tools/perf/util/ftrace.h

Source file repositories/reference/linux-study-clean/tools/perf/util/ftrace.h

File Facts

System
Linux kernel
Corpus path
tools/perf/util/ftrace.h
Extension
.h
Size
2133 bytes
Lines
97
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

struct perf_ftrace {
	struct evlist		*evlist;
	struct target		target;
	const char		*tracer;
	struct list_head	filters;
	struct list_head	notrace;
	struct list_head	graph_funcs;
	struct list_head	nograph_funcs;
	struct list_head	event_pair;
	struct hashmap		*profile_hash;
	unsigned long		percpu_buffer_size;
	bool			inherit;
	bool			use_nsec;
	unsigned int		bucket_range;
	unsigned int		min_latency;
	unsigned int		max_latency;
	unsigned int		bucket_num;
	bool			hide_empty;
	int			graph_depth;
	int			func_stack_trace;
	int			func_irq_info;
	int			graph_args;
	int			graph_retval;
	int			graph_retval_hex;
	int			graph_retaddr;
	int			graph_nosleep_time;
	int			graph_noirqs;
	int			graph_verbose;
	int			graph_thresh;
	int			graph_tail;
};

struct filter_entry {
	struct list_head	list;
	char			name[];
};

#define NUM_BUCKET  22  /* 20 + 2 (for outliers in both direction) */

#ifdef HAVE_BPF_SKEL

int perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace);
int perf_ftrace__latency_start_bpf(struct perf_ftrace *ftrace);
int perf_ftrace__latency_stop_bpf(struct perf_ftrace *ftrace);
int perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace,
				  int buckets[], struct stats *stats);
int perf_ftrace__latency_cleanup_bpf(struct perf_ftrace *ftrace);

#else  /* !HAVE_BPF_SKEL */

static inline int
perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace __maybe_unused)
{
	return -1;
}

static inline int
perf_ftrace__latency_start_bpf(struct perf_ftrace *ftrace __maybe_unused)
{
	return -1;
}

static inline int
perf_ftrace__latency_stop_bpf(struct perf_ftrace *ftrace __maybe_unused)
{
	return -1;
}

static inline int
perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace __maybe_unused,
			      int buckets[] __maybe_unused,
			      struct stats *stats __maybe_unused)
{
	return -1;
}

static inline int
perf_ftrace__latency_cleanup_bpf(struct perf_ftrace *ftrace __maybe_unused)
{
	return -1;
}

#endif  /* HAVE_BPF_SKEL */

#endif  /* __PERF_FTRACE_H__ */

Annotation

Implementation Notes