From 6ff66e2a008337b8a005fd0ae2037bed716262cc Mon Sep 17 00:00:00 2001 From: Matthias Kaehlcke Date: Fri, 3 Aug 2018 13:05:10 -0700 Subject: PM / devfreq: Don't adjust to user limits in governors Several governors use the user space limits df->min/max_freq to adjust the target frequency. This is not necessary, since update_devfreq() already takes care of this. Instead the governor can request the available min/max frequency by setting the target frequency to DEVFREQ_MIN/MAX_FREQ and let update_devfreq() take care of any adjustments. Signed-off-by: Matthias Kaehlcke Reviewed-by: Brian Norris Reviewed-by: Chanwoo Choi Signed-off-by: MyungJoo Ham --- drivers/devfreq/governor_simpleondemand.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) (limited to 'drivers/devfreq/governor_simpleondemand.c') diff --git a/drivers/devfreq/governor_simpleondemand.c b/drivers/devfreq/governor_simpleondemand.c index 28e0f2de7100..c0417f0e081e 100644 --- a/drivers/devfreq/governor_simpleondemand.c +++ b/drivers/devfreq/governor_simpleondemand.c @@ -27,7 +27,6 @@ static int devfreq_simple_ondemand_func(struct devfreq *df, unsigned int dfso_upthreshold = DFSO_UPTHRESHOLD; unsigned int dfso_downdifferential = DFSO_DOWNDIFFERENCTIAL; struct devfreq_simple_ondemand_data *data = df->data; - unsigned long max = (df->max_freq) ? df->max_freq : UINT_MAX; err = devfreq_update_stats(df); if (err) @@ -47,7 +46,7 @@ static int devfreq_simple_ondemand_func(struct devfreq *df, /* Assume MAX if it is going to be divided by zero */ if (stat->total_time == 0) { - *freq = max; + *freq = DEVFREQ_MAX_FREQ; return 0; } @@ -60,13 +59,13 @@ static int devfreq_simple_ondemand_func(struct devfreq *df, /* Set MAX if it's busy enough */ if (stat->busy_time * 100 > stat->total_time * dfso_upthreshold) { - *freq = max; + *freq = DEVFREQ_MAX_FREQ; return 0; } /* Set MAX if we do not know the initial frequency */ if (stat->current_frequency == 0) { - *freq = max; + *freq = DEVFREQ_MAX_FREQ; return 0; } @@ -85,11 +84,6 @@ static int devfreq_simple_ondemand_func(struct devfreq *df, b = div_u64(b, (dfso_upthreshold - dfso_downdifferential / 2)); *freq = (unsigned long) b; - if (df->min_freq && *freq < df->min_freq) - *freq = df->min_freq; - if (df->max_freq && *freq > df->max_freq) - *freq = df->max_freq; - return 0; } -- cgit v1.2.3