From 4e0748f5beb92a14f6be4716938cbf27177ecd07 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Thu, 13 Nov 2014 11:25:27 +0000 Subject: [PATCH] MIPS: Use generic checksum functions for MIPS R6 The following instructions have been removed from MIPS R6 ulw, ulh, swl, lwr, lwl, swr. However, all of them are used in the MIPS specific checksum implementation. As a result of which, we will use the generic checksum on MIPS R6 Signed-off-by: Markos Chandras --- arch/mips/Kconfig | 5 +++++ arch/mips/include/asm/Kbuild | 1 + arch/mips/include/asm/checksum.h | 5 +++++ arch/mips/kernel/mips_ksyms.c | 2 ++ arch/mips/lib/Makefile | 1 + 5 files changed, 14 insertions(+) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index c01e1d4..0a8508b 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1034,6 +1034,9 @@ config MIPS_MACHINE config NO_IOPORT_MAP def_bool n +config GENERIC_CSUM + bool + config GENERIC_ISA_DMA bool select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n @@ -1312,6 +1315,7 @@ config CPU_MIPS32_R6 select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_HIGHMEM select CPU_SUPPORTS_MSA + select GENERIC_CSUM select HAVE_KVM select MIPS_O32_FP64_SUPPORT help @@ -1363,6 +1367,7 @@ config CPU_MIPS64_R6 select CPU_SUPPORTS_64BIT_KERNEL select CPU_SUPPORTS_HIGHMEM select CPU_SUPPORTS_MSA + select GENERIC_CSUM help Choose this option to build a kernel for release 6 or later of the MIPS64 architecture. New MIPS processors, starting with the Warrior diff --git a/arch/mips/include/asm/Kbuild b/arch/mips/include/asm/Kbuild index 200efea..526539c 100644 --- a/arch/mips/include/asm/Kbuild +++ b/arch/mips/include/asm/Kbuild @@ -1,4 +1,5 @@ # MIPS headers +generic-(CONFIG_GENERIC_CSUM) += checksum.h generic-y += cputime.h generic-y += current.h generic-y += dma-contiguous.h diff --git a/arch/mips/include/asm/checksum.h b/arch/mips/include/asm/checksum.h index 5996252..5c585c5 100644 --- a/arch/mips/include/asm/checksum.h +++ b/arch/mips/include/asm/checksum.h @@ -12,6 +12,10 @@ #ifndef _ASM_CHECKSUM_H #define _ASM_CHECKSUM_H +#ifdef CONFIG_GENERIC_CSUM +#include +#else + #include #include @@ -274,5 +278,6 @@ static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr, } #include +#endif /* CONFIG_GENERIC_CSUM */ #endif /* _ASM_CHECKSUM_H */ diff --git a/arch/mips/kernel/mips_ksyms.c b/arch/mips/kernel/mips_ksyms.c index 17eaf0c..ac66c30 100644 --- a/arch/mips/kernel/mips_ksyms.c +++ b/arch/mips/kernel/mips_ksyms.c @@ -67,11 +67,13 @@ EXPORT_SYMBOL(__strnlen_kernel_asm); EXPORT_SYMBOL(__strnlen_user_nocheck_asm); EXPORT_SYMBOL(__strnlen_user_asm); +#ifndef CONFIG_CPU_MIPSR6 EXPORT_SYMBOL(csum_partial); EXPORT_SYMBOL(csum_partial_copy_nocheck); EXPORT_SYMBOL(__csum_partial_copy_kernel); EXPORT_SYMBOL(__csum_partial_copy_to_user); EXPORT_SYMBOL(__csum_partial_copy_from_user); +#endif EXPORT_SYMBOL(invalid_pte_table); #ifdef CONFIG_FUNCTION_TRACER diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile index eeddc58..1e9e900 100644 --- a/arch/mips/lib/Makefile +++ b/arch/mips/lib/Makefile @@ -8,6 +8,7 @@ lib-y += bitops.o csum_partial.o delay.o memcpy.o memset.o \ obj-y += iomap.o obj-$(CONFIG_PCI) += iomap-pci.o +lib-$(CONFIG_GENERIC_CSUM) := $(filter-out csum_partial.o, $(lib-y)) obj-$(CONFIG_CPU_GENERIC_DUMP_TLB) += dump_tlb.o obj-$(CONFIG_CPU_R3000) += r3k_dump_tlb.o -- 2.7.4