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authorMax Filippov <jcmvbkbc@gmail.com>2014-02-14 14:08:48 +0400
committerMax Filippov <jcmvbkbc@gmail.com>2014-04-06 21:29:17 +0400
commit04c6b3e2b5e5c1dbd99ad7620033eafd05ff4c26 (patch)
treea6f93ad79be6262819a5bc6b73f2646c4f4985dd /arch/xtensa/include/asm/tlbflush.h
parent8585b316bbed9339412d267c1fd8839dd059d69f (diff)
xtensa: optimize local_flush_tlb_kernel_range
Don't flush whole TLB if only a small kernel range is requested. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa/include/asm/tlbflush.h')
-rw-r--r--arch/xtensa/include/asm/tlbflush.h11
1 files changed, 4 insertions, 7 deletions
diff --git a/arch/xtensa/include/asm/tlbflush.h b/arch/xtensa/include/asm/tlbflush.h
index fc34274ce41b..06875feb27c2 100644
--- a/arch/xtensa/include/asm/tlbflush.h
+++ b/arch/xtensa/include/asm/tlbflush.h
@@ -36,6 +36,7 @@ void local_flush_tlb_page(struct vm_area_struct *vma,
unsigned long page);
void local_flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end);
+void local_flush_tlb_kernel_range(unsigned long start, unsigned long end);
#ifdef CONFIG_SMP
@@ -44,12 +45,7 @@ void flush_tlb_mm(struct mm_struct *);
void flush_tlb_page(struct vm_area_struct *, unsigned long);
void flush_tlb_range(struct vm_area_struct *, unsigned long,
unsigned long);
-
-static inline void flush_tlb_kernel_range(unsigned long start,
- unsigned long end)
-{
- flush_tlb_all();
-}
+void flush_tlb_kernel_range(unsigned long start, unsigned long end);
#else /* !CONFIG_SMP */
@@ -58,7 +54,8 @@ static inline void flush_tlb_kernel_range(unsigned long start,
#define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page)
#define flush_tlb_range(vma, vmaddr, end) local_flush_tlb_range(vma, vmaddr, \
end)
-#define flush_tlb_kernel_range(start, end) local_flush_tlb_all()
+#define flush_tlb_kernel_range(start, end) local_flush_tlb_kernel_range(start, \
+ end)
#endif /* CONFIG_SMP */