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. -- 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
