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authorChristoph Hellwig <hch@lst.de>2007-05-08 00:23:29 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-08 11:14:58 -0700
commitab1b6f03a10ba1f5638188ab06bf46e33ac3a160 (patch)
tree2dc7ce01df5d51d81e250dd9cee1b7b04627466e /arch/s390/kernel/stacktrace.c
parent7e4c3690b07f04b1942c39db358a5c8a72831daa (diff)
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/s390/kernel/stacktrace.c')
-rw-r--r--arch/s390/kernel/stacktrace.c18
1 files changed, 7 insertions, 11 deletions
diff --git a/arch/s390/kernel/stacktrace.c b/arch/s390/kernel/stacktrace.c
index 2e5c65a1863..515ff9011dd 100644
--- a/arch/s390/kernel/stacktrace.c
+++ b/arch/s390/kernel/stacktrace.c
@@ -59,7 +59,7 @@ static unsigned long save_context_stack(struct stack_trace *trace,
}
}
-void save_stack_trace(struct stack_trace *trace, struct task_struct *task)
+void save_stack_trace(struct stack_trace *trace)
{
register unsigned long sp asm ("15");
unsigned long orig_sp, new_sp;
@@ -69,20 +69,16 @@ void save_stack_trace(struct stack_trace *trace, struct task_struct *task)
new_sp = save_context_stack(trace, &trace->skip, orig_sp,
S390_lowcore.panic_stack - PAGE_SIZE,
S390_lowcore.panic_stack);
- if ((new_sp != orig_sp) && !trace->all_contexts)
+ if (new_sp != orig_sp)
return;
new_sp = save_context_stack(trace, &trace->skip, new_sp,
S390_lowcore.async_stack - ASYNC_SIZE,
S390_lowcore.async_stack);
- if ((new_sp != orig_sp) && !trace->all_contexts)
+ if (new_sp != orig_sp)
return;
- if (task)
- save_context_stack(trace, &trace->skip, new_sp,
- (unsigned long) task_stack_page(task),
- (unsigned long) task_stack_page(task) + THREAD_SIZE);
- else
- save_context_stack(trace, &trace->skip, new_sp,
- S390_lowcore.thread_info,
- S390_lowcore.thread_info + THREAD_SIZE);
+
+ save_context_stack(trace, &trace->skip, new_sp,
+ S390_lowcore.thread_info,
+ S390_lowcore.thread_info + THREAD_SIZE);
return;
}