Revision 42b5212fee4f57907e9415b18fe19c13e65574bc authored by David Vrabel on 02 February 2015, 16:57:51 UTC, committed by David S. Miller on 03 February 2015, 03:39:04 UTC
After commit e9d8b2c2968499c1f96563e6522c56958d5a1d0d (xen-netback:
disable rogue vif in kthread context), a fatal (protocol) error would
leave the guest Rx thread spinning, wasting CPU time.  Commit
ecf08d2dbb96d5a4b4bcc53a39e8d29cc8fef02e (xen-netback: reintroduce
guest Rx stall detection) made this even worse by removing a
cond_resched() from this path.

Since a fatal error is non-recoverable, just allow the guest Rx thread
to exit.  This requires taking additional refs to the task so the
thread exiting early is handled safely.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reported-by: Julien Grall <julien.grall@linaro.org>
Tested-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent 5a2e87b
Raw File
00-INDEX
00-INDEX
	- This file
leds-blinkm.txt
	- Driver for BlinkM LED-devices.
leds-class.txt
	- documents LED handling under Linux.
leds-lp3944.txt
	- notes on how to use the leds-lp3944 driver.
leds-lp5521.txt
	- notes on how to use the leds-lp5521 driver.
leds-lp5523.txt
	- notes on how to use the leds-lp5523 driver.
leds-lp5562.txt
	- notes on how to use the leds-lp5562 driver.
leds-lp55xx.txt
	- description about lp55xx common driver.
leds-lm3556.txt
	- notes on how to use the leds-lm3556 driver.
ledtrig-oneshot.txt
	- One-shot LED trigger for both sporadic and dense events.
ledtrig-transient.txt
	- LED Transient Trigger, one shot timer activation.
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