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(parent: 0349337) | patch
sh: Kill off UTLB flush in fast-path.
authorPaul Mundt <lethal@linux-sh.org>
Mon, 19 Nov 2007 04:00:32 +0000 (13:00 +0900)
committerPaul Mundt <lethal@linux-sh.org>
Mon, 19 Nov 2007 04:00:32 +0000 (13:00 +0900)
commit1c6b2ca5e0939bf8b5d1a11f1646f25189ecd447
treecec70f706b92e968ab9f56c16d670e65dc9c9f54tree | snapshot (tar.gz zip)
parent0349337467dc6039dcfb225074944ae944e7b34ecommit | diff
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>
arch/sh/mm/fault.c diff | blob | blame | history