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Merge branches 'powercap', 'pm-cpufreq' and 'pm-domains'

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* powercap:
  powercap / RAPL: fix BIOS lock check

* pm-cpufreq:
  cpufreq: intel_pstate: Minor cleanup for FRAC_BITS
  cpufreq: tegra: add regulator dependency for T124

* pm-domains:
  PM / Domains: Allow runtime PM callbacks to be re-used during system PM
This commit is contained in:
Rafael J. Wysocki 2015-12-14 22:58:57 +01:00
commit f1b9fc591e
4 changed files with 29 additions and 15 deletions
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17
drivers/base/power/domain.c
View File

@ -390,6 +390,7 @@ static int pm_genpd_runtime_suspend(struct device *dev)
struct generic_pm_domain *genpd;
bool (*stop_ok)(struct device *__dev);
struct gpd_timing_data *td = &dev_gpd_data(dev)->td;
bool runtime_pm = pm_runtime_enabled(dev);
ktime_t time_start;
s64 elapsed_ns;
int ret;
@ -400,11 +401,18 @@ static int pm_genpd_runtime_suspend(struct device *dev)
if (IS_ERR(genpd))
return -EINVAL;
/*
* A runtime PM centric subsystem/driver may re-use the runtime PM
* callbacks for other purposes than runtime PM. In those scenarios
* runtime PM is disabled. Under these circumstances, we shall skip
* validating/measuring the PM QoS latency.
*/
stop_ok = genpd->gov ? genpd->gov->stop_ok : NULL;
if (stop_ok && !stop_ok(dev))
if (runtime_pm && stop_ok && !stop_ok(dev))
return -EBUSY;
/* Measure suspend latency. */
if (runtime_pm)
time_start = ktime_get();
ret = genpd_save_dev(genpd, dev);
@ -418,6 +426,7 @@ static int pm_genpd_runtime_suspend(struct device *dev)
}
/* Update suspend latency value if the measured time exceeds it. */
if (runtime_pm) {
elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));
if (elapsed_ns > td->suspend_latency_ns) {
td->suspend_latency_ns = elapsed_ns;
@ -426,6 +435,7 @@ static int pm_genpd_runtime_suspend(struct device *dev)
genpd->max_off_time_changed = true;
td->constraint_changed = true;
}
}
/*
* If power.irq_safe is set, this routine will be run with interrupts
@ -453,6 +463,7 @@ static int pm_genpd_runtime_resume(struct device *dev)
{
struct generic_pm_domain *genpd;
struct gpd_timing_data *td = &dev_gpd_data(dev)->td;
bool runtime_pm = pm_runtime_enabled(dev);
ktime_t time_start;
s64 elapsed_ns;
int ret;
@ -479,14 +490,14 @@ static int pm_genpd_runtime_resume(struct device *dev)
out:
/* Measure resume latency. */
if (timed)
if (timed && runtime_pm)
time_start = ktime_get();
genpd_start_dev(genpd, dev);
genpd_restore_dev(genpd, dev);
/* Update resume latency value if the measured time exceeds it. */
if (timed) {
if (timed && runtime_pm) {
elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));
if (elapsed_ns > td->resume_latency_ns) {
td->resume_latency_ns = elapsed_ns;

2
drivers/cpufreq/Kconfig.arm
View File

@ -226,7 +226,7 @@ config ARM_TEGRA20_CPUFREQ
config ARM_TEGRA124_CPUFREQ
tristate "Tegra124 CPUFreq support"
depends on ARCH_TEGRA && CPUFREQ_DT
depends on ARCH_TEGRA && CPUFREQ_DT && REGULATOR
default y
help
This adds the CPUFreq driver support for Tegra124 SOCs.

2
drivers/cpufreq/intel_pstate.c
View File

@ -1123,7 +1123,7 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
limits->max_sysfs_pct);
limits->max_perf_pct = max(limits->min_policy_pct,
limits->max_perf_pct);
limits->max_perf = round_up(limits->max_perf, 8);
limits->max_perf = round_up(limits->max_perf, FRAC_BITS);
/* Make sure min_perf_pct <= max_perf_pct */
limits->min_perf_pct = min(limits->max_perf_pct, limits->min_perf_pct);

5
drivers/powercap/intel_rapl.c
View File

@ -1341,7 +1341,10 @@ static int rapl_detect_domains(struct rapl_package *rp, int cpu)
for (rd = rp->domains; rd < rp->domains + rp->nr_domains; rd++) {
/* check if the domain is locked by BIOS */
if (rapl_read_data_raw(rd, FW_LOCK, false, &locked)) {
ret = rapl_read_data_raw(rd, FW_LOCK, false, &locked);
if (ret)
return ret;
if (locked) {
pr_info("RAPL package %d domain %s locked by BIOS\n",
rp->id, rd->name);
rd->state |= DOMAIN_STATE_BIOS_LOCKED;