kernel: add patch header and missing part in 132-mips_inline_dma_ops.patch again

[15.05/openwrt.git] / target / linux / generic / patches-3.13 / 132-mips_inline_dma_ops.patch

diff --git a/target/linux/generic/patches-3.13/132-mips_inline_dma_ops.patch b/target/linux/generic/patches-3.13/132-mips_inline_dma_ops.patch
index 53cbbb2..a42a049 100644 (file)
--- a/target/linux/generic/patches-3.13/132-mips_inline_dma_ops.patch
+++ b/target/linux/generic/patches-3.13/132-mips_inline_dma_ops.patch
@@ -1,6 +1,33 @@
+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
-@@ -1377,6 +1377,7 @@ config CPU_CAVIUM_OCTEON
+@@ -1145,6 +1145,7 @@ config CPU_LOONGSON2F
+       depends on SYS_HAS_CPU_LOONGSON2F
+       select CPU_LOONGSON2
+       select ARCH_REQUIRE_GPIOLIB
++      select SYS_HAS_DMA_OPS
+       help
+         The Loongson 2F processor implements the MIPS III instruction set
+         with many extensions.
+@@ -1377,6 +1378,7 @@ config CPU_CAVIUM_OCTEON
        select LIBFDT
        select USE_OF
        select USB_EHCI_BIG_ENDIAN_MMIO
@@ -8,7 +35,7 @@
        help
          The Cavium Octeon processor is a highly integrated chip containing
          many ethernet hardware widgets for networking tasks. The processor
-@@ -1599,6 +1600,9 @@ config SYS_HAS_CPU_XLR
+@@ -1599,6 +1601,9 @@ config SYS_HAS_CPU_XLR
  config SYS_HAS_CPU_XLP
        bool