[PATCH v2 0/2] staging: octeon-ethernet: IRQ handling fixes

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,

This is a second version of two patches sent earlier:
	http://marc.info/?t=138039800600001&r=1&w=2
	http://marc.info/?t=138039800600002&r=1&w=2

The patch 1 is changed so that it won't touch the init/probe path. The
driver will still fail if CPU0 is not around, but that was not accepted
to be a bug.

The patch 2 is unmodified.

Test cases for EdgeRouter Lite:

1)
	- Start pinging Octeon from a remote host with 1 second interval.
	- Wait 10 seconds.
	- Set /proc/irq/24/smp_affinity to 2.
	- Wait 10 seconds.
	- Quit ping.

	- Expected result:
		No packet loss reported.
	- Unexpected/failed result:
		Packet loss.

2)
	- Boot Octeon with kernel parameter "octeon-ethernet.max_rx_cpus=1".
	- Saturate the Octeon with external traffic (e.g. flood ping).

	- Expected result:
		Max 50% CPU time is consumed. Second core is available for
		other tasks.
	- Unexpected/failed result:
		100% CPU time is consumed. System is unresponsive.

Aaro Koskinen (2):
  staging: octeon-ethernet: allow to set IRQ smp_affinity freely
  staging: octeon-ethernet: allow to use only 1 CPU for packet
    processing

 drivers/staging/octeon/ethernet-rx.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

-- 
1.8.4.rc3

_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel




[Index of Archives]     [Linux Driver Backports]     [DMA Engine]     [Linux GPIO]     [Linux SPI]     [Video for Linux]     [Linux USB Devel]     [Linux Coverity]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]
  Powered by Linux