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>
diff --git a/arch/sparc64/kernel/stacktrace.c b/arch/sparc64/kernel/stacktrace.c
index c4d15f2..47f92a5 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;