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ARC: Add support for irqflags tracing and lockdep

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Lockdep required a small fix to stacktrace API which was incorrectly
unwindign out of __switch_to for the current call frame.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta
2013-09-06 14:18:17 +05:30
parent 54c8bff14d
commit 0dafafc3ef
4 changed files with 42 additions and 1 deletions
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4
arch/arc/kernel/stacktrace.c
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@@ -237,11 +237,13 @@ unsigned int get_wchan(struct task_struct *tsk)
*/
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
/* Assumes @tsk is sleeping so unwinds from __switch_to */
arc_unwind_core(tsk, NULL, __collect_all_but_sched, trace);
}
void save_stack_trace(struct stack_trace *trace)
{
arc_unwind_core(current, NULL, __collect_all, trace);
/* Pass NULL for task so it unwinds the current call frame */
arc_unwind_core(NULL, NULL, __collect_all, trace);
}
#endif