diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpufreq.h | 25 | ||||
| -rw-r--r-- | include/trace/events/power.h | 84 |
2 files changed, 83 insertions, 26 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 3f458896d45c..ec4112d257bc 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -75,6 +75,7 @@ struct cpufreq_policy { unsigned int max; /* in kHz */ unsigned int cur; /* in kHz, only needed if cpufreq * governors are used */ + unsigned int restore_freq; /* = policy->cur before transition */ unsigned int suspend_freq; /* freq to set during suspend */ unsigned int policy; /* see above */ @@ -221,11 +222,35 @@ struct cpufreq_driver { /* define one out of two */ int (*setpolicy) (struct cpufreq_policy *policy); + + /* + * On failure, should always restore frequency to policy->restore_freq + * (i.e. old freq). + */ int (*target) (struct cpufreq_policy *policy, /* Deprecated */ unsigned int target_freq, unsigned int relation); int (*target_index) (struct cpufreq_policy *policy, unsigned int index); + /* + * Only for drivers with target_index() and CPUFREQ_ASYNC_NOTIFICATION + * unset. + * + * get_intermediate should return a stable intermediate frequency + * platform wants to switch to and target_intermediate() should set CPU + * to to that frequency, before jumping to the frequency corresponding + * to 'index'. Core will take care of sending notifications and driver + * doesn't have to handle them in target_intermediate() or + * target_index(). + * + * Drivers can return '0' from get_intermediate() in case they don't + * wish to switch to intermediate frequency for some target frequency. + * In that case core will directly call ->target_index(). + */ + unsigned int (*get_intermediate)(struct cpufreq_policy *policy, + unsigned int index); + int (*target_intermediate)(struct cpufreq_policy *policy, + unsigned int index); /* should be defined, if possible */ unsigned int (*get) (unsigned int cpu); diff --git a/include/trace/events/power.h b/include/trace/events/power.h index 9a7e08d61258..d19840b0cac8 100644 --- a/include/trace/events/power.h +++ b/include/trace/events/power.h @@ -7,6 +7,9 @@ #include <linux/ktime.h> #include <linux/pm_qos.h> #include <linux/tracepoint.h> +#include <linux/ftrace_event.h> + +#define TPS(x) tracepoint_string(x) DECLARE_EVENT_CLASS(cpu, @@ -90,6 +93,17 @@ TRACE_EVENT(pstate_sample, #define PWR_EVENT_EXIT -1 #endif +#define pm_verb_symbolic(event) \ + __print_symbolic(event, \ + { PM_EVENT_SUSPEND, "suspend" }, \ + { PM_EVENT_RESUME, "resume" }, \ + { PM_EVENT_FREEZE, "freeze" }, \ + { PM_EVENT_QUIESCE, "quiesce" }, \ + { PM_EVENT_HIBERNATE, "hibernate" }, \ + { PM_EVENT_THAW, "thaw" }, \ + { PM_EVENT_RESTORE, "restore" }, \ + { PM_EVENT_RECOVER, "recover" }) + DEFINE_EVENT(cpu, cpu_frequency, TP_PROTO(unsigned int frequency, unsigned int cpu_id), @@ -97,58 +111,76 @@ DEFINE_EVENT(cpu, cpu_frequency, TP_ARGS(frequency, cpu_id) ); -TRACE_EVENT(machine_suspend, +TRACE_EVENT(device_pm_callback_start, - TP_PROTO(unsigned int state), + TP_PROTO(struct device *dev, const char *pm_ops, int event), - TP_ARGS(state), + TP_ARGS(dev, pm_ops, event), TP_STRUCT__entry( - __field( u32, state ) + __string(device, dev_name(dev)) + __string(driver, dev_driver_string(dev)) + __string(parent, dev->parent ? dev_name(dev->parent) : "none") + __string(pm_ops, pm_ops ? pm_ops : "none ") + __field(int, event) ), TP_fast_assign( - __entry->state = state; + __assign_str(device, dev_name(dev)); + __assign_str(driver, dev_driver_string(dev)); + __assign_str(parent, + dev->parent ? dev_name(dev->parent) : "none"); + __assign_str(pm_ops, pm_ops ? pm_ops : "none "); + __entry->event = event; ), - TP_printk("state=%lu", (unsigned long)__entry->state) + TP_printk("%s %s, parent: %s, %s[%s]", __get_str(driver), + __get_str(device), __get_str(parent), __get_str(pm_ops), + pm_verb_symbolic(__entry->event)) ); -TRACE_EVENT(device_pm_report_time, +TRACE_EVENT(device_pm_callback_end, - TP_PROTO(struct device *dev, const char *pm_ops, s64 ops_time, - char *pm_event_str, int error), + TP_PROTO(struct device *dev, int error), - TP_ARGS(dev, pm_ops, ops_time, pm_event_str, error), + TP_ARGS(dev, error), TP_STRUCT__entry( __string(device, dev_name(dev)) __string(driver, dev_driver_string(dev)) - __string(parent, dev->parent ? dev_name(dev->parent) : "none") - __string(pm_ops, pm_ops ? pm_ops : "none ") - __string(pm_event_str, pm_event_str) - __field(s64, ops_time) __field(int, error) ), TP_fast_assign( - const char *tmp = dev->parent ? dev_name(dev->parent) : "none"; - const char *tmp_i = pm_ops ? pm_ops : "none "; - __assign_str(device, dev_name(dev)); __assign_str(driver, dev_driver_string(dev)); - __assign_str(parent, tmp); - __assign_str(pm_ops, tmp_i); - __assign_str(pm_event_str, pm_event_str); - __entry->ops_time = ops_time; __entry->error = error; ), - /* ops_str has an extra space at the end */ - TP_printk("%s %s parent=%s state=%s ops=%snsecs=%lld err=%d", - __get_str(driver), __get_str(device), __get_str(parent), - __get_str(pm_event_str), __get_str(pm_ops), - __entry->ops_time, __entry->error) + TP_printk("%s %s, err=%d", + __get_str(driver), __get_str(device), __entry->error) +); + +TRACE_EVENT(suspend_resume, + + TP_PROTO(const char *action, int val, bool start), + + TP_ARGS(action, val, start), + + TP_STRUCT__entry( + __field(const char *, action) + __field(int, val) + __field(bool, start) + ), + + TP_fast_assign( + __entry->action = action; + __entry->val = val; + __entry->start = start; + ), + + TP_printk("%s[%u] %s", __entry->action, (unsigned int)__entry->val, + (__entry->start)?"begin":"end") ); DECLARE_EVENT_CLASS(wakeup_source, |