diff options
| author | Andrew Morton <akpm@osdl.org> | 2006-09-26 08:32:44 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-26 17:48:58 +0200 |
| commit | 546e0d271941dd1ff6961e2a1f7eac75f1fc277e (patch) | |
| tree | 60c74a9598f7cb4622c1b6acd25df5df67284353 /kernel/power/power.h | |
| parent | [PATCH] swsusp: add read-speed instrumentation (diff) | |
| download | linux-546e0d271941dd1ff6961e2a1f7eac75f1fc277e.tar.xz linux-546e0d271941dd1ff6961e2a1f7eac75f1fc277e.zip | |
[PATCH] swsusp: read speedup
Implement async reads for swsusp resuming.
Crufty old PIII testbox:
15.7 MB/s -> 20.3 MB/s
Sony Vaio:
14.6 MB/s -> 33.3 MB/s
I didn't implement the post-resume bio_set_pages_dirty(). I don't really
understand why resume needs to run set_page_dirty() against these pages.
It might be a worry that this code modifies PG_Uptodate, PG_Error and
PG_Locked against the image pages. Can this possibly affect the resumed-into
kernel? Hopefully not, if we're atomically restoring its mem_map?
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Jens Axboe <axboe@suse.de>
Cc: Laurent Riffard <laurent.riffard@free.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/power/power.h')
| -rw-r--r-- | kernel/power/power.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/power/power.h b/kernel/power/power.h index 57a792982fb9..59ce712f082d 100644 --- a/kernel/power/power.h +++ b/kernel/power/power.h @@ -58,6 +58,7 @@ struct snapshot_handle { struct pbe *pbe, *last_pbe; void *buffer; unsigned int buf_offset; + int sync_read; }; #define data_of(handle) ((handle).buffer + (handle).buf_offset) |