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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-09-07 14:18:36 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-09-07 14:18:36 -0700 |
| commit | 7e66eaf14e19c032433be7c4df3c892fa2a5282f (patch) | |
| tree | 56b0d5f9d16eb18744e102f3f216715196cd62e6 /arch/mips/kernel/process.c | |
| parent | d3654d7ef3adad0083525cfb6fe27be62cb83d0d (diff) | |
| parent | c6a389f123b9f68d605bb7e0f9b32ec1e3e14132 (diff) | |
Merge commit 'v3.1-rc4' into next
Diffstat (limited to 'arch/mips/kernel/process.c')
| -rw-r--r-- | arch/mips/kernel/process.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index d2112d3cf11..b30cb2573aa 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -103,7 +103,6 @@ void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long sp) __init_dsp(); regs->cp0_epc = pc; regs->regs[29] = sp; - current_thread_info()->addr_limit = USER_DS; } void exit_thread(void) @@ -373,18 +372,18 @@ unsigned long thread_saved_pc(struct task_struct *tsk) #ifdef CONFIG_KALLSYMS -/* used by show_backtrace() */ -unsigned long unwind_stack(struct task_struct *task, unsigned long *sp, - unsigned long pc, unsigned long *ra) +/* generic stack unwinding function */ +unsigned long notrace unwind_stack_by_address(unsigned long stack_page, + unsigned long *sp, + unsigned long pc, + unsigned long *ra) { - unsigned long stack_page; struct mips_frame_info info; unsigned long size, ofs; int leaf; extern void ret_from_irq(void); extern void ret_from_exception(void); - stack_page = (unsigned long)task_stack_page(task); if (!stack_page) return 0; @@ -443,6 +442,15 @@ unsigned long unwind_stack(struct task_struct *task, unsigned long *sp, *ra = 0; return __kernel_text_address(pc) ? pc : 0; } +EXPORT_SYMBOL(unwind_stack_by_address); + +/* used by show_backtrace() */ +unsigned long unwind_stack(struct task_struct *task, unsigned long *sp, + unsigned long pc, unsigned long *ra) +{ + unsigned long stack_page = (unsigned long)task_stack_page(task); + return unwind_stack_by_address(stack_page, sp, pc, ra); +} #endif /* |