diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-10-02 12:43:15 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-10-16 02:50:22 +0400 |
| commit | 77db50c4eb1991d6e88254390ec368e1d23a8fa5 (patch) | |
| tree | eb0b2c9a8436be57c25422dcb65609702210a3f0 /drivers/cpufreq/freq_table.c | |
| parent | 27a862e98341226a50835f29aa26ffa528215ecc (diff) | |
| download | linux-77db50c4eb1991d6e88254390ec368e1d23a8fa5.tar.xz | |
cpufreq: Optimize cpufreq_frequency_table_verify()
cpufreq_frequency_table_verify() is rewritten here to make it more logical
and efficient.
- merge multiple lines for variable declarations together.
- quit early if any frequency between min/max is found.
- don't call cpufreq_verify_within_limits() in case any valid freq is
found as it is of no use.
- rename the count variable as found and change its type to boolean.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/freq_table.c')
| -rw-r--r-- | drivers/cpufreq/freq_table.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c index 11f6fa92a58d..10f3cfb6b513 100644 --- a/drivers/cpufreq/freq_table.c +++ b/drivers/cpufreq/freq_table.c @@ -54,9 +54,8 @@ EXPORT_SYMBOL_GPL(cpufreq_frequency_table_cpuinfo); int cpufreq_frequency_table_verify(struct cpufreq_policy *policy, struct cpufreq_frequency_table *table) { - unsigned int next_larger = ~0; - unsigned int i; - unsigned int count = 0; + unsigned int next_larger = ~0, freq, i = 0; + bool found = false; pr_debug("request for verification of policy (%u - %u kHz) for cpu %u\n", policy->min, policy->max, policy->cpu); @@ -64,21 +63,23 @@ int cpufreq_frequency_table_verify(struct cpufreq_policy *policy, cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq, policy->cpuinfo.max_freq); - for (i = 0; (table[i].frequency != CPUFREQ_TABLE_END); i++) { - unsigned int freq = table[i].frequency; + for (; freq = table[i].frequency, freq != CPUFREQ_TABLE_END; i++) { if (freq == CPUFREQ_ENTRY_INVALID) continue; - if ((freq >= policy->min) && (freq <= policy->max)) - count++; - else if ((next_larger > freq) && (freq > policy->max)) + if ((freq >= policy->min) && (freq <= policy->max)) { + found = true; + break; + } + + if ((next_larger > freq) && (freq > policy->max)) next_larger = freq; } - if (!count) + if (!found) { policy->max = next_larger; - - cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq, - policy->cpuinfo.max_freq); + cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq, + policy->cpuinfo.max_freq); + } pr_debug("verification lead to (%u - %u kHz) for cpu %u\n", policy->min, policy->max, policy->cpu); |