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[PATCH] EDAC: atomic scrub operations

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EDAC requires a way to scrub memory if an ECC error is found and the chipset
does not do the work automatically.  That means rewriting memory locations
atomically with respect to all CPUs _and_ bus masters.  That means we can't
use atomic_add(foo, 0) as it gets optimised for non-SMP

This adds a function to include/asm-foo/atomic.h for the platforms currently
supported which implements a scrub of a mapped block.

It also adjusts a few other files include order where atomic.h is included
before types.h as this now causes an error as atomic_scrub uses u32.

Signed-off-by: Alan Cox <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Alan Cox 2006-01-18 17:44:07 -08:00 • committed by Linus Torvalds
commit 715b49ef2d
7 changed files with 29 additions and 3 deletions
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1
drivers/md/kcopyd.c
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@ -8,6 +8,7 @@
* completion notification.
*/
#include <asm/types.h>
#include <asm/atomic.h>
#include <linux/blkdev.h>