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authorKamil Konieczny <k.konieczny@samsung.com>2019-12-06 05:46:39 +0100
committerChanwoo Choi <cw00.choi@samsung.com>2019-12-30 01:59:05 +0100
commit1ebd0bc0e8adbfa548335d016ead922cc85fcecd (patch)
tree486156c8cecd6a122158753788a7b9da76c0aee9 /drivers/devfreq/devfreq.c
parentPM / devfreq: Add clearing transitions stats (diff)
downloadlinux-1ebd0bc0e8adbfa548335d016ead922cc85fcecd.tar.xz
linux-1ebd0bc0e8adbfa548335d016ead922cc85fcecd.zip
PM / devfreq: Move statistics to separate struct devfreq_stats
Count time and transitions between devfreq frequencies in separate struct devfreq_stats for improved code readability and maintenance. Signed-off-by: Kamil Konieczny <k.konieczny@samsung.com> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> [cw00.choi: Fix the merge conflict in trasn_stat_store and use 'devfreq->stats.*' style for consistent coding style and restore the clean-up code of 'devfreq->profile->*'] Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq/devfreq.c')
-rw-r--r--drivers/devfreq/devfreq.c44
1 files changed, 23 insertions, 21 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index af5bd521a734..0828988ce263 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -224,8 +224,8 @@ int devfreq_update_status(struct devfreq *devfreq, unsigned long freq)
goto out;
}
- devfreq->time_in_state[prev_lev] +=
- cur_time - devfreq->last_stat_updated;
+ devfreq->stats.time_in_state[prev_lev] +=
+ cur_time - devfreq->stats.last_update;
lev = devfreq_get_freq_level(devfreq, freq);
if (lev < 0) {
@@ -234,13 +234,13 @@ int devfreq_update_status(struct devfreq *devfreq, unsigned long freq)
}
if (lev != prev_lev) {
- devfreq->trans_table[(prev_lev *
- devfreq->profile->max_state) + lev]++;
- devfreq->total_trans++;
+ devfreq->stats.trans_table[
+ (prev_lev * devfreq->profile->max_state) + lev]++;
+ devfreq->stats.total_trans++;
}
out:
- devfreq->last_stat_updated = cur_time;
+ devfreq->stats.last_update = cur_time;
return ret;
}
EXPORT_SYMBOL(devfreq_update_status);
@@ -535,7 +535,7 @@ void devfreq_monitor_resume(struct devfreq *devfreq)
msecs_to_jiffies(devfreq->profile->polling_ms));
out_update:
- devfreq->last_stat_updated = get_jiffies_64();
+ devfreq->stats.last_update = get_jiffies_64();
devfreq->stop_polling = false;
if (devfreq->profile->get_cur_freq &&
@@ -807,28 +807,29 @@ struct devfreq *devfreq_add_device(struct device *dev,
goto err_out;
}
- devfreq->trans_table = devm_kzalloc(&devfreq->dev,
+ devfreq->stats.trans_table = devm_kzalloc(&devfreq->dev,
array3_size(sizeof(unsigned int),
devfreq->profile->max_state,
devfreq->profile->max_state),
GFP_KERNEL);
- if (!devfreq->trans_table) {
+ if (!devfreq->stats.trans_table) {
mutex_unlock(&devfreq->lock);
err = -ENOMEM;
goto err_devfreq;
}
- devfreq->time_in_state = devm_kcalloc(&devfreq->dev,
+ devfreq->stats.time_in_state = devm_kcalloc(&devfreq->dev,
devfreq->profile->max_state,
- sizeof(*devfreq->time_in_state),
+ sizeof(*devfreq->stats.time_in_state),
GFP_KERNEL);
- if (!devfreq->time_in_state) {
+ if (!devfreq->stats.time_in_state) {
mutex_unlock(&devfreq->lock);
err = -ENOMEM;
goto err_devfreq;
}
- devfreq->last_stat_updated = get_jiffies_64();
+ devfreq->stats.total_trans = 0;
+ devfreq->stats.last_update = get_jiffies_64();
srcu_init_notifier_head(&devfreq->transition_notifier_list);
@@ -1588,13 +1589,14 @@ static ssize_t trans_stat_show(struct device *dev,
devfreq->profile->freq_table[i]);
for (j = 0; j < max_state; j++)
len += sprintf(buf + len, "%10u",
- devfreq->trans_table[(i * max_state) + j]);
+ devfreq->stats.trans_table[(i * max_state) + j]);
+
len += sprintf(buf + len, "%10llu\n", (u64)
- jiffies64_to_msecs(devfreq->time_in_state[i]));
+ jiffies64_to_msecs(devfreq->stats.time_in_state[i]));
}
len += sprintf(buf + len, "Total transition : %u\n",
- devfreq->total_trans);
+ devfreq->stats.total_trans);
return len;
}
@@ -1613,13 +1615,13 @@ static ssize_t trans_stat_store(struct device *dev,
return -EINVAL;
mutex_lock(&df->lock);
- memset(df->time_in_state, 0, (df->profile->max_state *
- sizeof(*df->time_in_state)));
- memset(df->trans_table, 0, array3_size(sizeof(unsigned int),
+ memset(df->stats.time_in_state, 0, (df->profile->max_state *
+ sizeof(*df->stats.time_in_state)));
+ memset(df->stats.trans_table, 0, array3_size(sizeof(unsigned int),
df->profile->max_state,
df->profile->max_state));
- df->total_trans = 0;
- df->last_stat_updated = get_jiffies_64();
+ df->stats.total_trans = 0;
+ df->stats.last_update = get_jiffies_64();
mutex_unlock(&df->lock);
return count;