summaryrefslogtreecommitdiff
path: root/arch/arm/Kconfig
diff options
context:
space:
mode:
authorWill Deacon <will.deacon@arm.com>2013-06-12 15:25:56 +0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2013-06-17 12:27:06 +0400
commit621a0147d5c921f4cc33636ccd0602ad5d7cbfbc (patch)
tree59bbba6a677dc8fa5fc6375ef1f391bad2dd9ed4 /arch/arm/Kconfig
parent2874865c1271cc8e8b663804e5de4bc0c36273e1 (diff)
downloadlinux-621a0147d5c921f4cc33636ccd0602ad5d7cbfbc.tar.xz
ARM: 7757/1: mm: don't flush icache in switch_mm with hardware broadcasting
When scheduling an mm on a CPU where it hasn't previously been used, we flush the icache on that CPU so that any code loaded previously on a different core can be safely executed. For cores with hardware broadcasting of cache maintenance operations, this is clearly unnecessary, since the inner-shareable invalidation in __sync_icache_dcache will affect all CPUs. This patch conditionalises the icache flush in switch_mm based on cache_ops_need_broadcast(). Acked-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: Albin Tonnerre <albin.tonnerre@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig')
0 files changed, 0 insertions, 0 deletions