diff options
Diffstat (limited to 'target/linux/generic/patches-3.14/132-mips_inline_dma_ops.patch')
| -rw-r--r-- | target/linux/generic/patches-3.14/132-mips_inline_dma_ops.patch | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.14/132-mips_inline_dma_ops.patch b/target/linux/generic/patches-3.14/132-mips_inline_dma_ops.patch index 0259214bb3..e43de025e6 100644 --- a/target/linux/generic/patches-3.14/132-mips_inline_dma_ops.patch +++ b/target/linux/generic/patches-3.14/132-mips_inline_dma_ops.patch @@ -1,3 +1,22 @@ +From 2c58080407554e1bac8fd50d23cb02420524caed Mon Sep 17 00:00:00 2001 +From: Felix Fietkau <nbd@openwrt.org> +Date: Mon, 12 Aug 2013 12:50:22 +0200 +Subject: [PATCH] MIPS: partially inline dma ops + +Several DMA ops are no-op on many platforms, and the indirection through +the mips_dma_map_ops function table is causing the compiler to emit +unnecessary code. + +Inlining visibly improves network performance in my tests (on a 24Kc +based system), and also slightly reduces code size of a few drivers. + +Signed-off-by: Felix Fietkau <nbd@openwrt.org> +--- + arch/mips/Kconfig | 4 + + arch/mips/include/asm/dma-mapping.h | 360 +++++++++++++++++++++++++++++++++++- + arch/mips/mm/dma-default.c | 163 ++-------------- + 3 files changed, 373 insertions(+), 154 deletions(-) + --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1620,6 +1620,9 @@ config SYS_HAS_CPU_XLR |