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* [PATCH v2 0/1] multi-threading device shutdown
@ 2018-05-05 15:40 Pavel Tatashin
  2018-05-05 15:40 ` [PATCH v2 1/1] drivers core: " Pavel Tatashin
  0 siblings, 1 reply; 6+ messages in thread
From: Pavel Tatashin @ 2018-05-05 15:40 UTC (permalink / raw)
  To: pasha.tatashin, steven.sistare, daniel.m.jordan, linux-kernel,
	jeffrey.t.kirsher, intel-wired-lan, netdev, gregkh,
	alexander.duyck, tobin

Changelog

v1 - v2
	- It turns out we cannot lock more than MAX_LOCK_DEPTH by a single
	  thread. (By default this value is 48), and is used to detect
	  deadlocks. So, I re-wrote the code to only lock one devices per
	  thread instead of pre-locking all devices by the main thread.
	- Addressed comments from Tobin C. Harding.
	- As suggested by Alexander Duyck removed ixgbe changes. It can be
	  done as a separate work scaling RTNL mutex.

Do a faster shutdown by calling dev->*->shutdown(dev) in parallel.
device_shutdown() calls these functions for every single device but
only using one thread.

Since, nothing else is running on the machine by the device_shutdown()
s called, there is no reason not to utilize all the available CPU
resources.

Pavel Tatashin (1):
  drivers core: multi-threading device shutdown

 drivers/base/core.c | 275 ++++++++++++++++++++++++++++++++++++--------
 1 file changed, 225 insertions(+), 50 deletions(-)

-- 
2.17.0

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2018-05-23 11:32 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-05-05 15:40 [PATCH v2 0/1] multi-threading device shutdown Pavel Tatashin
2018-05-05 15:40 ` [PATCH v2 1/1] drivers core: " Pavel Tatashin
2018-05-06  1:56   ` [Intel-wired-lan] " kbuild test robot
2018-05-06  1:56   ` [RFC PATCH] drivers core: device_root_tasks_done can be static kbuild test robot
2018-05-23 10:40   ` [PATCH v2 1/1] drivers core: multi-threading device shutdown Pavel Machek
2018-05-23 11:31     ` Pavel Tatashin

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