Re: [patch] preempt-timing-on-2.6.8-rc2-O2

[Lee Revell]

On Mon, 2004-08-02 at 06:51, Ingo Molnar wrote:
> Newest patch at:
> 
>  http://redhat.com/~mingo/voluntary-preempt/preempt-timing-on-2.6.8-rc2-O2
> 

I get a *lot* of these:

(swapper/0): 996us non-preemptible critical section violated 100 us
preempt threshold starting at schedule+0x55/0x5a0 and ending at
do_IRQ+0x110/0x180
 [<c0106717>] dump_stack+0x17/0x20
 [<c0113eec>] dec_preempt_count+0x3c/0x50
 [<c0107a20>] do_IRQ+0x110/0x180
 [<c01062d8>] common_interrupt+0x18/0x20
 [<c0104222>] cpu_idle+0x32/0x50
 [<c030a782>] start_kernel+0x1a2/0x1f0
 [<c010019f>] 0xc010019f

This has to be a false positive, because if there were really ~1ms
non-preemptible critical sections all over the place I would be getting
xruns.

Lee 

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