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authorDavid S. Miller <davem@sunset.davemloft.net>2006-03-19 02:55:11 -0500
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-20 04:16:41 -0500
commitbb8646d8340fa7c1b66a037428e39f85f8738f0a (patch)
tree931d4505a0ba65124b662f0f8b5935e0b154bd66 /arch/sparc64/lib/NGbzero.S
parent88d7079458f87d6f2d2261b2f87b7b9416019f5e (diff)
[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 'arch/sparc64/lib/NGbzero.S')
-rw-r--r--arch/sparc64/lib/NGbzero.S1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/sparc64/lib/NGbzero.S b/arch/sparc64/lib/NGbzero.S
index fef584f745dc..e86baece5cc8 100644
--- a/arch/sparc64/lib/NGbzero.S
+++ b/arch/sparc64/lib/NGbzero.S
@@ -157,6 +157,7 @@ niagara_patch_bzero:
157 NG_DO_PATCH(memset, NGmemset) 157 NG_DO_PATCH(memset, NGmemset)
158 NG_DO_PATCH(__bzero, NGbzero) 158 NG_DO_PATCH(__bzero, NGbzero)
159 NG_DO_PATCH(__clear_user, NGclear_user) 159 NG_DO_PATCH(__clear_user, NGclear_user)
160 NG_DO_PATCH(tsb_init, NGtsb_init)
160 retl 161 retl
161 nop 162 nop
162 .size niagara_patch_bzero,.-niagara_patch_bzero 163 .size niagara_patch_bzero,.-niagara_patch_bzero