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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-01-04 23:10:38 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-01-04 23:10:38 +0100
commit3eef2455f350708269fe42fab07b8c73efca83dc (patch)
tree839e3585507d0bcceb8d4bdfff7dad56547fda22 /drivers
parentf3fe8bd7b114d88c802616a98a0cf69299c37ed3 (diff)
parentac34d7c8c87c247db0270285950753da045acaad (diff)
downloadlinux-3eef2455f350708269fe42fab07b8c73efca83dc.tar.bz2
Merge branch 'pm-cpuidle'
By Sivaram Nair (2) and others * pm-cpuidle: cpuidle: fix lock contention in the idle path intel_idle: pr_debug information need separated cpuidle / coupled: fix ready counter decrement cpuidle: Fix finding state with min power_usage
Diffstat (limited to 'drivers')
-rw-r--r--drivers/cpuidle/coupled.c2
-rw-r--r--drivers/cpuidle/cpuidle.c2
-rw-r--r--drivers/cpuidle/driver.c8
-rw-r--r--drivers/cpuidle/governors/menu.c2
-rw-r--r--drivers/idle/intel_idle.c2
5 files changed, 5 insertions, 11 deletions
diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c
index 3265844839bf..2a297f86dbad 100644
--- a/drivers/cpuidle/coupled.c
+++ b/drivers/cpuidle/coupled.c
@@ -209,7 +209,7 @@ inline int cpuidle_coupled_set_not_ready(struct cpuidle_coupled *coupled)
int all;
int ret;
- all = coupled->online_count || (coupled->online_count << WAITING_BITS);
+ all = coupled->online_count | (coupled->online_count << WAITING_BITS);
ret = atomic_add_unless(&coupled->ready_waiting_counts,
-MAX_WAITING_CPUS, all);
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 8df53dd8dbe1..fb4a7dd57f94 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -70,7 +70,7 @@ int cpuidle_play_dead(void)
struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices);
struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
int i, dead_state = -1;
- int power_usage = -1;
+ int power_usage = INT_MAX;
if (!drv)
return -ENODEV;
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index 3af841fb397a..c2b281afe0ed 100644
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -235,16 +235,10 @@ EXPORT_SYMBOL_GPL(cpuidle_get_driver);
*/
struct cpuidle_driver *cpuidle_get_cpu_driver(struct cpuidle_device *dev)
{
- struct cpuidle_driver *drv;
-
if (!dev)
return NULL;
- spin_lock(&cpuidle_driver_lock);
- drv = __cpuidle_get_cpu_driver(dev->cpu);
- spin_unlock(&cpuidle_driver_lock);
-
- return drv;
+ return __cpuidle_get_cpu_driver(dev->cpu);
}
EXPORT_SYMBOL_GPL(cpuidle_get_cpu_driver);
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index bd40b943b6db..20ea33afdda1 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -312,7 +312,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
{
struct menu_device *data = &__get_cpu_var(menu_devices);
int latency_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY);
- int power_usage = -1;
+ int power_usage = INT_MAX;
int i;
int multiplier;
struct timespec t;
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index c49c04d9c2b0..4ba384f1ab54 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -506,7 +506,7 @@ static int intel_idle_cpuidle_driver_init(void)
if (*cpuidle_state_table[cstate].name == '\0')
pr_debug(PREFIX "unaware of model 0x%x"
" MWAIT %d please"
- " contact lenb@kernel.org",
+ " contact lenb@kernel.org\n",
boot_cpu_data.x86_model, cstate);
continue;
}