diff options
| author | Grant Likely <grant.likely@secretlab.ca> | 2012-02-27 22:04:40 +0100 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2012-02-27 22:04:40 +0100 |
| commit | 29f141fed01a09050207c4d41fc5811520d81146 (patch) | |
| tree | c55a51dca4a0e4da9fdc2b904eefbde37d2a5b03 /arch/arm/mm/cache-v7.S | |
| parent | dt: add empty of_find_compatible_node function (diff) | |
| parent | doc: dt: Fix broken reference in gpio-leds documentation (diff) | |
| download | linux-29f141fed01a09050207c4d41fc5811520d81146.tar.xz linux-29f141fed01a09050207c4d41fc5811520d81146.zip | |
Merge branch 'fixes-for-grant' of git://sources.calxeda.com/kernel/linux into devicetree/merge
Diffstat (limited to 'arch/arm/mm/cache-v7.S')
| -rw-r--r-- | arch/arm/mm/cache-v7.S | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S index 07c4bc8ea0a4..a655d3da386d 100644 --- a/arch/arm/mm/cache-v7.S +++ b/arch/arm/mm/cache-v7.S @@ -54,9 +54,15 @@ loop1: and r1, r1, #7 @ mask of the bits for current cache only cmp r1, #2 @ see what cache we have at this level blt skip @ skip if no cache, or just i-cache +#ifdef CONFIG_PREEMPT + save_and_disable_irqs_notrace r9 @ make cssr&csidr read atomic +#endif mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr isb @ isb to sych the new cssr&csidr mrc p15, 1, r1, c0, c0, 0 @ read the new csidr +#ifdef CONFIG_PREEMPT + restore_irqs_notrace r9 +#endif and r2, r1, #7 @ extract the length of the cache lines add r2, r2, #4 @ add 4 (line length offset) ldr r4, =0x3ff |