* schedule() and mipsel processor
@ 2003-06-28 2:57 fpga dsp
2003-06-29 17:35 ` Ralf Baechle
2003-06-30 17:00 ` Jun Sun
0 siblings, 2 replies; 3+ messages in thread
From: fpga dsp @ 2003-06-28 2:57 UTC (permalink / raw)
To: linux-mips
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Hi all,
I may ask a stupid question here but I have problem of calling any functions such as interruptible_sleep_on_timeout, sleep_on ... in a timer handler, the kernel just crash straight away in the function schedule(). Now I go and do a diff between kern/sched.c on i686 source and mipsel source. clearly , they are different. So the question is from kernel programming point of view, the bottom-half of interrupt handler is still considered interrupt handler? I don't see any platform dependent code in the scheduler at all. So why a mips scheduler is different from intel scheduler ?
Many thanks
Duy Do
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: schedule() and mipsel processor
2003-06-28 2:57 schedule() and mipsel processor fpga dsp
@ 2003-06-29 17:35 ` Ralf Baechle
2003-06-30 17:00 ` Jun Sun
1 sibling, 0 replies; 3+ messages in thread
From: Ralf Baechle @ 2003-06-29 17:35 UTC (permalink / raw)
To: fpga dsp; +Cc: linux-mips
On Sat, Jun 28, 2003 at 12:57:49PM +1000, fpga dsp wrote:
> I may ask a stupid question here but I have problem of calling any functions such as interruptible_sleep_on_timeout, sleep_on ... in a timer handler, the kernel just crash straight away in the function schedule(). Now I go and do a diff between kern/sched.c on i686 source and mipsel source. clearly , they are different. So the question is from kernel programming point of view, the bottom-half of interrupt handler is still considered interrupt handler? I don't see any platform dependent code in the scheduler at all. So why a mips scheduler is different from intel scheduler ?
Bs. There was no need to change kernel/sched.c at all so you're probably
simply diffing the wrong versions.
Ralf
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: schedule() and mipsel processor
2003-06-28 2:57 schedule() and mipsel processor fpga dsp
2003-06-29 17:35 ` Ralf Baechle
@ 2003-06-30 17:00 ` Jun Sun
1 sibling, 0 replies; 3+ messages in thread
From: Jun Sun @ 2003-06-30 17:00 UTC (permalink / raw)
To: fpga dsp; +Cc: linux-mips, jsun
On Sat, Jun 28, 2003 at 12:57:49PM +1000, fpga dsp wrote:
> Hi all,
>
> I may ask a stupid question here but I have problem of calling any functions such as interruptible_sleep_on_timeout, sleep_on ... in a timer handler, the kernel just crash straight away in the function schedule(). Now I go and do a diff between kern/sched.c on i686 source and mipsel source. clearly , they are different. So the question is from kernel programming point of view, the bottom-half of interrupt handler is still considered interrupt handler?
Correct. You can't call those sleep functions from timer function.
Jun
^ permalink raw reply [flat|nested] 3+ messages in thread
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2003-06-28 2:57 schedule() and mipsel processor fpga dsp
2003-06-29 17:35 ` Ralf Baechle
2003-06-30 17:00 ` Jun Sun
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