diff options
| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2006-09-26 23:44:01 +0900 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2006-10-01 23:16:57 +0100 |
| commit | 1df0f0ff7e56f6dcb1351b9490d55ebf91ff4bd8 (patch) | |
| tree | f309b9cf0293c973683b4fa3fab5bbb74e415d47 /arch/mips/kernel/traps.c | |
| parent | eae6c0da9df81300895949897c0451423340ac40 (diff) | |
[MIPS] lockdep: Add STACKTRACE_SUPPORT and enable LOCKDEP_SUPPORT
Implement stacktrace interface by using unwind_stack() and enable lockdep
support in Kconfig.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/traps.c')
| -rw-r--r-- | arch/mips/kernel/traps.c | 37 |
1 files changed, 3 insertions, 34 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index e51d8fd9a15..440b8651fd8 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -41,6 +41,7 @@ #include <asm/mmu_context.h> #include <asm/watch.h> #include <asm/types.h> +#include <asm/stacktrace.h> extern asmlinkage void handle_int(void); extern asmlinkage void handle_tlbm(void); @@ -92,16 +93,14 @@ static void show_raw_backtrace(unsigned long reg29) } #ifdef CONFIG_KALLSYMS -static int raw_show_trace; +int raw_show_trace; static int __init set_raw_show_trace(char *str) { raw_show_trace = 1; return 1; } __setup("raw_show_trace", set_raw_show_trace); - -extern unsigned long unwind_stack(struct task_struct *task, unsigned long *sp, - unsigned long pc, unsigned long ra); +#endif static void show_backtrace(struct task_struct *task, struct pt_regs *regs) { @@ -121,9 +120,6 @@ static void show_backtrace(struct task_struct *task, struct pt_regs *regs) } while (pc); printk("\n"); } -#else -#define show_backtrace(task, r) show_raw_backtrace((r)->regs[29]); -#endif /* * This routine abuses get_user()/put_user() to reference pointers @@ -158,28 +154,6 @@ static void show_stacktrace(struct task_struct *task, struct pt_regs *regs) show_backtrace(task, regs); } -static __always_inline void prepare_frametrace(struct pt_regs *regs) -{ - __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"); -} - void show_stack(struct task_struct *task, unsigned long *sp) { struct pt_regs regs; @@ -206,11 +180,6 @@ void dump_stack(void) { struct pt_regs regs; - /* - * Remove any garbage that may be in regs (specially func - * addresses) to avoid show_raw_backtrace() to report them - */ - memset(®s, 0, sizeof(regs)); prepare_frametrace(®s); show_backtrace(current, ®s); } |