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linux/include
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Peter Zijlstra 35af99e646 sched/clock, x86: Use a static_key for sched_clock_stable 
In order to avoid the runtime condition and variable load turn
sched_clock_stable into a static_key.

Also provide a shorter implementation of local_clock() and
cpu_clock(int) when sched_clock_stable==1.

                        MAINLINE   PRE       POST

    sched_clock_stable: 1          1         1
    (cold) sched_clock: 329841     221876    215295
    (cold) local_clock: 301773     234692    220773
    (warm) sched_clock: 38375      25602     25659
    (warm) local_clock: 100371     33265     27242
    (warm) rdtsc:       27340      24214     24208
    sched_clock_stable: 0          0         0
    (cold) sched_clock: 382634     235941    237019
    (cold) local_clock: 396890     297017    294819
    (warm) sched_clock: 38194      25233     25609
    (warm) local_clock: 143452     71234     71232
    (warm) rdtsc:       27345      24245     24243

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/n/tip-eummbdechzz37mwmpags1gjr@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-01-13 15:13:13 +01:00
..
acpi Merge branches 'acpi-pci-pm' and 'acpi-pci-hotplug' 2013-12-31 22:03:37 +01:00
asm-generic mm: Fix NULL pointer dereference in madvise(MADV_WILLNEED) support 2013-12-20 12:17:03 -08:00
clocksource
crypto crypto: scatterwalk - Use sg_chain_ptr on chain entries 2013-12-09 19:58:52 +08:00
drm drm/radeon: 0x9649 is SUMO2 not SUMO 2013-12-23 10:03:41 -05:00
dt-bindings For the 3.13 merge window we have a couple of new drivers for the AMS 2013-11-15 16:37:40 -08:00
keys
kvm
linux sched/clock, x86: Use a static_key for sched_clock_stable 2014-01-13 15:13:13 +01:00
math-emu
media [media] videobuf2: Add support for file access mode flags for DMABUF exporting 2013-12-09 14:50:50 -02:00
memory
misc
net sctp: Remove outqueue empty state 2014-01-02 17:22:48 -05:00
pcmcia
ras
rdma IB/core: const'ify inbuf in struct ib_udata 2013-12-16 10:38:28 -08:00
rxrpc
scsi [SCSI] Disable WRITE SAME for RAID and virtual host adapter drivers 2013-11-29 08:48:39 +04:00
sound ALSA: memalloc.h - fix wrong truncation of dma_addr_t 2013-12-10 15:30:46 +01:00
target target/file: Update hw_max_sectors based on current block_size 2013-12-19 00:18:54 -08:00
trace Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-12-02 10:13:09 -08:00
uapi sched/deadline: Add SCHED_DEADLINE structures & implementation 2014-01-13 13:41:06 +01:00
video fbdev changes for 3.13 2013-11-14 14:44:20 +09:00
xen Bug-fixes: 2013-12-20 09:34:54 -08:00
Kbuild