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cpufreq: governor: Clean up load-related computations
Clean up some load-related computations in dbs_check_cpu() and cpufreq_governor_start() to get rid of unnecessary operations and type casts and make the code easier to read. No functional changes. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
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@ -186,16 +186,15 @@ void dbs_check_cpu(struct cpufreq_policy *policy)
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io_busy = od_tuners->io_is_busy;
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cur_idle_time = get_cpu_idle_time(j, &cur_wall_time, io_busy);
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wall_time = (unsigned int)
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(cur_wall_time - j_cdbs->prev_cpu_wall);
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wall_time = cur_wall_time - j_cdbs->prev_cpu_wall;
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j_cdbs->prev_cpu_wall = cur_wall_time;
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if (cur_idle_time < j_cdbs->prev_cpu_idle)
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cur_idle_time = j_cdbs->prev_cpu_idle;
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idle_time = (unsigned int)
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(cur_idle_time - j_cdbs->prev_cpu_idle);
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if (cur_idle_time <= j_cdbs->prev_cpu_idle) {
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idle_time = 0;
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} else {
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idle_time = cur_idle_time - j_cdbs->prev_cpu_idle;
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j_cdbs->prev_cpu_idle = cur_idle_time;
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}
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if (ignore_nice) {
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u64 cur_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE];
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@ -562,13 +561,10 @@ static int cpufreq_governor_start(struct cpufreq_policy *policy)
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struct cpu_dbs_info *j_cdbs = gov->get_cpu_cdbs(j);
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unsigned int prev_load;
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j_cdbs->prev_cpu_idle =
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get_cpu_idle_time(j, &j_cdbs->prev_cpu_wall, io_busy);
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j_cdbs->prev_cpu_idle = get_cpu_idle_time(j, &j_cdbs->prev_cpu_wall, io_busy);
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prev_load = (unsigned int)(j_cdbs->prev_cpu_wall -
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j_cdbs->prev_cpu_idle);
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j_cdbs->prev_load = 100 * prev_load /
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(unsigned int)j_cdbs->prev_cpu_wall;
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prev_load = j_cdbs->prev_cpu_wall - j_cdbs->prev_cpu_idle;
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j_cdbs->prev_load = 100 * prev_load / (unsigned int)j_cdbs->prev_cpu_wall;
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if (ignore_nice)
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j_cdbs->prev_cpu_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE];
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