The OPP table can be used often in devfreq. Trying to get it each time can be expensive, so cache it in the devfreq struct.
Signed-off-by: Saravana Kannan <[email protected]> --- drivers/devfreq/devfreq.c | 6 ++++++ include/linux/devfreq.h | 1 + 2 files changed, 7 insertions(+) diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 6b6991f0e873..ac62b78dc035 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -597,6 +597,8 @@ static void devfreq_dev_release(struct device *dev) if (devfreq->profile->exit) devfreq->profile->exit(devfreq->dev.parent); + if (devfreq->opp_table) + dev_pm_opp_put_opp_table(devfreq->opp_table); mutex_destroy(&devfreq->lock); kfree(devfreq); } @@ -677,6 +679,10 @@ struct devfreq *devfreq_add_device(struct device *dev, devfreq->max_freq = devfreq->scaling_max_freq; devfreq->suspend_freq = dev_pm_opp_get_suspend_opp_freq(dev); + devfreq->opp_table = dev_pm_opp_get_opp_table(dev); + if (IS_ERR(devfreq->opp_table)) + devfreq->opp_table = NULL; + atomic_set(&devfreq->suspend_count, 0); dev_set_name(&devfreq->dev, "devfreq%d", diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index fbffa74bfc1b..0d877c9513d7 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -156,6 +156,7 @@ struct devfreq { struct devfreq_dev_profile *profile; const struct devfreq_governor *governor; char governor_name[DEVFREQ_NAME_LEN]; + struct opp_table *opp_table; struct notifier_block nb; struct delayed_work work; -- 2.22.0.410.gd8fdbe21b5-goog
