diff options
| -rw-r--r-- | drivers/regulator/core.c | 17 | ||||
| -rw-r--r-- | include/trace/events/regulator.h | 141 |
2 files changed, 158 insertions, 0 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 67d3a61..8a5d0ae 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -25,6 +25,9 @@ #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> +#define CREATE_TRACE_POINTS +#include <trace/events/regulator.h> + #include "dummy.h" #define REGULATOR_VERSION "0.5" @@ -1310,6 +1313,8 @@ static int _regulator_enable(struct regulator_dev *rdev) delay = 0; } + trace_regulator_enable(rdev_get_name(rdev)); + /* Allow the regulator to ramp; it would be useful * to extend this for bulk operations so that the * regulators can ramp together. */ @@ -1317,6 +1322,8 @@ static int _regulator_enable(struct regulator_dev *rdev) if (ret < 0) return ret; + trace_regulator_enable_delay(rdev_get_name(rdev)); + if (delay >= 1000) { mdelay(delay / 1000); udelay(delay % 1000); @@ -1324,6 +1331,8 @@ static int _regulator_enable(struct regulator_dev *rdev) udelay(delay); } + trace_regulator_enable_complete(rdev_get_name(rdev)); + } else if (ret < 0) { printk(KERN_ERR "%s: is_enabled() failed for %s: %d\n", __func__, rdev_get_name(rdev), ret); @@ -1379,6 +1388,8 @@ static int _regulator_disable(struct regulator_dev *rdev, /* we are last user */ if (_regulator_can_change_status(rdev) && rdev->desc->ops->disable) { + trace_regulator_disable(rdev_get_name(rdev)); + ret = rdev->desc->ops->disable(rdev); if (ret < 0) { printk(KERN_ERR "%s: failed to disable %s\n", @@ -1386,6 +1397,8 @@ static int _regulator_disable(struct regulator_dev *rdev, return ret; } + trace_regulator_disable_complete(rdev_get_name(rdev)); + _notifier_call_chain(rdev, REGULATOR_EVENT_DISABLE, NULL); } @@ -1645,6 +1658,8 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV) regulator->min_uV = min_uV; regulator->max_uV = max_uV; + trace_regulator_set_voltage(rdev_get_name(rdev), min_uV, max_uV); + ret = rdev->desc->ops->set_voltage(rdev, min_uV, max_uV, &selector); if (rdev->desc->ops->list_voltage) @@ -1652,6 +1667,8 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV) else selector = -1; + trace_regulator_set_voltage_complete(rdev_get_name(rdev), selector); + out: _notifier_call_chain(rdev, REGULATOR_EVENT_VOLTAGE_CHANGE, NULL); mutex_unlock(&rdev->mutex); diff --git a/include/trace/events/regulator.h b/include/trace/events/regulator.h new file mode 100644 index 0000000..37502a7 --- /dev/null +++ b/include/trace/events/regulator.h @@ -0,0 +1,141 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM regulator + +#if !defined(_TRACE_REGULATOR_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_REGULATOR_H + +#include <linux/ktime.h> +#include <linux/tracepoint.h> + +/* + * Events which just log themselves and the regulator name for enable/disable + * type tracking. + */ +DECLARE_EVENT_CLASS(regulator_basic, + + TP_PROTO(const char *name), + + TP_ARGS(name), + + TP_STRUCT__entry( + __string( name, name ) + ), + + TP_fast_assign( + __assign_str(name, name); + ), + + TP_printk("name=%s", __get_str(name)) + +); + +DEFINE_EVENT(regulator_basic, regulator_enable, + + TP_PROTO(const char *name), + + TP_ARGS(name) + +); + +DEFINE_EVENT(regulator_basic, regulator_enable_delay, + + TP_PROTO(const char *name), + + TP_ARGS(name) + +); + +DEFINE_EVENT(regulator_basic, regulator_enable_complete, + + TP_PROTO(const char *name), + + TP_ARGS(name) + +); + +DEFINE_EVENT(regulator_basic, regulator_disable, + + TP_PROTO(const char *name), + + TP_ARGS(name) + +); + +DEFINE_EVENT(regulator_basic, regulator_disable_complete, + + TP_PROTO(const char *name), + + TP_ARGS(name) + +); + +/* + * Events that take a range of numerical values, mostly for voltages + * and so on. + */ +DECLARE_EVENT_CLASS(regulator_range, + + TP_PROTO(const char *name, int min, int max), + + TP_ARGS(name, min, max), + + TP_STRUCT__entry( + __string( name, name ) + __field( int, min ) + __field( int, max ) + ), + + TP_fast_assign( + __assign_str(name, name); + __entry->min = min; + __entry->max = max; + ), + + TP_printk("name=%s (%d-%d)", __get_str(name), + (int)__entry->min, (int)__entry->max) +); + +DEFINE_EVENT(regulator_range, regulator_set_voltage, + + TP_PROTO(const char *name, int min, int max), + + TP_ARGS(name, min, max) + +); + + +/* + * Events that take a single value, mostly for readback and refcounts. + */ +DECLARE_EVENT_CLASS(regulator_value, + + TP_PROTO(const char *name, unsigned int val), + + TP_ARGS(name, val), + + TP_STRUCT__entry( + __string( name, name ) + __field( unsigned int, val ) + ), + + TP_fast_assign( + __assign_str(name, name); + __entry->val = val; + ), + + TP_printk("name=%s, val=%u", __get_str(name), + (int)__entry->val) +); + +DEFINE_EVENT(regulator_value, regulator_set_voltage_complete, + + TP_PROTO(const char *name, unsigned int value), + + TP_ARGS(name, value) + +); + +#endif /* _TRACE_POWER_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |
