Re: [PATCH] cpufreq: Avoid calling cpufreq driver's target() routine if target_freq == policy->cur

On Friday, October 26, 2012 03:06:26 PM Viresh Kumar wrote:

Avoid calling cpufreq driver's target() routine if new frequency is same as policies current frequency.

Signed-off-by: Viresh Kumar viresh.kumar@linaro.org

Looks reasonable.

Any objection from anyone?

Rafael

---

drivers/cpufreq/cpufreq.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 261ef65..28dc134 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1476,6 +1476,10 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy, pr_debug("target for CPU %u: %u kHz, relation %u\n", policy->cpu, target_freq, relation);

• if (target_freq == policy->cur)

• return 0;
  

• if (cpu_online(policy->cpu) && cpufreq_driver->target) retval = cpufreq_driver->target(policy, target_freq, relation);