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authorDaniel Lezcano <daniel.lezcano@linaro.org>2013-01-15 14:18:04 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-01-15 14:18:04 +0100
commit8aef33a7cf40ca9da188e8578b2abe7267a38c52 (patch)
tree4f0908d2b007ad3f372ffeeaca624cfe81afdf47 /include
parenta412a11d6a24aebb6a898ed5d4e1c0725b638da3 (diff)
downloadlinux-8aef33a7cf40ca9da188e8578b2abe7267a38c52.tar.gz
cpuidle: remove the power_specified field in the driver
We realized that the power usage field is never filled and when it is filled for tegra, the power_specified flag is not set causing all of these values to be reset when the driver is initialized with set_power_state(). However, the power_specified flag can be simply removed under the assumption that the states are always backward sorted, which is the case with the current code. This change allows the menu governor select function and the cpuidle_play_dead() to be simplified. Moreover, the set_power_states() function can removed as it does not make sense any more. Drop the power_specified flag from struct cpuidle_driver and make the related changes as described above. As a consequence, this also fixes the bug where on the dynamic C-states system, the power fields are not initialized. [rjw: Changelog] References: https://bugzilla.kernel.org/show_bug.cgi?id=42870 References: https://bugzilla.kernel.org/show_bug.cgi?id=43349 References: https://lkml.org/lkml/2012/10/16/518 Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/cpuidle.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 3711b34dc4f..24cd1037b6d 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -126,9 +126,9 @@ struct cpuidle_driver {
struct module *owner;
int refcnt;
- unsigned int power_specified:1;
/* set to 1 to use the core cpuidle time keeping (for all states). */
unsigned int en_core_tk_irqen:1;
+ /* states array must be ordered in decreasing power consumption */
struct cpuidle_state states[CPUIDLE_STATE_MAX];
int state_count;
int safe_state_index;