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| author |   Kamil Konieczny <k.konieczny@samsung.com> | 2019-12-05 15:55:25 +0100 |
|---|---|---|
| committer |   Chanwoo Choi <cw00.choi@samsung.com> | 2019-12-30 09:59:05 +0900 |
| commit | b76b3479dab948bea0a98b6d263eb56d8f358528 (patch) | |
| tree | 1776d78541d68b422b967741caace16ba7f20243 /drivers/devfreq | |
| parent | PM / devfreq: Add new name attribute for sysfs (diff) | |
| download | linux-dev-b76b3479dab948bea0a98b6d263eb56d8f358528.tar.xz linux-dev-b76b3479dab948bea0a98b6d263eb56d8f358528.zip | |
PM / devfreq: Change time stats to 64-bit
Change time stats counting to bigger type by using 64-bit jiffies.
This will make devfreq stats code look similar to cpufreq stats and
prevents overflow (for HZ = 1000 after 49.7 days).
Signed-off-by: Kamil Konieczny <k.konieczny@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq')
| -rw-r--r-- | drivers/devfreq/devfreq.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 07602083c743..554d155106a5 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -209,10 +209,10 @@ static int set_freq_table(struct devfreq *devfreq) int devfreq_update_status(struct devfreq *devfreq, unsigned long freq) { int lev, prev_lev, ret = 0; - unsigned long cur_time; + u64 cur_time; lockdep_assert_held(&devfreq->lock); - cur_time = jiffies; + cur_time = get_jiffies_64(); /* Immediately exit if previous_freq is not initialized yet. */ if (!devfreq->previous_freq) @@ -535,7 +535,7 @@ void devfreq_monitor_resume(struct devfreq *devfreq) msecs_to_jiffies(devfreq->profile->polling_ms)); out_update: - devfreq->last_stat_updated = jiffies; + devfreq->last_stat_updated = get_jiffies_64(); devfreq->stop_polling = false; if (devfreq->profile->get_cur_freq && @@ -820,7 +820,7 @@ struct devfreq *devfreq_add_device(struct device *dev, devfreq->time_in_state = devm_kcalloc(&devfreq->dev, devfreq->profile->max_state, - sizeof(unsigned long), + sizeof(*devfreq->time_in_state), GFP_KERNEL); if (!devfreq->time_in_state) { mutex_unlock(&devfreq->lock); @@ -828,7 +828,7 @@ struct devfreq *devfreq_add_device(struct device *dev, goto err_devfreq; } - devfreq->last_stat_updated = jiffies; + devfreq->last_stat_updated = get_jiffies_64(); srcu_init_notifier_head(&devfreq->transition_notifier_list); @@ -1589,8 +1589,8 @@ static ssize_t trans_stat_show(struct device *dev, for (j = 0; j < max_state; j++) len += sprintf(buf + len, "%10u", devfreq->trans_table[(i * max_state) + j]); - len += sprintf(buf + len, "%10u\n", - jiffies_to_msecs(devfreq->time_in_state[i])); + len += sprintf(buf + len, "%10llu\n", (u64) + jiffies64_to_msecs(devfreq->time_in_state[i])); } len += sprintf(buf + len, "Total transition : %u\n", |