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| author | Christoph Hellwig <hch@lst.de> | 2007-05-08 00:23:29 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-08 11:14:58 -0700 |
| commit | ab1b6f03a10ba1f5638188ab06bf46e33ac3a160 (patch) | |
| tree | 2dc7ce01df5d51d81e250dd9cee1b7b04627466e /arch/sparc64 | |
| parent | 7e4c3690b07f04b1942c39db358a5c8a72831daa (diff) | |
| download | lwn-ab1b6f03a10ba1f5638188ab06bf46e33ac3a160.tar.gz lwn-ab1b6f03a10ba1f5638188ab06bf46e33ac3a160.zip | |
simplify the stacktrace code
Simplify the stacktrace code:
- remove the unused task argument to save_stack_trace, it's always
current
- remove the all_contexts flag, it's alwasy 0
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Andi Kleen <ak@suse.de>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/sparc64')
| -rw-r--r-- | arch/sparc64/kernel/stacktrace.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/arch/sparc64/kernel/stacktrace.c b/arch/sparc64/kernel/stacktrace.c index c4d15f2762b9..47f92a59be18 100644 --- a/arch/sparc64/kernel/stacktrace.c +++ b/arch/sparc64/kernel/stacktrace.c @@ -3,22 +3,16 @@ #include <linux/thread_info.h> #include <asm/ptrace.h> -void save_stack_trace(struct stack_trace *trace, struct task_struct *task) +void save_stack_trace(struct stack_trace *trace) { unsigned long ksp, fp, thread_base; - struct thread_info *tp; + struct thread_info *tp = task_thread_info(current); - if (!task) - task = current; - tp = task_thread_info(task); - if (task == current) { - flushw_all(); - __asm__ __volatile__( - "mov %%fp, %0" - : "=r" (ksp) - ); - } else - ksp = tp->ksp; + flushw_all(); + __asm__ __volatile__( + "mov %%fp, %0" + : "=r" (ksp) + ); fp = ksp + STACK_BIAS; thread_base = (unsigned long) tp; |