On Mon, Apr 25, 2016 at 11:31:26PM -0700, Raghava Aditya Renukunta wrote: > aac_fib_send has a special function case for initial commands during > driver initialization using wait < 0(pseudo sync mode). In this case, > the command does not sleep but rather spins checking for timeout.This > loop is calls cpu_relax() in an attempt to allow other processes/threads > to use the CPU, but this function does not relinquish the CPU and so the > command will hog the processor. This was observed in a KDUMP > "crashkernel" and that prevented the "command thread" (which is > responsible for completing the command from being timed out) from > starting because it could not get the CPU. > > Fixed by replacing "cpu_relax()" call with "schedule()" > Cc: stable@xxxxxxxxxxxxxxx > > Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@xxxxxxxxxxxxx> Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx> -- Johannes Thumshirn Storage jthumshirn@xxxxxxx +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
