On Wed, Nov 05, 2014 at 05:04:29PM +0530, Amitkumar Karwar wrote: > On some platforms, system goes out of memory during heavy > Rx traffic with our USB chipsets. > > In case of SDIO/PCIe, after receiving 50 packets in Rx queue > we stop processing interrupts till packets pending fall below > low threshold i.e 20. We don't have similar logic for USB, > so if host platform is slow, we would hit a case where firmware > keeps on pushing packets at high speed than driver/kernel can > process. > > We will stop submitting URBs for Rx data when pending packet > count reaches high threshold and restart them when enough > packets are consumed to solve the problem.
Other drivers and user activity can deplete memory. How does this patch solve the problem when dev_alloc_skb fails? I'm worried the underlying issue remains; handling out of memory. -- James Cameron http://quozl.linux.org.au/ -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
