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authorDavid S. Miller <davem@sunset.davemloft.net>2006-03-18 23:55:11 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-20 01:16:41 -0800
commitbb8646d8340fa7c1b66a037428e39f85f8738f0a (patch)
tree931d4505a0ba65124b662f0f8b5935e0b154bd66 /include
parent88d7079458f87d6f2d2261b2f87b7b9416019f5e (diff)
downloadop-kernel-dev-bb8646d8340fa7c1b66a037428e39f85f8738f0a.zip
op-kernel-dev-bb8646d8340fa7c1b66a037428e39f85f8738f0a.tar.gz
[SPARC64]: Optimized TSB table initialization.
We only need to write an invalid tag every 16 bytes, so taking advantage of this can save many instructions compared to the simple memset() call we make now. A prefetching implementation is implemented for sun4u and a block-init store version if implemented for Niagara. The next trick is to be able to perform an init and a copy_tsb() in parallel when growing a TSB table. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/asm-sparc64/mmu.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-sparc64/mmu.h b/include/asm-sparc64/mmu.h
index da14a9b..230ba67 100644
--- a/include/asm-sparc64/mmu.h
+++ b/include/asm-sparc64/mmu.h
@@ -88,6 +88,7 @@ struct tsb {
extern void __tsb_insert(unsigned long ent, unsigned long tag, unsigned long pte);
extern void tsb_flush(unsigned long ent, unsigned long tag);
+extern void tsb_init(struct tsb *tsb, unsigned long size);
typedef struct {
spinlock_t lock;
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