diff options
| author | Christoph Lameter <clameter@sgi.com> | 2008-02-05 07:29:11 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-05 18:44:17 +0100 |
| commit | 9f8f2172537de7af0b0fbd33502d18d52b1339bc (patch) | |
| tree | 273c86583ed0295059c5526d3bd6927520a20add /include | |
| parent | radix-tree: avoid atomic allocations for preloaded insertions (diff) | |
| download | linux-9f8f2172537de7af0b0fbd33502d18d52b1339bc.tar.xz linux-9f8f2172537de7af0b0fbd33502d18d52b1339bc.zip | |
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')
| -rw-r--r-- | include/linux/gfp.h | 2 | ||||
| -rw-r--r-- | include/linux/suspend.h | 1 |
2 files changed, 2 insertions, 1 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 */ diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 646ce2d068d4..1d7d4c5797ee 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -130,7 +130,6 @@ struct pbe { }; /* mm/page_alloc.c */ -extern void drain_local_pages(void); extern void mark_free_pages(struct zone *zone); /** |