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sched: SCHED_FIFO/SCHED_RR watchdog timer

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Introduce a new rlimit that allows the user to set a runtime timeout on
real-time tasks their slice. Once this limit is exceeded the task will receive
SIGXCPU.

So it measures runtime since the last sleep.

Input and ideas by Thomas Gleixner and Lennart Poettering.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
CC: Lennart Poettering <mzxreary@0pointer.de>
CC: Michael Kerrisk <mtk.manpages@googlemail.com>
CC: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2008-01-25 21:08:27 +01:00
committed by Ingo Molnar
parent fa717060f1
commit 78f2c7db60
4 changed files with 63 additions and 2 deletions
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include/linux/sched.h
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@@ -932,6 +932,7 @@ struct sched_entity {
struct sched_rt_entity {
struct list_head run_list;
unsigned int time_slice;
unsigned long timeout;
};
struct task_struct {