diff options
Diffstat (limited to 'drivers/base/cpu.c')
| -rw-r--r-- | drivers/base/cpu.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 91bbb1959d8d..dee022638fe6 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -180,10 +180,106 @@ static struct attribute_group crash_note_cpu_attr_group = { }; #endif +#ifdef CONFIG_SCHED_HMP + +static ssize_t show_sched_static_cpu_pwr_cost(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cpu *cpu = container_of(dev, struct cpu, dev); + ssize_t rc; + int cpuid = cpu->dev.id; + unsigned int pwr_cost; + + pwr_cost = sched_get_static_cpu_pwr_cost(cpuid); + + rc = snprintf(buf, PAGE_SIZE-2, "%d\n", pwr_cost); + + return rc; +} + +static ssize_t __ref store_sched_static_cpu_pwr_cost(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cpu *cpu = container_of(dev, struct cpu, dev); + int err; + int cpuid = cpu->dev.id; + unsigned int pwr_cost; + + err = kstrtouint(strstrip((char *)buf), 0, &pwr_cost); + if (err) + return err; + + err = sched_set_static_cpu_pwr_cost(cpuid, pwr_cost); + + if (err >= 0) + err = count; + + return err; +} + +static ssize_t show_sched_static_cluster_pwr_cost(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cpu *cpu = container_of(dev, struct cpu, dev); + ssize_t rc; + int cpuid = cpu->dev.id; + unsigned int pwr_cost; + + pwr_cost = sched_get_static_cluster_pwr_cost(cpuid); + + rc = snprintf(buf, PAGE_SIZE-2, "%d\n", pwr_cost); + + return rc; +} + +static ssize_t __ref store_sched_static_cluster_pwr_cost(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cpu *cpu = container_of(dev, struct cpu, dev); + int err; + int cpuid = cpu->dev.id; + unsigned int pwr_cost; + + err = kstrtouint(strstrip((char *)buf), 0, &pwr_cost); + if (err) + return err; + + err = sched_set_static_cluster_pwr_cost(cpuid, pwr_cost); + + if (err >= 0) + err = count; + + return err; +} + +static DEVICE_ATTR(sched_static_cpu_pwr_cost, 0644, + show_sched_static_cpu_pwr_cost, + store_sched_static_cpu_pwr_cost); +static DEVICE_ATTR(sched_static_cluster_pwr_cost, 0644, + show_sched_static_cluster_pwr_cost, + store_sched_static_cluster_pwr_cost); + +static struct attribute *hmp_sched_cpu_attrs[] = { + &dev_attr_sched_static_cpu_pwr_cost.attr, + &dev_attr_sched_static_cluster_pwr_cost.attr, + NULL +}; + +static struct attribute_group sched_hmp_cpu_attr_group = { + .attrs = hmp_sched_cpu_attrs, +}; + +#endif /* CONFIG_SCHED_HMP */ + static const struct attribute_group *common_cpu_attr_groups[] = { #ifdef CONFIG_KEXEC &crash_note_cpu_attr_group, #endif +#ifdef CONFIG_SCHED_HMP + &sched_hmp_cpu_attr_group, +#endif NULL }; @@ -191,6 +287,9 @@ static const struct attribute_group *hotplugable_cpu_attr_groups[] = { #ifdef CONFIG_KEXEC &crash_note_cpu_attr_group, #endif +#ifdef CONFIG_SCHED_HMP + &sched_hmp_cpu_attr_group, +#endif NULL }; |