diff options
Diffstat (limited to 'target/linux/generic/pending-5.4/341-MIPS-mm-remove-no-op-dma_map_ops-where-possible.patch')
| -rw-r--r-- | target/linux/generic/pending-5.4/341-MIPS-mm-remove-no-op-dma_map_ops-where-possible.patch | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/target/linux/generic/pending-5.4/341-MIPS-mm-remove-no-op-dma_map_ops-where-possible.patch b/target/linux/generic/pending-5.4/341-MIPS-mm-remove-no-op-dma_map_ops-where-possible.patch deleted file mode 100644 index 07a6da453f..0000000000 --- a/target/linux/generic/pending-5.4/341-MIPS-mm-remove-no-op-dma_map_ops-where-possible.patch +++ /dev/null @@ -1,82 +0,0 @@ -From 203f17906ff45705fbdaa0430dbbc71142c2640f Mon Sep 17 00:00:00 2001 -From: Hauke Mehrtens <hauke@hauke-m.de> -Date: Sat, 8 Dec 2018 21:45:53 +0100 -Subject: [PATCH 1/3] MIPS: Compile post DMA flush only when needed - -dma_sync_phys() is only called for some CPUs when a mapping is removed. -Add ARCH_HAS_SYNC_DMA_FOR_CPU only for the CPUs listed in -cpu_needs_post_dma_flush() which need this extra call and do not compile -this code in for other CPUs. We need this for R10000, R12000, BMIPS5000 -CPUs and CPUs supporting MAAR which was introduced in MIPS32r5. - -This will hopefully improve the performance of the not affected devices. - -Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> ---- - arch/mips/Kconfig | 6 +++++- - arch/mips/mm/dma-noncoherent.c | 2 ++ - 2 files changed, 7 insertions(+), 1 deletion(-) - ---- a/arch/mips/Kconfig -+++ b/arch/mips/Kconfig -@@ -1117,7 +1117,6 @@ config DMA_PERDEV_COHERENT - config DMA_NONCOHERENT - bool - select ARCH_HAS_SYNC_DMA_FOR_DEVICE -- select ARCH_HAS_SYNC_DMA_FOR_CPU - select NEED_DMA_MAP_STATE - select DMA_NONCOHERENT_MMAP - select DMA_NONCOHERENT_CACHE_SYNC -@@ -1898,9 +1897,11 @@ config SYS_HAS_CPU_MIPS32_R3_5 - - config SYS_HAS_CPU_MIPS32_R5 - bool -+ select ARCH_HAS_SYNC_DMA_FOR_CPU - - config SYS_HAS_CPU_MIPS32_R6 - bool -+ select ARCH_HAS_SYNC_DMA_FOR_CPU - - config SYS_HAS_CPU_MIPS64_R1 - bool -@@ -1910,6 +1911,7 @@ config SYS_HAS_CPU_MIPS64_R2 - - config SYS_HAS_CPU_MIPS64_R6 - bool -+ select ARCH_HAS_SYNC_DMA_FOR_CPU - - config SYS_HAS_CPU_R3000 - bool -@@ -1946,6 +1948,7 @@ config SYS_HAS_CPU_R8000 - - config SYS_HAS_CPU_R10000 - bool -+ select ARCH_HAS_SYNC_DMA_FOR_CPU - - config SYS_HAS_CPU_RM7000 - bool -@@ -1974,6 +1977,7 @@ config SYS_HAS_CPU_BMIPS4380 - config SYS_HAS_CPU_BMIPS5000 - bool - select SYS_HAS_CPU_BMIPS -+ select ARCH_HAS_SYNC_DMA_FOR_CPU - - config SYS_HAS_CPU_XLR - bool ---- a/arch/mips/mm/dma-noncoherent.c -+++ b/arch/mips/mm/dma-noncoherent.c -@@ -191,12 +191,14 @@ void arch_sync_dma_for_device(struct dev - dma_sync_phys(paddr, size, dir); - } - -+#ifdef CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU - void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr, - size_t size, enum dma_data_direction dir) - { - if (cpu_needs_post_dma_flush(dev)) - dma_sync_phys(paddr, size, dir); - } -+#endif - - void arch_dma_cache_sync(struct device *dev, void *vaddr, size_t size, - enum dma_data_direction direction) |