Commit Graph

8 Commits

Author SHA1 Message Date
David Howells b478491f26 MN10300: Allow some cacheflushes to be avoided if cache snooping is available
The AM34 core is able to do cache snooping, and so can skip some of the cache
flushing.

Signed-off-by: David Howells <dhowells@redhat.com>
2010-10-27 17:28:46 +01:00
Akira Takeuchi 0bd3eb6ca7 MN10300: SMP: Differentiate local cache flushing
Differentiate local cache flushing from global cache flushing so that they can
be done differently on SMP systems.

Rename the cache functions from:

	mn10300_[id]cache_*()

to:

	mn10300_[id]_localcache_*()

and on a UP system, assign the global labels to the local labels.

Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2010-10-27 17:28:45 +01:00
Akira Takeuchi 9b287bf992 MN10300: Cacheflush functions should take unsigned long addresses
The functions that perform cache flushing should take addresses of unsigned
long type, not unsigned int.

Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2010-10-27 17:28:44 +01:00
David Howells 93c10d3d68 MN10300: Reorder asm/cacheflush.h to put primitives first
Reorder asm/cacheflush.h to put arch primitives first, before the main
functions so that the main functions can be inline asm rather than #defines
when non-trivial.

Signed-off-by: David Howells <dhowells@redhat.com>
2010-10-27 17:28:43 +01:00
David Howells 344af921e6 MN10300: Provide a MN10300_CACHE_ENABLED config option
Provide a MN10300_CACHE_ENABLED config option as inverted logic of
MN10300_CACHE_DISABLED to make things simpler.

Signed-off-by: David Howells <dhowells@redhat.com>
2010-10-27 17:28:42 +01:00
Ilya Loginov 2d4dc890b5 block: add helpers to run flush_dcache_page() against a bio and a request's pages
Mtdblock driver doesn't call flush_dcache_page for pages in request.  So,
this causes problems on architectures where the icache doesn't fill from
the dcache or with dcache aliases.  The patch fixes this.

The ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE symbol was introduced to avoid
pointless empty cache-thrashing loops on architectures for which
flush_dcache_page() is a no-op.  Every architecture was provided with this
flush pages on architectires where ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE is
equal 1 or do nothing otherwise.

See "fix mtd_blkdevs problem with caches on some architectures" discussion
on LKML for more information.

Signed-off-by: Ilya Loginov <isloginov@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Peter Horton <phorton@bitbox.co.uk>
Cc: "Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-11-26 09:16:19 +01:00
Uwe Kleine-Koenig 3dbda77e6f trivial: fix typos "man[ae]g?ment" -> "management"
Signed-off-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-09-21 15:14:56 +02:00
David Howells da7616610c Move arch headers from include/asm-mn10300/ to arch/mn10300/include/asm/.
Signed-off-by: David Howells <dhowells@redhat.com>
2009-04-10 14:19:03 +01:00