The patch adds a new file for with trace events for devfreq framework. They are used for performance analysis of the framework. It also contains updates in MAINTAINERS file adding new entry for devfreq maintainers.
Signed-off-by: Lukasz Luba <[email protected]> --- MAINTAINERS | 1 + include/trace/events/devfreq.h | 39 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 40 insertions(+) create mode 100644 include/trace/events/devfreq.h diff --git a/MAINTAINERS b/MAINTAINERS index 9919840..c042fda 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4447,6 +4447,7 @@ 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 <[email protected]> diff --git a/include/trace/events/devfreq.h b/include/trace/events/devfreq.h new file mode 100644 index 0000000..fec9304 --- /dev/null +++ b/include/trace/events/devfreq.h @@ -0,0 +1,39 @@ +/* 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(const char *dev_name, unsigned long freq, + unsigned int polling_ms, unsigned long busy_time, + unsigned long total_time), + + TP_ARGS(dev_name, freq, polling_ms, busy_time, total_time), + + TP_STRUCT__entry( + __string(dev_name, dev_name) + __field(unsigned long, freq) + __field(unsigned int, polling_ms) + __field(unsigned int, load) + ), + + TP_fast_assign( + __assign_str(dev_name, dev_name); + __entry->freq = freq; + __entry->polling_ms = polling_ms; + __entry->load = (100 * busy_time) / total_time; + ), + + TP_printk("dev_name=%s freq=%lu polling_ms=%u load=%u", + __get_str(dev_name), __entry->freq, __entry->polling_ms, + __entry->load) +); +#endif /* _TRACE_DEVFREQ_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> -- 2.7.4
