Commit d36c4857 authored May 19, 2017 by Sameer Wadgaonkar Committed by Greg Kroah-Hartman May 25, 2017

staging: unisys: visorbus: add comment to explain polling logic in controlvm_periodic_work



Added a comment to explain polling frequency variation logic in
controlvm_periodic_logic() in visorchipset.c.

Signed-off-by: Sameer Wadgaonkar <sameer.wadgaonkar@unisys.com>
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 172f4c36

drivers/staging/unisys/visorbus/visorchipset.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -1787,6 +1787,11 @@ controlvm_periodic_work(struct work_struct *work)
		/* parahotplug_worker */
		parahotplug_process_list();

		/*
		* The controlvm messages are sent in a bulk. If we start receiving messages, we
		* want the polling to be fast. If we do not receive any message for
		* MIN_IDLE_SECONDS, we can slow down the polling.
		*/
		schedule_out:
		if (time_after(jiffies, chipset_dev->most_recent_message_jiffies +
		(HZ * MIN_IDLE_SECONDS))) {