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authorDaniel Lezcano <daniel.lezcano@linaro.org>2013-06-08 01:53:09 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-06-11 15:42:38 +0400
commit82467a5a885ddd9f80309682159da8db510e7832 (patch)
treed9a9e624e2fa4eca666d05182fc362eb8ce95830 /include/linux/cpuidle.h
parentbd2a337a25dd22bcd6b3fb1f99461f6991773e68 (diff)
downloadlinux-82467a5a885ddd9f80309682159da8db510e7832.tar.xz
cpuidle: simplify multiple driver support
Commit bf4d1b5 (cpuidle: support multiple drivers) introduced support for using multiple cpuidle drivers at the same time. It added a couple of new APIs to register the driver per CPU, but that led to some unnecessary code complexity related to the kernel config options deciding whether or not the multiple driver support is enabled. The code has to work as it did before when the multiple driver support is not enabled and the multiple driver support has to be compatible with the previously existing API. Remove the new API, not used by any driver in the tree yet (but needed for the HMP cpuidle drivers that will be submitted soon), and add a new cpumask pointer to the cpuidle driver structure that will point to the mask of CPUs handled by the given driver. That will allow the cpuidle_[un]register_driver() API to be used for the multiple driver support along with the cpuidle_[un]register() functions added recently. [rjw: Changelog] Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/cpuidle.h')
-rw-r--r--include/linux/cpuidle.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 8f0406230a0a..0bc4b74668e9 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -111,6 +111,9 @@ struct cpuidle_driver {
struct cpuidle_state states[CPUIDLE_STATE_MAX];
int state_count;
int safe_state_index;
+
+ /* the driver handles the cpus in cpumask */
+ struct cpumask *cpumask;
};
#ifdef CONFIG_CPU_IDLE
@@ -135,9 +138,6 @@ extern void cpuidle_disable_device(struct cpuidle_device *dev);
extern int cpuidle_play_dead(void);
extern struct cpuidle_driver *cpuidle_get_cpu_driver(struct cpuidle_device *dev);
-extern int cpuidle_register_cpu_driver(struct cpuidle_driver *drv, int cpu);
-extern void cpuidle_unregister_cpu_driver(struct cpuidle_driver *drv, int cpu);
-
#else
static inline void disable_cpuidle(void) { }
static inline int cpuidle_idle_call(void) { return -ENODEV; }