arch/x86/include/asm/intel_telemetry.h

Source file repositories/reference/linux-study-clean/arch/x86/include/asm/intel_telemetry.h

File Facts

System
Linux kernel
Corpus path
arch/x86/include/asm/intel_telemetry.h
Extension
.h
Size
2439 bytes
Lines
103
Domain
Architecture Layer
Bucket
arch/x86
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

struct telemetry_evtlog {
	u32 telem_evtid;
	u64 telem_evtlog;
};

struct telemetry_evtconfig {
	/* Array of Event-IDs to Enable */
	u32 *evtmap;

	/* Number of Events (<29) in evtmap */
	u8 num_evts;

	/* Sampling period */
	u8 period;
};

struct telemetry_evtmap {
	const char *name;
	u32 evt_id;
};

struct telemetry_unit_config {
	struct telemetry_evtmap *telem_evts;
	void __iomem *regmap;
	u8 ssram_evts_used;
	u8 curr_period;
	u8 max_period;
	u8 min_period;
};

struct telemetry_plt_config {
	struct telemetry_unit_config pss_config;
	struct telemetry_unit_config ioss_config;
	struct mutex telem_trace_lock;
	struct mutex telem_lock;
	struct intel_pmc_dev *pmc;
	struct intel_scu_ipc_dev *scu;
	bool telem_in_use;
};

struct telemetry_core_ops {
	int (*get_trace_verbosity)(enum telemetry_unit telem_unit,
				   u32 *verbosity);

	int (*set_trace_verbosity)(enum telemetry_unit telem_unit,
				   u32 verbosity);

	int (*raw_read_eventlog)(enum telemetry_unit telem_unit,
				 struct telemetry_evtlog *evtlog,
				 int len, int log_all_evts);

	int (*read_eventlog)(enum telemetry_unit telem_unit,
			     struct telemetry_evtlog *evtlog,
			     int len, int log_all_evts);
};

int telemetry_set_pltdata(const struct telemetry_core_ops *ops,
			  struct telemetry_plt_config *pltconfig);

int telemetry_clear_pltdata(void);

struct telemetry_plt_config *telemetry_get_pltdata(void);

int telemetry_get_evtname(enum telemetry_unit telem_unit,
			  const char **name, int len);

int telemetry_read_events(enum telemetry_unit telem_unit,
			  struct telemetry_evtlog *evtlog, int len);

int telemetry_read_eventlog(enum telemetry_unit telem_unit,
			    struct telemetry_evtlog *evtlog, int len);

int telemetry_raw_read_eventlog(enum telemetry_unit telem_unit,
				struct telemetry_evtlog *evtlog, int len);

int telemetry_set_trace_verbosity(enum telemetry_unit telem_unit,
				  u32 verbosity);

int telemetry_get_trace_verbosity(enum telemetry_unit telem_unit,
				  u32 *verbosity);

#endif /* INTEL_TELEMETRY_H */

Annotation

Implementation Notes