mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 21:38:32 +08:00
Merge branches 'pm-domains', 'pm-sleep' and 'pm-tools'
* pm-domains: ARM: shmobile: Convert to genpd flags for PM clocks for R-mobile ARM: shmobile: Convert to genpd flags for PM clocks for r8a7779 PM / Domains: Initial PM clock support for genpd PM / Domains: Power on the PM domain right after attach completes PM / Domains: Move struct pm_domain_data to pm_domain.h PM / Domains: Extract code to power off/on a PM domain PM / Domains: Make genpd parameter of pm_genpd_present() const * pm-sleep: PM / hibernate: Deletion of an unnecessary check before the function call "vfree" PM / Hibernate: Migrate to ktime_t * pm-tools: tools: cpupower: fix return checks for sysfs_get_idlestate_count()
This commit is contained in:
Rafael J. Wysocki
commit
389cbf36e5
@ -83,9 +83,8 @@ static void r8a7779_init_pm_domain(struct r8a7779_pm_domain *r8a7779_pd)
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{
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struct generic_pm_domain *genpd = &r8a7779_pd->genpd;
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genpd->flags = GENPD_FLAG_PM_CLK;
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pm_genpd_init(genpd, NULL, false);
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genpd->dev_ops.stop = pm_clk_suspend;
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genpd->dev_ops.start = pm_clk_resume;
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genpd->dev_ops.active_wakeup = pd_active_wakeup;
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genpd->power_off = pd_power_down;
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genpd->power_on = pd_power_up;
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@ -106,9 +106,8 @@ static void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd)
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struct generic_pm_domain *genpd = &rmobile_pd->genpd;
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struct dev_power_governor *gov = rmobile_pd->gov;
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genpd->flags = GENPD_FLAG_PM_CLK;
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pm_genpd_init(genpd, gov ? : &simple_qos_governor, false);
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genpd->dev_ops.stop = pm_clk_suspend;
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genpd->dev_ops.start = pm_clk_resume;
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genpd->dev_ops.active_wakeup = rmobile_pd_active_wakeup;
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genpd->power_off = rmobile_pd_power_down;
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genpd->power_on = rmobile_pd_power_up;
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@ -12,6 +12,7 @@
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#include <linux/pm_runtime.h>
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#include <linux/pm_domain.h>
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#include <linux/pm_qos.h>
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#include <linux/pm_clock.h>
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#include <linux/slab.h>
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#include <linux/err.h>
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#include <linux/sched.h>
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@ -151,6 +152,59 @@ static void genpd_recalc_cpu_exit_latency(struct generic_pm_domain *genpd)
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genpd->cpuidle_data->idle_state->exit_latency = usecs64;
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}
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static int genpd_power_on(struct generic_pm_domain *genpd)
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{
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ktime_t time_start;
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s64 elapsed_ns;
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int ret;
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if (!genpd->power_on)
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return 0;
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time_start = ktime_get();
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ret = genpd->power_on(genpd);
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if (ret)
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return ret;
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elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));
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if (elapsed_ns <= genpd->power_on_latency_ns)
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return ret;
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genpd->power_on_latency_ns = elapsed_ns;
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genpd->max_off_time_changed = true;
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genpd_recalc_cpu_exit_latency(genpd);
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pr_warn("%s: Power-%s latency exceeded, new value %lld ns\n",
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genpd->name, "on", elapsed_ns);
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return ret;
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}
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static int genpd_power_off(struct generic_pm_domain *genpd)
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{
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ktime_t time_start;
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s64 elapsed_ns;
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int ret;
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if (!genpd->power_off)
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return 0;
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time_start = ktime_get();
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ret = genpd->power_off(genpd);
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if (ret == -EBUSY)
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return ret;
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elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));
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if (elapsed_ns <= genpd->power_off_latency_ns)
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return ret;
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genpd->power_off_latency_ns = elapsed_ns;
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genpd->max_off_time_changed = true;
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pr_warn("%s: Power-%s latency exceeded, new value %lld ns\n",
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genpd->name, "off", elapsed_ns);
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return ret;
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}
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/**
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* __pm_genpd_poweron - Restore power to a given PM domain and its masters.
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* @genpd: PM domain to power up.
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@ -222,25 +276,9 @@ static int __pm_genpd_poweron(struct generic_pm_domain *genpd)
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}
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}
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if (genpd->power_on) {
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ktime_t time_start = ktime_get();
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s64 elapsed_ns;
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ret = genpd->power_on(genpd);
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if (ret)
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goto err;
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elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));
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if (elapsed_ns > genpd->power_on_latency_ns) {
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genpd->power_on_latency_ns = elapsed_ns;
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genpd->max_off_time_changed = true;
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genpd_recalc_cpu_exit_latency(genpd);
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if (genpd->name)
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pr_warning("%s: Power-on latency exceeded, "
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"new value %lld ns\n", genpd->name,
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elapsed_ns);
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}
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}
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ret = genpd_power_on(genpd);
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if (ret)
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goto err;
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out:
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genpd_set_active(genpd);
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@ -544,16 +582,11 @@ static int pm_genpd_poweroff(struct generic_pm_domain *genpd)
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}
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if (genpd->power_off) {
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ktime_t time_start;
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s64 elapsed_ns;
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if (atomic_read(&genpd->sd_count) > 0) {
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ret = -EBUSY;
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goto out;
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}
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time_start = ktime_get();
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/*
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* If sd_count > 0 at this point, one of the subdomains hasn't
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* managed to call pm_genpd_poweron() for the master yet after
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@ -562,21 +595,11 @@ static int pm_genpd_poweroff(struct generic_pm_domain *genpd)
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* the pm_genpd_poweron() restore power for us (this shouldn't
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* happen very often).
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*/
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ret = genpd->power_off(genpd);
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ret = genpd_power_off(genpd);
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if (ret == -EBUSY) {
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genpd_set_active(genpd);
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goto out;
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}
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elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));
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if (elapsed_ns > genpd->power_off_latency_ns) {
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genpd->power_off_latency_ns = elapsed_ns;
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genpd->max_off_time_changed = true;
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if (genpd->name)
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pr_warning("%s: Power-off latency exceeded, "
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"new value %lld ns\n", genpd->name,
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elapsed_ns);
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}
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}
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genpd->status = GPD_STATE_POWER_OFF;
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@ -779,9 +802,9 @@ static inline void genpd_power_off_work_fn(struct work_struct *work) {}
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* pm_genpd_present - Check if the given PM domain has been initialized.
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* @genpd: PM domain to check.
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*/
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static bool pm_genpd_present(struct generic_pm_domain *genpd)
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static bool pm_genpd_present(const struct generic_pm_domain *genpd)
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{
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struct generic_pm_domain *gpd;
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const struct generic_pm_domain *gpd;
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if (IS_ERR_OR_NULL(genpd))
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return false;
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@ -822,8 +845,7 @@ static void pm_genpd_sync_poweroff(struct generic_pm_domain *genpd)
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|| atomic_read(&genpd->sd_count) > 0)
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return;
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if (genpd->power_off)
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genpd->power_off(genpd);
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genpd_power_off(genpd);
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genpd->status = GPD_STATE_POWER_OFF;
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@ -854,8 +876,7 @@ static void pm_genpd_sync_poweron(struct generic_pm_domain *genpd)
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genpd_sd_counter_inc(link->master);
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}
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if (genpd->power_on)
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genpd->power_on(genpd);
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genpd_power_on(genpd);
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genpd->status = GPD_STATE_ACTIVE;
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}
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@ -1277,8 +1298,7 @@ static int pm_genpd_restore_noirq(struct device *dev)
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* If the domain was off before the hibernation, make
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* sure it will be off going forward.
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*/
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if (genpd->power_off)
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genpd->power_off(genpd);
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genpd_power_off(genpd);
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return 0;
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}
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@ -1929,6 +1949,12 @@ void pm_genpd_init(struct generic_pm_domain *genpd,
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genpd->domain.ops.complete = pm_genpd_complete;
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genpd->dev_ops.save_state = pm_genpd_default_save_state;
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genpd->dev_ops.restore_state = pm_genpd_default_restore_state;
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if (genpd->flags & GENPD_FLAG_PM_CLK) {
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genpd->dev_ops.stop = pm_clk_suspend;
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genpd->dev_ops.start = pm_clk_resume;
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}
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mutex_lock(&gpd_list_lock);
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list_add(&genpd->gpd_list_node, &gpd_list);
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mutex_unlock(&gpd_list_lock);
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@ -2216,6 +2242,7 @@ int genpd_dev_pm_attach(struct device *dev)
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}
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dev->pm_domain->detach = genpd_dev_pm_detach;
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pm_genpd_poweron(pd);
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return 0;
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}
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@ -538,11 +538,7 @@ enum rpm_request {
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};
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struct wakeup_source;
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struct pm_domain_data {
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struct list_head list_node;
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struct device *dev;
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};
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struct pm_domain_data;
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struct pm_subsys_data {
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spinlock_t lock;
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@ -17,6 +17,9 @@
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#include <linux/notifier.h>
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#include <linux/cpuidle.h>
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/* Defines used for the flags field in the struct generic_pm_domain */
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#define GENPD_FLAG_PM_CLK (1U << 0) /* PM domain uses PM clk */
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enum gpd_status {
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GPD_STATE_ACTIVE = 0, /* PM domain is active */
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GPD_STATE_WAIT_MASTER, /* PM domain's master is being waited for */
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@ -76,6 +79,7 @@ struct generic_pm_domain {
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struct device *dev);
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void (*detach_dev)(struct generic_pm_domain *domain,
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struct device *dev);
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unsigned int flags; /* Bit field of configs for genpd */
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};
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static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd)
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@ -100,6 +104,11 @@ struct gpd_timing_data {
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bool cached_stop_ok;
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};
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struct pm_domain_data {
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struct list_head list_node;
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struct device *dev;
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};
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struct generic_pm_domain_data {
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struct pm_domain_data base;
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struct gpd_timing_data td;
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@ -28,6 +28,7 @@
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#include <linux/syscore_ops.h>
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#include <linux/ctype.h>
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#include <linux/genhd.h>
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#include <linux/ktime.h>
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#include <trace/events/power.h>
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#include "power.h"
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@ -232,20 +233,17 @@ static void platform_recover(int platform_mode)
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* @nr_pages: Number of memory pages processed between @start and @stop.
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* @msg: Additional diagnostic message to print.
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*/
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void swsusp_show_speed(struct timeval *start, struct timeval *stop,
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unsigned nr_pages, char *msg)
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void swsusp_show_speed(ktime_t start, ktime_t stop,
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unsigned nr_pages, char *msg)
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{
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ktime_t diff;
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u64 elapsed_centisecs64;
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unsigned int centisecs;
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unsigned int k;
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unsigned int kps;
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elapsed_centisecs64 = timeval_to_ns(stop) - timeval_to_ns(start);
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/*
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* If "(s64)elapsed_centisecs64 < 0", it will print long elapsed time,
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* it is obvious enough for what went wrong.
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*/
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do_div(elapsed_centisecs64, NSEC_PER_SEC / 100);
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diff = ktime_sub(stop, start);
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elapsed_centisecs64 = ktime_divns(diff, 10*NSEC_PER_MSEC);
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centisecs = elapsed_centisecs64;
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if (centisecs == 0)
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centisecs = 1; /* avoid div-by-zero */
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@ -174,8 +174,7 @@ extern int hib_wait_on_bio_chain(struct bio **bio_chain);
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struct timeval;
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/* kernel/power/swsusp.c */
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extern void swsusp_show_speed(struct timeval *, struct timeval *,
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unsigned int, char *);
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extern void swsusp_show_speed(ktime_t, ktime_t, unsigned int, char *);
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#ifdef CONFIG_SUSPEND
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/* kernel/power/suspend.c */
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@ -28,6 +28,7 @@
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/compiler.h>
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#include <linux/ktime.h>
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#include <asm/uaccess.h>
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#include <asm/mmu_context.h>
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@ -1576,11 +1577,11 @@ int hibernate_preallocate_memory(void)
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struct zone *zone;
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unsigned long saveable, size, max_size, count, highmem, pages = 0;
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unsigned long alloc, save_highmem, pages_highmem, avail_normal;
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struct timeval start, stop;
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ktime_t start, stop;
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int error;
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printk(KERN_INFO "PM: Preallocating image memory... ");
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do_gettimeofday(&start);
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start = ktime_get();
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error = memory_bm_create(&orig_bm, GFP_IMAGE, PG_ANY);
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if (error)
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@ -1709,9 +1710,9 @@ int hibernate_preallocate_memory(void)
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free_unnecessary_pages();
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out:
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do_gettimeofday(&stop);
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stop = ktime_get();
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printk(KERN_CONT "done (allocated %lu pages)\n", pages);
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swsusp_show_speed(&start, &stop, pages, "Allocated");
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swsusp_show_speed(start, stop, pages, "Allocated");
|
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|
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return 0;
|
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|
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|
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@ -30,6 +30,7 @@
|
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#include <linux/atomic.h>
|
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#include <linux/kthread.h>
|
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#include <linux/crc32.h>
|
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#include <linux/ktime.h>
|
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|
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#include "power.h"
|
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|
||||
@ -445,8 +446,8 @@ static int save_image(struct swap_map_handle *handle,
|
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int nr_pages;
|
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int err2;
|
||||
struct bio *bio;
|
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struct timeval start;
|
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struct timeval stop;
|
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ktime_t start;
|
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ktime_t stop;
|
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|
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printk(KERN_INFO "PM: Saving image data pages (%u pages)...\n",
|
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nr_to_write);
|
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@ -455,7 +456,7 @@ static int save_image(struct swap_map_handle *handle,
|
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m = 1;
|
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nr_pages = 0;
|
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bio = NULL;
|
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do_gettimeofday(&start);
|
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start = ktime_get();
|
||||
while (1) {
|
||||
ret = snapshot_read_next(snapshot);
|
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if (ret <= 0)
|
||||
@ -469,12 +470,12 @@ static int save_image(struct swap_map_handle *handle,
|
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nr_pages++;
|
||||
}
|
||||
err2 = hib_wait_on_bio_chain(&bio);
|
||||
do_gettimeofday(&stop);
|
||||
stop = ktime_get();
|
||||
if (!ret)
|
||||
ret = err2;
|
||||
if (!ret)
|
||||
printk(KERN_INFO "PM: Image saving done.\n");
|
||||
swsusp_show_speed(&start, &stop, nr_to_write, "Wrote");
|
||||
swsusp_show_speed(start, stop, nr_to_write, "Wrote");
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -580,8 +581,8 @@ static int save_image_lzo(struct swap_map_handle *handle,
|
||||
int nr_pages;
|
||||
int err2;
|
||||
struct bio *bio;
|
||||
struct timeval start;
|
||||
struct timeval stop;
|
||||
ktime_t start;
|
||||
ktime_t stop;
|
||||
size_t off;
|
||||
unsigned thr, run_threads, nr_threads;
|
||||
unsigned char *page = NULL;
|
||||
@ -674,7 +675,7 @@ static int save_image_lzo(struct swap_map_handle *handle,
|
||||
m = 1;
|
||||
nr_pages = 0;
|
||||
bio = NULL;
|
||||
do_gettimeofday(&start);
|
||||
start = ktime_get();
|
||||
for (;;) {
|
||||
for (thr = 0; thr < nr_threads; thr++) {
|
||||
for (off = 0; off < LZO_UNC_SIZE; off += PAGE_SIZE) {
|
||||
@ -759,12 +760,12 @@ static int save_image_lzo(struct swap_map_handle *handle,
|
||||
|
||||
out_finish:
|
||||
err2 = hib_wait_on_bio_chain(&bio);
|
||||
do_gettimeofday(&stop);
|
||||
stop = ktime_get();
|
||||
if (!ret)
|
||||
ret = err2;
|
||||
if (!ret)
|
||||
printk(KERN_INFO "PM: Image saving done.\n");
|
||||
swsusp_show_speed(&start, &stop, nr_to_write, "Wrote");
|
||||
swsusp_show_speed(start, stop, nr_to_write, "Wrote");
|
||||
out_clean:
|
||||
if (crc) {
|
||||
if (crc->thr)
|
||||
@ -965,8 +966,8 @@ static int load_image(struct swap_map_handle *handle,
|
||||
{
|
||||
unsigned int m;
|
||||
int ret = 0;
|
||||
struct timeval start;
|
||||
struct timeval stop;
|
||||
ktime_t start;
|
||||
ktime_t stop;
|
||||
struct bio *bio;
|
||||
int err2;
|
||||
unsigned nr_pages;
|
||||
@ -978,7 +979,7 @@ static int load_image(struct swap_map_handle *handle,
|
||||
m = 1;
|
||||
nr_pages = 0;
|
||||
bio = NULL;
|
||||
do_gettimeofday(&start);
|
||||
start = ktime_get();
|
||||
for ( ; ; ) {
|
||||
ret = snapshot_write_next(snapshot);
|
||||
if (ret <= 0)
|
||||
@ -996,7 +997,7 @@ static int load_image(struct swap_map_handle *handle,
|
||||
nr_pages++;
|
||||
}
|
||||
err2 = hib_wait_on_bio_chain(&bio);
|
||||
do_gettimeofday(&stop);
|
||||
stop = ktime_get();
|
||||
if (!ret)
|
||||
ret = err2;
|
||||
if (!ret) {
|
||||
@ -1005,7 +1006,7 @@ static int load_image(struct swap_map_handle *handle,
|
||||
if (!snapshot_image_loaded(snapshot))
|
||||
ret = -ENODATA;
|
||||
}
|
||||
swsusp_show_speed(&start, &stop, nr_to_read, "Read");
|
||||
swsusp_show_speed(start, stop, nr_to_read, "Read");
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -1067,8 +1068,8 @@ static int load_image_lzo(struct swap_map_handle *handle,
|
||||
int ret = 0;
|
||||
int eof = 0;
|
||||
struct bio *bio;
|
||||
struct timeval start;
|
||||
struct timeval stop;
|
||||
ktime_t start;
|
||||
ktime_t stop;
|
||||
unsigned nr_pages;
|
||||
size_t off;
|
||||
unsigned i, thr, run_threads, nr_threads;
|
||||
@ -1190,7 +1191,7 @@ static int load_image_lzo(struct swap_map_handle *handle,
|
||||
m = 1;
|
||||
nr_pages = 0;
|
||||
bio = NULL;
|
||||
do_gettimeofday(&start);
|
||||
start = ktime_get();
|
||||
|
||||
ret = snapshot_write_next(snapshot);
|
||||
if (ret <= 0)
|
||||
@ -1343,7 +1344,7 @@ out_finish:
|
||||
wait_event(crc->done, atomic_read(&crc->stop));
|
||||
atomic_set(&crc->stop, 0);
|
||||
}
|
||||
do_gettimeofday(&stop);
|
||||
stop = ktime_get();
|
||||
if (!ret) {
|
||||
printk(KERN_INFO "PM: Image loading done.\n");
|
||||
snapshot_write_finalize(snapshot);
|
||||
@ -1359,7 +1360,7 @@ out_finish:
|
||||
}
|
||||
}
|
||||
}
|
||||
swsusp_show_speed(&start, &stop, nr_to_read, "Read");
|
||||
swsusp_show_speed(start, stop, nr_to_read, "Read");
|
||||
out_clean:
|
||||
for (i = 0; i < ring_size; i++)
|
||||
free_page((unsigned long)page[i]);
|
||||
@ -1374,7 +1375,7 @@ out_clean:
|
||||
kthread_stop(data[thr].thr);
|
||||
vfree(data);
|
||||
}
|
||||
if (page) vfree(page);
|
||||
vfree(page);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -22,13 +22,13 @@
|
||||
|
||||
static void cpuidle_cpu_output(unsigned int cpu, int verbose)
|
||||
{
|
||||
unsigned int idlestates, idlestate;
|
||||
int idlestates, idlestate;
|
||||
char *tmp;
|
||||
|
||||
printf(_ ("Analyzing CPU %d:\n"), cpu);
|
||||
|
||||
idlestates = sysfs_get_idlestate_count(cpu);
|
||||
if (idlestates == 0) {
|
||||
if (idlestates < 1) {
|
||||
printf(_("CPU %u: No idle states\n"), cpu);
|
||||
return;
|
||||
}
|
||||
@ -100,10 +100,10 @@ static void cpuidle_general_output(void)
|
||||
static void proc_cpuidle_cpu_output(unsigned int cpu)
|
||||
{
|
||||
long max_allowed_cstate = 2000000000;
|
||||
unsigned int cstate, cstates;
|
||||
int cstate, cstates;
|
||||
|
||||
cstates = sysfs_get_idlestate_count(cpu);
|
||||
if (cstates == 0) {
|
||||
if (cstates < 1) {
|
||||
printf(_("CPU %u: No C-states info\n"), cpu);
|
||||
return;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user