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linux/arch/sh/mm
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Paul Mundt 0f1a394ba6 sh: lockless UTLB miss fast-path. 
With the refactored update_mmu_cache() introduced in older kernels,
there's no longer any need to take the page_table_lock in this path,
so simply drop it completely.

Without this, performance degradation is seen on SMP on heavily
threaded workloads that don't use the split ptlock, and ultimately
we have no reason to contend for the lock in the first place.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
 		2007-11-19 13:05:18 +09:00
..
Kconfig sh: Kill off the remaining ST40 cruft. 2007-11-07 11:13:55 +09:00
Makefile sh: Add -Werror for clean directories. 2007-11-07 11:13:55 +09:00
cache-debugfs.c sh: Revert incorrect license string changes. 2007-09-24 17:49:51 +09:00
cache-sh2.c sh: Add support for SH7206 and SH7619 CPU subtypes. 2006-12-06 10:45:36 +09:00
cache-sh3.c sh: Fixup cpu_data references for the non-boot CPUs. 2007-02-13 10:54:45 +09:00
cache-sh4.c sh: Calculate cache aliases on L2 caches. 2007-09-24 17:00:45 +09:00
cache-sh7705.c sh: Revert lazy dcache writeback changes. 2007-03-05 19:46:47 +09:00
clear_page.S sh: Kill off __{copy,clear}_user_page(). 2007-11-07 11:14:12 +09:00
consistent.c Remove dma_cache_(wback|inv|wback_inv) functions 2007-10-17 08:42:57 -07:00
copy_page.S sh: Kill off __{copy,clear}_user_page(). 2007-11-07 11:14:12 +09:00
extable.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
fault.c sh: lockless UTLB miss fast-path. 2007-11-19 13:05:18 +09:00
hugetlbpage.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
init.c fix memory hot remove not configured case. 2007-10-16 09:43:02 -07:00
ioremap.c sh: ioremap() through PMB needs asm/mmu.h. 2007-06-04 10:58:23 +09:00
numa.c sh: Support for multiple nodes. 2007-06-08 02:43:49 +00:00
pg-nommu.c sh: Various nommu fixes. 2006-09-27 17:21:02 +09:00
pg-sh4.c sh: Optimized copy_{to,from}_user_page() for SH-4. 2007-11-07 11:14:12 +09:00
pg-sh7705.c sh: Revert lazy dcache writeback changes. 2007-03-05 19:46:47 +09:00
pmb.c Slab API: remove useless ctor parameter and reorder parameters 2007-10-17 08:42:45 -07:00
tlb-flush.c sh: Revert lazy dcache writeback changes. 2007-03-05 19:46:47 +09:00
tlb-nommu.c sh: Local TLB flushing variants for SMP prep. 2007-02-13 10:54:45 +09:00
tlb-sh3.c sh: Revert lazy dcache writeback changes. 2007-03-05 19:46:47 +09:00
tlb-sh4.c sh: Fix up extended mode TLB for SH-X2+ cores. 2007-09-21 11:57:55 +09:00