alistair23-linux/arch
Vineet Gupta 82385732b1 ARC: perf: avoid vmalloc backed mmap
For non-alising Dcache, vmalloc is not needed.

vmalloc triggers additonal D-TLB Misses in the perf interrupt code path
making it slightly inefficient as evident from hackbench runs below.

| [ARCLinux]# perf stat -e dTLB-load-misses --repeat 5 hackbench
| Running with 10*40 (== 400) tasks.
| Time: 35.060
| ...
| Performance counter stats for 'hackbench' (5 runs):

Before:      399235      dTLB-load-misses ( +-  2.08% )
After :      397676      dTLB-load-misses ( +-  2.27% )

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-11-21 15:21:08 -08:00
..
alpha pci-v4.14-fixes-6 2017-10-28 10:53:24 -07:00
arc ARC: perf: avoid vmalloc backed mmap 2017-11-21 15:21:08 -08:00
arm xen: fixes for 4.14-rc7 2017-10-27 20:41:05 -07:00
arm64 Allwinner fixes for 4.14 2017-10-20 22:24:48 +02:00
blackfin
c6x arch: remove unused *_segments() macros/functions 2017-09-22 12:59:52 -10:00
cris
frv arch: remove unused *_segments() macros/functions 2017-09-22 12:59:52 -10:00
h8300
hexagon
ia64
m32r m32r: fix build failure 2017-10-03 17:54:26 -07:00
m68k
metag arch: remove unused *_segments() macros/functions 2017-09-22 12:59:52 -10:00
microblaze arch: change default endian for microblaze 2017-09-25 15:31:26 +02:00
mips MIPS: math-emu: Remove pr_err() calls from fpu_emu() 2017-10-09 16:33:34 +02:00
mn10300 arch: remove unused *_segments() macros/functions 2017-09-22 12:59:52 -10:00
nios2
openrisc
parisc parisc: Fix detection of nonsynchronous cr16 cycle counters 2017-10-19 09:21:24 +02:00
powerpc Merge branch 'kvm-ppc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2017-10-19 14:42:09 +02:00
s390 s390/kvm: fix detection of guest machine checks 2017-10-25 07:59:30 +02:00
score
sh sh: sh7269: remove nonexistent GPIO_PH[0-7] to fix pinctrl registration 2017-10-03 17:54:24 -07:00
sparc Revert commit 1a8b6d76dc ("net:add one common config...") 2017-10-09 07:43:06 -07:00
tile Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile 2017-09-22 13:02:54 -10:00
um um/time: Fixup namespace collision 2017-09-29 10:07:44 +02:00
unicore32
x86 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-10-27 17:19:39 -07:00
xtensa arch: remove unused *_segments() macros/functions 2017-09-22 12:59:52 -10:00
.gitignore
Kconfig Revert commit 1a8b6d76dc ("net:add one common config...") 2017-10-09 07:43:06 -07:00