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    Subject[PATCH 2/3] cpufreq: schedutil: Pass sg_policy to get_next_freq()
    Date
    get_next_freq() uses sg_cpu only to get sg_policy, which the callers of
    get_next_freq() already have. Pass sg_policy instead of sg_cpu to
    get_next_freq(), to make it more efficient.

    Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
    ---
    kernel/sched/cpufreq_schedutil.c | 11 +++++------
    1 file changed, 5 insertions(+), 6 deletions(-)

    diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
    index 721f4e011366..570925ea7253 100644
    --- a/kernel/sched/cpufreq_schedutil.c
    +++ b/kernel/sched/cpufreq_schedutil.c
    @@ -115,7 +115,7 @@ static void sugov_update_commit(struct sugov_policy *sg_policy, u64 time,

    /**
    * get_next_freq - Compute a new frequency for a given cpufreq policy.
    - * @sg_cpu: schedutil cpu object to compute the new frequency for.
    + * @sg_policy: schedutil policy object to compute the new frequency for.
    * @util: Current CPU utilization.
    * @max: CPU capacity.
    *
    @@ -135,10 +135,9 @@ static void sugov_update_commit(struct sugov_policy *sg_policy, u64 time,
    * next_freq (as calculated above) is returned, subject to policy min/max and
    * cpufreq driver limitations.
    */
    -static unsigned int get_next_freq(struct sugov_cpu *sg_cpu, unsigned long util,
    - unsigned long max)
    +static unsigned int get_next_freq(struct sugov_policy *sg_policy,
    + unsigned long util, unsigned long max)
    {
    - struct sugov_policy *sg_policy = sg_cpu->sg_policy;
    struct cpufreq_policy *policy = sg_policy->policy;
    unsigned int freq = arch_scale_freq_invariant() ?
    policy->cpuinfo.max_freq : policy->cur;
    @@ -212,7 +211,7 @@ static void sugov_update_single(struct update_util_data *hook, u64 time,
    } else {
    sugov_get_util(&util, &max);
    sugov_iowait_boost(sg_cpu, &util, &max);
    - next_f = get_next_freq(sg_cpu, util, max);
    + next_f = get_next_freq(sg_policy, util, max);
    }
    sugov_update_commit(sg_policy, time, next_f);
    }
    @@ -266,7 +265,7 @@ static unsigned int sugov_next_freq_shared(struct sugov_cpu *sg_cpu,
    sugov_iowait_boost(j_sg_cpu, &util, &max);
    }

    - return get_next_freq(sg_cpu, util, max);
    + return get_next_freq(sg_policy, util, max);
    }

    static void sugov_update_shared(struct update_util_data *hook, u64 time,
    --
    2.7.1.410.g6faf27b
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