On 05/12/2014 04:19 PM, Li, Aubrey wrote:
On 2014/5/12 22:08, Daniel Lezcano wrote:
On 05/05/2014 12:51 AM, Rafael J. Wysocki wrote:
From: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
If freeze_enter() is called, we want to bypass the current cpuidle
governor and always use the deepest available (that is, not disabled)
C-state, because we want to save as much energy as reasonably possible
then and runtime latency constraints don't matter at that point, since
the system is in a sleep state anyway.
Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
---
This is on top of https://patchwork.kernel.org/patch/4071541/ .
Wouldn't make sense to revisit play_dead instead ?
play_dead() is broken.
Even if it works, we still should rely on cpuidle driver to place the
CPUs into the deepest c-state, because there is no architectural way to
enter deepest c-state and what play_dead() does is a bad assumption.
Ok, let me rephrase it. Why not revisiting cpuidle_play_dead instead ?
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