diff options
| author | Vincent Donnefort <vincent.donnefort@arm.com> | 2021-09-08 15:05:25 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-10-05 16:33:05 +0200 |
| commit | 8354eb9eb3ddb4a8d0857648a470beffcc9d8639 (patch) | |
| tree | d94af8466865b0599474fdc51cd974937e00595f /kernel/power | |
| parent | 88f7a89560f6d0fc7803a8933637488f14e0a098 (diff) | |
PM: EM: Allow skipping inefficient states
The new performance domain flag EM_PERF_DOMAIN_SKIP_INEFFICIENCIES allows
to not take into account inefficient states when estimating energy
consumption. This intends to let the Energy Model know that CPUFreq itself
will skip inefficiencies and such states don't need to be part of the
estimation anymore.
Signed-off-by: Vincent Donnefort <vincent.donnefort@arm.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/energy_model.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c index 3a7d1573b214..d353ef29e37f 100644 --- a/kernel/power/energy_model.c +++ b/kernel/power/energy_model.c @@ -65,6 +65,17 @@ static int em_debug_units_show(struct seq_file *s, void *unused) } DEFINE_SHOW_ATTRIBUTE(em_debug_units); +static int em_debug_skip_inefficiencies_show(struct seq_file *s, void *unused) +{ + struct em_perf_domain *pd = s->private; + int enabled = (pd->flags & EM_PERF_DOMAIN_SKIP_INEFFICIENCIES) ? 1 : 0; + + seq_printf(s, "%d\n", enabled); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(em_debug_skip_inefficiencies); + static void em_debug_create_pd(struct device *dev) { struct dentry *d; @@ -78,6 +89,8 @@ static void em_debug_create_pd(struct device *dev) &em_debug_cpus_fops); debugfs_create_file("units", 0444, d, dev->em_pd, &em_debug_units_fops); + debugfs_create_file("skip-inefficiencies", 0444, d, dev->em_pd, + &em_debug_skip_inefficiencies_fops); /* Create a sub-directory for each performance state */ for (i = 0; i < dev->em_pd->nr_perf_states; i++) |