diff options
| author | Andrew Morton <akpm@digeo.com> | 2003-04-12 12:55:02 -0700 |
|---|---|---|
| committer | James Bottomley <jejb@raven.il.steeleye.com> | 2003-04-12 12:55:02 -0700 |
| commit | edf20d3a05e5099347f58bd7ddf729a6489340c7 (patch) | |
| tree | 37078e37a3c1b7728cc22eb32849341a48391993 /include/asm-sh | |
| parent | 831cbe240825abad390981d90b18eedec8f419b5 (diff) | |
[PATCH] Remove flush_page_to_ram()
From: Hugh Dickins <hugh@veritas.com>
This patch removes the long deprecated flush_page_to_ram. We have
two different schemes for doing this cache flushing stuff, the old
flush_page_to_ram way and the not so old flush_dcache_page etc. way:
see DaveM's Documentation/cachetlb.txt. Keeping flush_page_to_ram
around is confusing, and makes it harder to get this done right.
All architectures are updated, but the only ones where it amounts
to more than deleting a line or two are m68k, mips, mips64 and v850.
I followed a prescription from DaveM (though not to the letter), that
those arches with non-nop flush_page_to_ram need to do what it did
in their clear_user_page and copy_user_page and flush_dcache_page.
Dave is consterned that, in the v850 nb85e case, this patch leaves its
flush_dcache_page as was, uses it in clear_user_page and copy_user_page,
instead of making them all flush icache as well. That may be wrong:
I'm just hesitant to add cruft blindly, changing a flush_dcache macro
to flush icache too; and naively hope that the necessary flush_icache
calls are already in place. Miles, please let us know which way is
right for v850 nb85e - thanks.
Diffstat (limited to 'include/asm-sh')
| -rw-r--r-- | include/asm-sh/pgtable.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/include/asm-sh/pgtable.h b/include/asm-sh/pgtable.h index ce110d76fcc8..697d4604d6ab 100644 --- a/include/asm-sh/pgtable.h +++ b/include/asm-sh/pgtable.h @@ -26,7 +26,6 @@ extern void paging_init(void); * - flush_cache_range(vma, start, end) flushes a range of pages * * - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache - * - flush_page_to_ram(page) write back kernel page to ram * - flush_icache_range(start, end) flushes(invalidates) a range for icache * - flush_icache_page(vma, pg) flushes(invalidates) a page for icache * @@ -37,7 +36,6 @@ extern void paging_init(void); #define flush_cache_mm(mm) do { } while (0) #define flush_cache_range(vma, start, end) do { } while (0) #define flush_cache_page(vma, vmaddr) do { } while (0) -#define flush_page_to_ram(page) do { } while (0) #define flush_dcache_page(page) do { } while (0) #define flush_icache_range(start, end) do { } while (0) #define flush_icache_page(vma,pg) do { } while (0) @@ -63,7 +61,6 @@ extern void flush_dcache_page(struct page *pg); extern void flush_icache_range(unsigned long start, unsigned long end); extern void flush_cache_sigtramp(unsigned long addr); -#define flush_page_to_ram(page) do { } while (0) #define flush_icache_page(vma,pg) do { } while (0) #define flush_icache_user_range(vma,pg,adr,len) do { } while (0) |