Commit c4845a4b authored Sep 09, 2009 by Paul Mundt

sh: Fix up redundant cache flushing for PAGE_SIZE > 4k.

If PAGE_SIZE is presently over 4k we do a lot of extra flushing given
that we purge the cache 4k at a time. Make it explicitly 4k per
iteration, rather than iterating for PAGE_SIZE before looping over again.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

parent deaef20e

arch/sh/mm/cache-sh4.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -357,7 +357,7 @@ static void __flush_cache_4096(unsigned long addr, unsigned long phys,
		* pointless nead-of-loop check for 0 iterations.
		*/
		do {
		ea = base_addr + PAGE_SIZE;
		ea = base_addr + 4096;
		a = base_addr;
		p = phys;