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authorViresh Kumar <viresh.kumar@linaro.org>2014-06-24 00:31:01 -0400
committerIngo Molnar <mingo@kernel.org>2014-07-05 05:17:31 -0400
commit89abb5ad10ae8ac3405e635ac80815f781c8b8e9 (patch)
tree13ef41930fadb7894ac92c953a078da8123f1d80
parent4036ac1567834222fc763ab18e3e17df93b4eaaf (diff)
sched/idle: Drop !! while calculating 'broadcast'
We don't need 'broadcast' to be set to 'zero or one', but to 'zero or non-zero' and so the extra operation to convert it to 'zero or one' can be skipped. Also change type of 'broadcast' to unsigned int, i.e. type of drv->states[*].flags. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: linaro-kernel@lists.linaro.org Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/0dfbe2976aa108c53e08d3477ea90f6360c1f54c.1403584026.git.viresh.kumar@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r--kernel/sched/idle.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c
index cf009fb0bc25..9f1608f99819 100644
--- a/kernel/sched/idle.c
+++ b/kernel/sched/idle.c
@@ -79,7 +79,7 @@ static void cpuidle_idle_call(void)
79 struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices); 79 struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices);
80 struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev); 80 struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
81 int next_state, entered_state; 81 int next_state, entered_state;
82 bool broadcast; 82 unsigned int broadcast;
83 83
84 /* 84 /*
85 * Check if the idle task must be rescheduled. If it is the 85 * Check if the idle task must be rescheduled. If it is the
@@ -135,7 +135,7 @@ use_default:
135 goto exit_idle; 135 goto exit_idle;
136 } 136 }
137 137
138 broadcast = !!(drv->states[next_state].flags & CPUIDLE_FLAG_TIMER_STOP); 138 broadcast = drv->states[next_state].flags & CPUIDLE_FLAG_TIMER_STOP;
139 139
140 /* 140 /*
141 * Tell the time framework to switch to a broadcast timer 141 * Tell the time framework to switch to a broadcast timer