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authorDavid McCullough <david_mccullough@au.securecomputing.com>2007-07-26 04:46:07 -0400
committerPaul Mundt <lethal@linux-sh.org>2007-07-26 04:46:07 -0400
commitc64ac9f0581a80b6200846e7007a33c3b24ef745 (patch)
tree2debaa0d6163c2052ba873f0bf07febac6013140 /arch/sh/kernel
parent1f25756a11d662a986553754bf398ccc38f3925e (diff)
sh: fix get_wchan() for SH kernels without framepointers
Do not follow the frame pointers (/proc/X/task/1/stat) unless we were compiled with them. Signed-off-by: David McCullough <david_mccullough@au.securecomputing.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel')
-rw-r--r--arch/sh/kernel/process.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c
index 6334a4c54c7c..3a1783010c03 100644
--- a/arch/sh/kernel/process.c
+++ b/arch/sh/kernel/process.c
@@ -474,7 +474,6 @@ out:
474 474
475unsigned long get_wchan(struct task_struct *p) 475unsigned long get_wchan(struct task_struct *p)
476{ 476{
477 unsigned long schedule_frame;
478 unsigned long pc; 477 unsigned long pc;
479 478
480 if (!p || p == current || p->state == TASK_RUNNING) 479 if (!p || p == current || p->state == TASK_RUNNING)
@@ -484,10 +483,13 @@ unsigned long get_wchan(struct task_struct *p)
484 * The same comment as on the Alpha applies here, too ... 483 * The same comment as on the Alpha applies here, too ...
485 */ 484 */
486 pc = thread_saved_pc(p); 485 pc = thread_saved_pc(p);
486
487#ifdef CONFIG_FRAME_POINTER
487 if (in_sched_functions(pc)) { 488 if (in_sched_functions(pc)) {
488 schedule_frame = (unsigned long)p->thread.sp; 489 unsigned long schedule_frame = (unsigned long)p->thread.sp;
489 return ((unsigned long *)schedule_frame)[21]; 490 return ((unsigned long *)schedule_frame)[21];
490 } 491 }
492#endif
491 493
492 return pc; 494 return pc;
493} 495}