korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-24 20:54:10 +08:00
Code Issues Packages Projects Releases Wiki Activity

ARM: 8777/1: Hook up SYNC_CORE functionality for sys_membarrier()

Browse Source 
Exception return implies context synchronization, so we can hook up the
SYNC_CORE option to sys_membarrier() simply by selecting the Kconfig option,
just like we've done for arm64 already.

Cc: Orion Hodson <oth@google.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Will Deacon 2018-06-26 15:52:38 +01:00 committed by Russell King
parent ce397d215c
commit e69244d295
2 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
Documentation/features/sched/membarrier-sync-core/arch-support.txt
View File

@ -5,10 +5,10 @@
#
# Architecture requirements
#
# * arm64
# * arm/arm64
#
# Rely on eret context synchronization when returning from IPI handler, and
# when returning to user-space.
# Rely on implicit context synchronization as a result of exception return
# when returning from IPI handler, and when returning to user-space.
#
# * x86
#
@ -31,7 +31,7 @@
-----------------------
| alpha: | TODO |
| arc: | TODO |
| arm: | TODO |
| arm: | ok |
| arm64: | ok |
| c6x: | TODO |
| h8300: | TODO |

1
arch/arm/Kconfig
View File

@ -9,6 +9,7 @@ config ARM
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_FORTIFY_SOURCE
select ARCH_HAS_KCOV
select ARCH_HAS_MEMBARRIER_SYNC_CORE
select ARCH_HAS_PTE_SPECIAL if ARM_LPAE
select ARCH_HAS_PHYS_TO_DMA
select ARCH_HAS_SET_MEMORY