From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/mips/include/asm/edac.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 kernel/arch/mips/include/asm/edac.h (limited to 'kernel/arch/mips/include/asm/edac.h') diff --git a/kernel/arch/mips/include/asm/edac.h b/kernel/arch/mips/include/asm/edac.h new file mode 100644 index 000000000..94105d3f5 --- /dev/null +++ b/kernel/arch/mips/include/asm/edac.h @@ -0,0 +1,36 @@ +#ifndef ASM_EDAC_H +#define ASM_EDAC_H + +#include + +/* ECC atomic, DMA, SMP and interrupt safe scrub function */ + +static inline void atomic_scrub(void *va, u32 size) +{ + unsigned long *virt_addr = va; + unsigned long temp; + u32 i; + + for (i = 0; i < size / sizeof(unsigned long); i++) { + /* + * Very carefully read and write to memory atomically + * so we are interrupt, DMA and SMP safe. + * + * Intel: asm("lock; addl $0, %0"::"m"(*virt_addr)); + */ + + __asm__ __volatile__ ( + " .set mips2 \n" + "1: ll %0, %1 # atomic_scrub \n" + " addu %0, $0 \n" + " sc %0, %1 \n" + " beqz %0, 1b \n" + " .set mips0 \n" + : "=&r" (temp), "=" GCC_OFF_SMALL_ASM() (*virt_addr) + : GCC_OFF_SMALL_ASM() (*virt_addr)); + + virt_addr++; + } +} + +#endif -- cgit 1.2.3-korg