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cpufreq: Remove CONFIG_CPU_FREQ_STAT_DETAILS config option

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This doesn't have any benefit apart from saving a small amount of memory
when it is disabled. The ifdef hackery in the code makes it dirty
unnecessarily.

Clean it up by removing the Kconfig option completely. Few defconfigs
are also updated and CONFIG_CPU_FREQ_STAT_DETAILS is replaced with
CONFIG_CPU_FREQ_STAT now in them, as users wanted stats to be enabled.

Signed-off-by: Viresh Kumar <[email protected]>
Acked-by: Gregory CLEMENT <[email protected]>
Reviewed-by: Chanwoo Choi <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Viresh Kumar 2017-01-05 13:57:41 +05:30 • committed by Rafael J. Wysocki
commit 801e0f378f
11 changed files with 7 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

8
drivers/cpufreq/Kconfig
View file

@ -37,14 +37,6 @@ config CPU_FREQ_STAT
If in doubt, say N.
config CPU_FREQ_STAT_DETAILS
bool "CPU frequency transition statistics details"
depends on CPU_FREQ_STAT
help
Show detailed CPU frequency transition table in sysfs.
If in doubt, say N.
choice
prompt "Default CPUFreq governor"
default CPU_FREQ_DEFAULT_GOV_USERSPACE if ARM_SA1100_CPUFREQ || ARM_SA1110_CPUFREQ

14
drivers/cpufreq/cpufreq_stats.c
View file

@ -25,9 +25,7 @@ struct cpufreq_stats {
unsigned int last_index;
u64 *time_in_state;
unsigned int *freq_table;
#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
unsigned int *trans_table;
#endif
};
static int cpufreq_stats_update(struct cpufreq_stats *stats)
@ -46,9 +44,7 @@ static void cpufreq_stats_clear_table(struct cpufreq_stats *stats)
unsigned int count = stats->max_state;
memset(stats->time_in_state, 0, count * sizeof(u64));
#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
memset(stats->trans_table, 0, count * count * sizeof(int));
#endif
stats->last_time = get_jiffies_64();
stats->total_trans = 0;
}
@ -84,7 +80,6 @@ static ssize_t store_reset(struct cpufreq_policy *policy, const char *buf,
return count;
}
#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
static ssize_t show_trans_table(struct cpufreq_policy *policy, char *buf)
{
struct cpufreq_stats *stats = policy->stats;
@ -129,7 +124,6 @@ static ssize_t show_trans_table(struct cpufreq_policy *policy, char *buf)
return len;
}
cpufreq_freq_attr_ro(trans_table);
#endif
cpufreq_freq_attr_ro(total_trans);
cpufreq_freq_attr_ro(time_in_state);
@ -139,9 +133,7 @@ static struct attribute *default_attrs[] = {
&total_trans.attr,
&time_in_state.attr,
&reset.attr,
#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
&trans_table.attr,
#endif
NULL
};
static struct attribute_group stats_attr_group = {
@ -200,9 +192,7 @@ void cpufreq_stats_create_table(struct cpufreq_policy *policy)
alloc_size = count * sizeof(int) + count * sizeof(u64);
#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
alloc_size += count * count * sizeof(int);
#endif
/* Allocate memory for time_in_state/freq_table/trans_table in one go */
stats->time_in_state = kzalloc(alloc_size, GFP_KERNEL);
@ -211,9 +201,7 @@ void cpufreq_stats_create_table(struct cpufreq_policy *policy)
stats->freq_table = (unsigned int *)(stats->time_in_state + count);
#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
stats->trans_table = stats->freq_table + count;
#endif
stats->max_state = count;
@ -259,8 +247,6 @@ void cpufreq_stats_record_transition(struct cpufreq_policy *policy,
cpufreq_stats_update(stats);
stats->last_index = new_index;
#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
stats->trans_table[old_index * stats->max_state + new_index]++;
#endif
stats->total_trans++;
}