diff options
-rw-r--r-- | MAINTAINERS | 1 | ||||
-rw-r--r-- | include/trace/events/devfreq.h | 40 |
2 files changed, 41 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 3671fdea5010..27ed10966c81 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4552,6 +4552,7 @@ S: Maintained F: drivers/devfreq/ F: include/linux/devfreq.h F: Documentation/devicetree/bindings/devfreq/ +F: include/trace/events/devfreq.h DEVICE FREQUENCY EVENT (DEVFREQ-EVENT) M: Chanwoo Choi <cw00.choi@samsung.com> diff --git a/include/trace/events/devfreq.h b/include/trace/events/devfreq.h new file mode 100644 index 000000000000..cf5b8772175d --- /dev/null +++ b/include/trace/events/devfreq.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM devfreq + +#if !defined(_TRACE_DEVFREQ_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_DEVFREQ_H + +#include <linux/devfreq.h> +#include <linux/tracepoint.h> + +TRACE_EVENT(devfreq_monitor, + TP_PROTO(struct devfreq *devfreq), + + TP_ARGS(devfreq), + + TP_STRUCT__entry( + __field(unsigned long, freq) + __field(unsigned long, busy_time) + __field(unsigned long, total_time) + __field(unsigned int, polling_ms) + __string(dev_name, dev_name(&devfreq->dev)) + ), + + TP_fast_assign( + __entry->freq = devfreq->previous_freq; + __entry->busy_time = devfreq->last_status.busy_time; + __entry->total_time = devfreq->last_status.total_time; + __entry->polling_ms = devfreq->profile->polling_ms; + __assign_str(dev_name, dev_name(&devfreq->dev)); + ), + + TP_printk("dev_name=%s freq=%lu polling_ms=%u load=%lu", + __get_str(dev_name), __entry->freq, __entry->polling_ms, + __entry->total_time == 0 ? 0 : + (100 * __entry->busy_time) / __entry->total_time) +); +#endif /* _TRACE_DEVFREQ_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |