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| author | Phil Edworthy <phil.edworthy@renesas.com> | 2012-01-09 16:08:47 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2012-01-12 13:11:02 +0900 |
| commit | c1537b4863da620f12f5b42ece61bf65314148ed (patch) | |
| tree | fb1dddd002d8207cb84c1c8fde1f58335449db18 /arch/sh/mm/init.c | |
| parent | e343a895a9f342f239c5e3c5ffc6c0b1707e6244 (diff) | |
| download | blackbird-op-linux-c1537b4863da620f12f5b42ece61bf65314148ed.tar.gz blackbird-op-linux-c1537b4863da620f12f5b42ece61bf65314148ed.zip | |
sh: sh2a: Improve cache flush/invalidate functions
The cache functions lock out interrupts for long periods; this patch
reduces the impact when operating on large address ranges. In such
cases it will:
- Invalidate the entire cache rather than individual addresses.
- Do nothing when flushing the operand cache in write-through mode.
- When flushing the operand cache in write-back mdoe, index the
search for matching addresses on the cache entires instead of the
addresses to flush
Note: sh2a__flush_purge_region was only invalidating the operand
cache, this adds flush.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/mm/init.c')
0 files changed, 0 insertions, 0 deletions
