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| author | Ingo Molnar <mingo@elte.hu> | 2009-05-18 07:37:44 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-18 07:37:49 +0200 |
| commit | dc3f81b129b5439ba7bac265bbc6a51a39275dae (patch) | |
| tree | 216030731d911249496d2e97206cd61431e31c89 /arch/xtensa/kernel/traps.c | |
| parent | d2517a49d55536b38c7a87e5289550cfedaa4dcc (diff) | |
| parent | 1406de8e11eb043681297adf86d6892ff8efc27a (diff) | |
| download | op-kernel-dev-dc3f81b129b5439ba7bac265bbc6a51a39275dae.zip op-kernel-dev-dc3f81b129b5439ba7bac265bbc6a51a39275dae.tar.gz | |
Merge commit 'v2.6.30-rc6' into perfcounters/core
Merge reason: this branch was on an -rc4 base, merge it up to -rc6
to get the latest upstream fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/xtensa/kernel/traps.c')
| -rw-r--r-- | arch/xtensa/kernel/traps.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c index 9f0b711..ba9ab93 100644 --- a/arch/xtensa/kernel/traps.c +++ b/arch/xtensa/kernel/traps.c @@ -369,6 +369,18 @@ void show_regs(struct pt_regs * regs) regs->syscall); } +static __always_inline unsigned long *stack_pointer(struct task_struct *task) +{ + unsigned long *sp; + + if (!task || task == current) + __asm__ __volatile__ ("mov %0, a1\n" : "=a"(sp)); + else + sp = (unsigned long *)task->thread.sp; + + return sp; +} + void show_trace(struct task_struct *task, unsigned long *sp) { unsigned long a0, a1, pc; @@ -377,7 +389,7 @@ void show_trace(struct task_struct *task, unsigned long *sp) if (sp) a1 = (unsigned long)sp; else - a1 = task->thread.sp; + a1 = (unsigned long)stack_pointer(task); sp_start = a1 & ~(THREAD_SIZE-1); sp_end = sp_start + THREAD_SIZE; @@ -420,7 +432,7 @@ void show_stack(struct task_struct *task, unsigned long *sp) unsigned long *stack; if (!sp) - sp = (unsigned long *)task->thread.sp; + sp = stack_pointer(task); stack = sp; printk("\nStack: "); |
