From: Len Brown <lenb@kernel.org>
To: linux-pm@vger.kernel.org, linux-acpi@vger.kernel.org
Subject: cpuidle: remove CPUIDLE_FLAG_TIME_INVALID
Date: Tue, 16 Dec 2014 01:52:05 -0500 [thread overview]
Message-ID: <1418712728-2193-1-git-send-email-lenb@kernel.org> (raw)
Daniel Lezcano suggested removing CPUIDLE_FLAG_TIME_INVALID because
no states enable interrupts, and so cpuidle can always measure valid
residency time. That turns out not to be un-true since x86 HALT is
invoked with interrupts enabled. But looking at the code more closely,
Daniel's suggestion of simply removing the CPUIDLE_FLAG_TIME_INVALID
is actually an improvement over the workaround that we are currently using.
next reply other threads:[~2014-12-16 6:52 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-16 6:52 Len Brown [this message]
2014-12-16 6:52 ` [PATCH 1/3] cpuidle menu: Better idle duration measurement without using CPUIDLE_FLAG_TIME_INVALID Len Brown
2014-12-16 6:52 ` [PATCH 2/3] cpuidle ladder: " Len Brown
2014-12-16 11:07 ` Daniel Lezcano
2014-12-16 6:52 ` [PATCH 3/3] cpuidle, ACPI: remove unused CPUIDLE_FLAG_TIME_INVALID Len Brown
2014-12-16 11:08 ` Daniel Lezcano
2014-12-17 0:28 ` Rafael J. Wysocki
2014-12-16 10:57 ` [PATCH 1/3] cpuidle menu: Better idle duration measurement without using CPUIDLE_FLAG_TIME_INVALID Daniel Lezcano
2014-12-16 21:09 ` Tuukka Tikkanen
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