leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
e4c0fc5f72
linux/arch
History
Nicholas Piggin e4c0fc5f72 powerpc/64s: Leave interrupts hard enabled in context switch for radix 
Commit 4387e9ff25 ("[POWERPC] Fix PMU + soft interrupt disable bug")
hard disabled interrupts over the low level context switch, because
the SLB management can't cope with a PMU interrupt accesing the stack
in that window.

Radix based kernel mapping does not use the SLB so it does not require
interrupts hard disabled here.

This is worth 1-2% in context switch performance on POWER9.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-06-15 16:34:39 +10:00
..
alpha osf_wait4(): fix infoleak 2017-05-21 13:10:07 -04:00
arc Kbuild UAPI header export updates for v4.12 2017-05-10 20:45:36 -07:00
arm KVM fixes for v4.12-rc2 2017-05-19 15:13:13 -07:00
arm64 arm64: dts: hikey: Fix WiFi support 2017-05-23 14:18:10 +02:00
blackfin uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
c6x uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
cris devicetree: Move include prefixes from arch to separate directory 2017-05-18 23:55:48 -07:00
frv Kbuild UAPI header export updates for v4.12 2017-05-10 20:45:36 -07:00
h8300 uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
hexagon uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
ia64 Kbuild UAPI header export updates for v4.12 2017-05-10 20:45:36 -07:00
m32r uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
m68k uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
metag devicetree: Move include prefixes from arch to separate directory 2017-05-18 23:55:48 -07:00
microblaze uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
mips devicetree: Move include prefixes from arch to separate directory 2017-05-18 23:55:48 -07:00
mn10300 uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
nios2 nios2 update for v4.12-rc1 2017-05-12 09:53:16 -07:00
openrisc uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
parisc uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
powerpc powerpc/64s: Leave interrupts hard enabled in context switch for radix 2017-06-15 16:34:39 +10:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-05-16 09:24:44 -07:00
score uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
sh Kbuild UAPI header export updates for v4.12 2017-05-10 20:45:36 -07:00
sparc sparc/ftrace: Fix ftrace graph time measurement 2017-05-17 12:07:47 -07:00
tile arch/include: remove empty Kbuild files 2017-05-11 00:22:18 +09:00
um Merge branch 'for-linus-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml 2017-05-13 10:20:02 -07:00
unicore32 Kbuild UAPI header export updates for v4.12 2017-05-10 20:45:36 -07:00
x86 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-05-27 09:17:58 -07:00
xtensa uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
.gitignore
Kconfig Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-05-10 10:30:46 -07:00