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authorWill Deacon <will.deacon@arm.com>2015-05-29 18:28:44 +0100
committerWill Deacon <will.deacon@arm.com>2015-07-27 11:08:40 +0100
commit4b3dc9679cf779339d9049800803dfc3c83433d1 (patch)
tree8c04c26a614240f3142b7afafc071719fc3ea0f5 /arch/arm64/mm/flush.c
parent52da443ec4d0a807b720527eb474f9c2878cd671 (diff)
downloadblackbird-op-linux-4b3dc9679cf779339d9049800803dfc3c83433d1.tar.gz
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arm64: force CONFIG_SMP=y and remove redundant #ifdefs
Nobody seems to be producing !SMP systems anymore, so this is just becoming a source of kernel bugs, particularly if people want to use coherent DMA with non-shared pages. This patch forces CONFIG_SMP=y for arm64, removing a modest amount of code in the process. Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/mm/flush.c')
-rw-r--r--arch/arm64/mm/flush.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/arm64/mm/flush.c b/arch/arm64/mm/flush.c
index 4dfa3975ce5b..c26b804015e8 100644
--- a/arch/arm64/mm/flush.c
+++ b/arch/arm64/mm/flush.c
@@ -60,14 +60,10 @@ void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
unsigned long uaddr, void *dst, const void *src,
unsigned long len)
{
-#ifdef CONFIG_SMP
preempt_disable();
-#endif
memcpy(dst, src, len);
flush_ptrace_access(vma, page, uaddr, dst, len);
-#ifdef CONFIG_SMP
preempt_enable();
-#endif
}
void __sync_icache_dcache(pte_t pte, unsigned long addr)
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