On Mon, 8 Sep 2008 13:40:25 -0700 Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > On Thu, 04 Sep 2008 13:56:37 -0700 > Stephen Hemminger <shemminger@xxxxxxxxxx> wrote: > > > Accessing the VPD area can take a long time. The existing > > VPD access code fails consistently on my hardware. There are comments > > in the SysKonnect vendor driver that it can take up to 13ms per word. > > > > Change the access routines to: > > * use a mutex rather than spinning with IRQ's disabled and lock held > > * have a longer timeout > > * call schedule while spinning to provide some responsivness > > It doesn't call schedule() - it calls yield(). > > yield() is pretty notoriously badly behaved in the presence of lots of > runnable tasks and there's been a general move to eradicate its > in-kernel callsites. > > An alternative would be nice. What is a good way to say "i am polling for a while"? -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
