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| author | Paul Mundt <lethal@linux-sh.org> | 2007-11-19 13:00:32 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2007-11-19 13:00:32 +0900 |
| commit | 1c6b2ca5e0939bf8b5d1a11f1646f25189ecd447 (patch) | |
| tree | cec70f706b92e968ab9f56c16d670e65dc9c9f54 /scripts/patch-kernel | |
| parent | sh: Fix copy_{to,from}_user_page() with cache disabled. (diff) | |
| download | linux-1c6b2ca5e0939bf8b5d1a11f1646f25189ecd447.tar.gz linux-1c6b2ca5e0939bf8b5d1a11f1646f25189ecd447.zip | |
sh: Kill off UTLB flush in fast-path.
The __do_page_fault() fast-path contains a UTLB flush in order to
force an ITLB reload, this isn't needed in practice as the ITLB is
auto-reloaded from the UTLB anyways, which is already displaced by
the manual 'ldtlb' in the update_mmu_cache() path.
This provides a measurable speed up in the TLB miss fast-path.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'scripts/patch-kernel')
0 files changed, 0 insertions, 0 deletions