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On Fri, 2007-08-17 at 12:49 -0700, Paul E. McKenney wrote: > > > What about reading values modified in interrupt handlers, as in your > > > "random" case? Or is this a bug where the user of atomic_read() is > > > invalidly expecting a read each time it is called? > > > > the interrupt handler case is an SMP case since you do not know > > beforehand what cpu your interrupt handler will run on. > > With the exception of per-CPU variables, yes. if you're spinning waiting for a per-CPU variable to get changed by an interrupt handler... you have bigger problems than "volatile" ;-) -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org - 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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