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authorViresh Kumar <viresh.kumar@linaro.org>2013-10-03 21:26:48 +0530
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-10-30 01:21:22 +0100
commitfb11c9c63f995afbe0e909f061d9866a722cb4bf (patch)
tree2a0f0fce4e7d3bd66cffe9d8282d5e618305b667 /drivers/cpuidle
parent9b29a86f04f87cdb9eaacadf2e2d33a55af1c7cc (diff)
downloadlinux-fb11c9c63f995afbe0e909f061d9866a722cb4bf.tar.bz2
cpuidle: reduce code duplication inside cpuidle_idle_call()
We are doing this twice in cpuidle_idle_call() routine: drv->states[next_state].flags & CPUIDLE_FLAG_TIMER_STOP Would be better if we actually store this in a local variable and use that. That reduces code duplication and likely makes this piece of code run faster (in case the compiler wasn't able to optimize it earlier) [rjw: Cast the result of bitwise AND to bool explicitly using !!] Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpuidle')
-rw-r--r--drivers/cpuidle/cpuidle.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 518b542cad54..86e805986d6f 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -118,6 +118,7 @@ int cpuidle_idle_call(void)
struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices);
struct cpuidle_driver *drv;
int next_state, entered_state;
+ bool broadcast;
if (off || !initialized)
return -ENODEV;
@@ -141,7 +142,9 @@ int cpuidle_idle_call(void)
trace_cpu_idle_rcuidle(next_state, dev->cpu);
- if (drv->states[next_state].flags & CPUIDLE_FLAG_TIMER_STOP)
+ broadcast = !!(drv->states[next_state].flags & CPUIDLE_FLAG_TIMER_STOP);
+
+ if (broadcast)
clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER,
&dev->cpu);
@@ -151,7 +154,7 @@ int cpuidle_idle_call(void)
else
entered_state = cpuidle_enter_state(dev, drv, next_state);
- if (drv->states[next_state].flags & CPUIDLE_FLAG_TIMER_STOP)
+ if (broadcast)
clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT,
&dev->cpu);