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[PATCH] SysRq-X: show blocked tasks

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Add SysRq-X support: show blocked (TASK_UNINTERRUPTIBLE) tasks only.

Useful for debugging IO stalls.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar 2006-12-06 20:35:59 -08:00 • committed by Linus Torvalds
commit e59e2ae2c2
3 changed files with 31 additions and 5 deletions
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11
include/linux/sched.h
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@ -194,7 +194,16 @@ extern void init_idle(struct task_struct *idle, int cpu);
extern cpumask_t nohz_cpu_mask;
extern void show_state(void);
/*
* Only dump TASK_* tasks. (-1 for all tasks)
*/
extern void show_state_filter(unsigned long state_filter);
static inline void show_state(void)
{
show_state_filter(-1);
}
extern void show_regs(struct pt_regs *);
/*