drivers/cpufreq/powernv-trace.h

Source file repositories/reference/linux-study-clean/drivers/cpufreq/powernv-trace.h

File Facts

System
Linux kernel
Corpus path
drivers/cpufreq/powernv-trace.h
Extension
.h
Size
910 bytes
Lines
45
Domain
Driver Families
Bucket
drivers/cpufreq
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#if !defined(_POWERNV_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _POWERNV_TRACE_H

#include <linux/cpufreq.h>
#include <linux/tracepoint.h>
#include <linux/trace_events.h>

#undef TRACE_SYSTEM
#define TRACE_SYSTEM power

TRACE_EVENT(powernv_throttle,

	TP_PROTO(int chip_id, const char *reason, int pmax),

	TP_ARGS(chip_id, reason, pmax),

	TP_STRUCT__entry(
		__field(int, chip_id)
		__string(reason, reason)
		__field(int, pmax)
	),

	TP_fast_assign(
		__entry->chip_id = chip_id;
		__assign_str(reason);
		__entry->pmax = pmax;
	),

	TP_printk("Chip %d Pmax %d %s", __entry->chip_id,
		  __entry->pmax, __get_str(reason))
);

#endif /* _POWERNV_TRACE_H */

/* This part must be outside protection */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .

#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE powernv-trace

#include <trace/define_trace.h>

Annotation

Implementation Notes