Messages in this thread | | | Date | Fri, 4 Mar 2005 23:57:10 +0100 | From | Pavel Machek <> | Subject | Re: [PATCH/RFC] I/O-check interface for driver's error handling |
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Hi!
> > Hmm, before we go async way (nasty locking, no?) could driver simply > > ask "did something bad happen while I was sleeping?" at begining of each > > function? > > > > For DMA problems, driver probably has its own, timer-based, > > "something is wrong" timer, anyway, no? > > No, there is no nasty locking, when the callback happens, pretty much > all IOs have stopped anyway due to errors, and we aren't on a critical > code path.
What prevents driver from being run on another CPU, maybe just doing mdelay() between hardware accesses?
Pavel -- People were complaining that M$ turns users into beta-testers... ...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl! - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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