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authorChristoph Lameter <clameter@sgi.com>2008-02-05 09:29:11 +0300
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-05 20:44:17 +0300
commit9f8f2172537de7af0b0fbd33502d18d52b1339bc (patch)
tree273c86583ed0295059c5526d3bd6927520a20add /include/linux/gfp.h
parente2848a0efedef4dad52d1334d37f8719cd6268fd (diff)
downloadlinux-9f8f2172537de7af0b0fbd33502d18d52b1339bc.tar.xz
Page allocator: clean up pcp draining functions
- Add comments explaing how drain_pages() works. - Eliminate useless functions - Rename drain_all_local_pages to drain_all_pages(). It does drain all pages not only those of the local processor. - Eliminate useless interrupt off / on sequences. drain_pages() disables interrupts on its own. The execution thread is pinned to processor by the caller. So there is no need to disable interrupts. - Put drain_all_pages() declaration in gfp.h and remove the declarations from suspend.h and from mm/memory_hotplug.c - Make software suspend call drain_all_pages(). The draining of processor local pages is may not the right approach if software suspend wants to support SMP. If they call drain_all_pages then we can make drain_pages() static. [akpm@linux-foundation.org: fix build] Signed-off-by: Christoph Lameter <clameter@sgi.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/gfp.h')
-rw-r--r--include/linux/gfp.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 7e93a9ae7064..0c6ce515185d 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -228,5 +228,7 @@ extern void FASTCALL(free_cold_page(struct page *page));
void page_alloc_init(void);
void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp);
+void drain_all_pages(void);
+void drain_local_pages(void *dummy);
#endif /* __LINUX_GFP_H */