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/stacktrace.h | 52 +++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 kernel/arch/mips/include/asm/stacktrace.h (limited to 'kernel/arch/mips/include/asm/stacktrace.h') diff --git a/kernel/arch/mips/include/asm/stacktrace.h b/kernel/arch/mips/include/asm/stacktrace.h new file mode 100644 index 000000000..780ee2c2a --- /dev/null +++ b/kernel/arch/mips/include/asm/stacktrace.h @@ -0,0 +1,52 @@ +#ifndef _ASM_STACKTRACE_H +#define _ASM_STACKTRACE_H + +#include + +#ifdef CONFIG_KALLSYMS +extern int raw_show_trace; +extern unsigned long unwind_stack(struct task_struct *task, unsigned long *sp, + unsigned long pc, unsigned long *ra); +extern unsigned long unwind_stack_by_address(unsigned long stack_page, + unsigned long *sp, + unsigned long pc, + unsigned long *ra); +#else +#define raw_show_trace 1 +static inline unsigned long unwind_stack(struct task_struct *task, + unsigned long *sp, unsigned long pc, unsigned long *ra) +{ + return 0; +} +#endif + +static __always_inline void prepare_frametrace(struct pt_regs *regs) +{ +#ifndef CONFIG_KALLSYMS + /* + * Remove any garbage that may be in regs (specially func + * addresses) to avoid show_raw_backtrace() to report them + */ + memset(regs, 0, sizeof(*regs)); +#endif + __asm__ __volatile__( + ".set push\n\t" + ".set noat\n\t" +#ifdef CONFIG_64BIT + "1: dla $1, 1b\n\t" + "sd $1, %0\n\t" + "sd $29, %1\n\t" + "sd $31, %2\n\t" +#else + "1: la $1, 1b\n\t" + "sw $1, %0\n\t" + "sw $29, %1\n\t" + "sw $31, %2\n\t" +#endif + ".set pop\n\t" + : "=m" (regs->cp0_epc), + "=m" (regs->regs[29]), "=m" (regs->regs[31]) + : : "memory"); +} + +#endif /* _ASM_STACKTRACE_H */ -- cgit 1.2.3-korg