Hello,
i am inframed trace for irq14 bugging points.
> * Lee Revell <[email protected]> wrote:
> > It seems that either some code path really is forgetting to
> > re-enable interrupts, or there's a bug in the latency tracer.
> one question is, what do the kernel addresses visible in the first
> argument of asm_do_IRQ() correspond to:
> trace1:MyThread-153 0D..1 5977us+: asm_do_IRQ (c030c170 1a 0)
> trace1:MyThread-153 0D..1 15191us+: asm_do_IRQ (c030c1bc 1a 0)
> trace2: <idle>-0 0D..2 8822us+: asm_do_IRQ (c021da24 1a 0)
> trace2: <idle>-0 0Dn.2 8920us+: asm_do_IRQ (c021da24 b 0)
> trace3: top-169 0D..1 8802us+: asm_do_IRQ (c024e5fc 1a 0)
> trace4: insmod-185 0D..1 8794us+: asm_do_IRQ (c030c174 1a 0)
> trace5: dd-197 0D..1 8812us+: asm_do_IRQ (c02e4938 1a 0)
> trace6: kthread-11 0d..3 2670us+: asm_do_IRQ (c02fe2d0 1a 0)
> trace7:MyThread-95 0D..1 542us+: asm_do_IRQ (c02fe2d0 1a 0)
> trace7:MyThread-95 0D..1 9755us+: asm_do_IRQ (c02fe2d0 1a 0)
> i.e. what is c02fe2d0, c021da24, c02e4938, etc.?
> but it seems most of the latencies are printk related: one possibility
> is that something is doing a costly printk with preemption disabled.
> Ingo
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Kai "Ozgur" Geek
Network Engineer
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