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SubjectRe: psmouse.c, throwing 3 bytes away
Date
Em Qui 05 Fev 2004 20:59, você escreveu:
> The exception seems to be coming from
> linux-2.6.2/drivers/input/mouse/psmouse-base.c, specifically from
>
> if (psmouse->state == PSMOUSE_ACTIVATED &&
> psmouse->pktcnt && time_after(jiffies, psmouse->last +
> HZ/2)) {
> printk(KERN_WARNING "psmouse.c: %s at %s lost
> synchronization, throwing %d bytes away.\n",
> psmouse->name, psmouse->phys, psmouse->pktcnt);
> psmouse->pktcnt = 0;
> }
>
>
> where (for me) HZ is 1804768000, and therefore HZ/2 is 902384000,
> psmouse->pktcnt is 3, and (I assume) PSMOUSE_ACTIVATED is non-0 after
> boot. I assume that pktcnt is fed by interrupt, and the problem then is
> that psmouse->last + HZ/2 blows past the jiffies value, causing the
> warning message to be issued. When mouse service finally comes back,
> pktcnt is non-zero (and possibly whatever the maximum is that it will
> hold), and when it flushes, the mouse pointer goes nuts for a second.
> The real problem then, is why does the sum of ps->last + HZ/2 grow to
> beyond the size of jiffies (or what is delaying the mouse service)?
>
> This is just a rough guesstimate of what is going on, but seems to fit
> the facts. Cheers!
>
> Bob
Always in heavy load(like c++ compiling, high volume of VM operations),
kernel jiffies are more large or short delay....
Bug is solved?
I am open to receive patchs for test!
Please send when avaliable!

Thanks







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