Commit c2f29ea1 authored by Benjamin LaHaise's avatar Benjamin LaHaise Committed by Linus Torvalds
Browse files

[PATCH] __read_page_state(): pass unsigned long instead of unsigned



By making the offset argument of __read_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: default avatarBenjamin LaHaise <benjamin.c.lahaise@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 83e5d8f7
......@@ -135,7 +135,7 @@ 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 unsigned long __read_page_state(unsigned long offset);
extern void __mod_page_state(unsigned long offset, unsigned long delta);
#define read_page_state(member) \
......
......@@ -1144,7 +1144,7 @@ void get_full_page_state(struct page_state *ret)
__get_page_state(ret, sizeof(*ret) / sizeof(unsigned long));
}
unsigned long __read_page_state(unsigned offset)
unsigned long __read_page_state(unsigned long offset)
{
unsigned long ret = 0;
int cpu;
......
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