Re: [PATCH 1/2] ARM: pgtable: add pgprot_writethrough() macro
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From: Grazvydas Ignotas <hidden>
Date: 2012-08-08 11:07:55
Also in:
linux-arm-kernel, linux-omap
Revision v1 of 2 in this series.
Revisions (2)
- v1 [diff vs current]
- v1 current
On Tue, May 22, 2012 at 10:54 PM, Siarhei Siamashka [off-list ref] wrote:
Needed for remapping pages with write-through cacheable attribute. May be useful for framebuffers.
With this series applied, some of my framebuffer programs get over 70% performance improvement, could we get this patch in? OMAP DSS maintainer agreed to take the second patch if this can be merged.
quoted hunk ↗ jump to hunk
Signed-off-by: Siarhei Siamashka <redacted> --- arch/arm/include/asm/pgtable.h | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h index f66626d..04297fa 100644 --- a/arch/arm/include/asm/pgtable.h +++ b/arch/arm/include/asm/pgtable.h@@ -103,6 +103,9 @@ extern pgprot_t pgprot_kernel; #define pgprot_stronglyordered(prot) \ __pgprot_modify(prot, L_PTE_MT_MASK, L_PTE_MT_UNCACHED) +#define pgprot_writethrough(prot) \ + __pgprot_modify(prot, L_PTE_MT_MASK, L_PTE_MT_WRITETHROUGH) + #ifdef CONFIG_ARM_DMA_MEM_BUFFERABLE #define pgprot_dmacoherent(prot) \ __pgprot_modify(prot, L_PTE_MT_MASK, L_PTE_MT_BUFFERABLE | L_PTE_XN) --1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
-- Gražvydas