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authorBenjamin LaHaise <bcrl@kvack.org>2005-06-22 04:14:54 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-22 05:46:17 +0400
commit83e5d8f7253cb7b14472385a6d57df1e9f848e8e (patch)
treebafb314103aefbb5699aed2b2b284d8954a888d9
parent1ad539b2bd89bf2e129123eb24d5bcc4484a35de (diff)
downloadlinux-83e5d8f7253cb7b14472385a6d57df1e9f848e8e.tar.xz
[PATCH] __mod_page_state(): pass unsigned long instead of unsigned
By making the offset argument of __mod_page_state an unsigned long instead of unsigned, we can avoid forcing the compiler to sign extend a usually constant argument. This saves 1 instruction on x86-64. Signed-off-by: Benjamin LaHaise <benjamin.c.lahaise@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--include/linux/page-flags.h2
-rw-r--r--mm/page_alloc.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index df313891db10..f2ee9b2332e3 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -136,7 +136,7 @@ struct page_state {
extern void get_page_state(struct page_state *ret);
extern void get_full_page_state(struct page_state *ret);
extern unsigned long __read_page_state(unsigned offset);
-extern void __mod_page_state(unsigned offset, unsigned long delta);
+extern void __mod_page_state(unsigned long offset, unsigned long delta);
#define read_page_state(member) \
__read_page_state(offsetof(struct page_state, member))
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 70f710286ced..c976628f9d95 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1158,7 +1158,7 @@ unsigned long __read_page_state(unsigned offset)
return ret;
}
-void __mod_page_state(unsigned offset, unsigned long delta)
+void __mod_page_state(unsigned long offset, unsigned long delta)
{
unsigned long flags;
void* ptr;