On Thursday 27 June 2002 09:03 am, anton wilson wrote:
> I'm running linux 2.4.17 and Redhat 7.2 with the preemptive and low latency
> patches, and whenever I stick printks in the scheduler(void) my system
> freezes somewhere after it tries to load the system font. Where it stops
> seems to be random. I can only run under single user mode without my system
> freezing. Does anyone have any clues why? Or any better ways to go about
> tracking the scheduling of processes in the scheduler?
Something I have used in my testing:
Add, in the task structure:
task_t *sched_from;
In schedule, prior to context_switch:
next->sched_from = prior; /* at this point still == get_current ()*/
Somewhere else (so you don't inadvertantly side-effect to death schedule()):
Follow the back-link and printk whatever for the task that you are interested
in, being careful not to reference task structures that no longer exist.
Mike
>
>
> Anton
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This archive was generated by hypermail 2b29 : Sun Jun 30 2002 - 22:00:13 EST