:28 -07:00
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acpi
asm-generic	Merge branch 'cpuinit-delete' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2013-07-07 11:01:19 -07:00
clocksource
crypto
drm
dt-bindings
keys
kvm
linux	ipc/sem.c: replace shared sem_otime with per-semaphore value	2013-07-09 10:33:28 -07:00
math-emu
media
memory
misc
net
pcmcia
ras
rdma
rxrpc
scsi
sound
target
trace
uapi	fatfs: add FAT_IOCTL_GET_VOLUME_ID	2013-07-09 10:33:25 -07:00
video
xen
Kbuild