Commit 36fcb429 authored Dec 06, 2019 by Marcelo Tosatti Committed by Rafael J. Wysocki Dec 09, 2019

cpuidle: use first valid target residency as poll time



Commit 259231a0 ("cpuidle: add poll_limit_ns to cpuidle_device
structure") changed, by mistake, the target residency from the first
available sleep state to the last available sleep state (which should
be longer).

This might cause excessive polling.

Fixes: 259231a0 ("cpuidle: add poll_limit_ns to cpuidle_device structure")
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Cc: 5.4+ <stable@vger.kernel.org> # 5.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent e42617b8

drivers/cpuidle/cpuidle.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -382,6 +382,7 @@ u64 cpuidle_poll_time(struct cpuidle_driver *drv,
		continue;

		limit_ns = (u64)drv->states[i].target_residency_ns;
		break;
		}

		dev->poll_limit_ns = limit_ns;

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