tools/perf/util/counts.h

File Facts

System

Linux kernel

Corpus path

tools/perf/util/counts.h

Extension

.h

Size

1188 bytes

Lines

46

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.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h
• internal/xyarray.h
• perf/evsel.h
• stdbool.h

Detected Declarations

• struct evsel
• struct perf_counts
• function perf_counts
• function perf_counts__is_loaded
• function perf_counts__set_loaded

Annotated Snippet

struct perf_counts {
	s8			  scaled;
	struct xyarray		  *values;
	struct xyarray		  *loaded;
};


static inline struct perf_counts_values*
perf_counts(struct perf_counts *counts, int cpu_map_idx, int thread)
{
	return xyarray__entry(counts->values, cpu_map_idx, thread);
}

static inline bool
perf_counts__is_loaded(struct perf_counts *counts, int cpu_map_idx, int thread)
{
	return *((bool *) xyarray__entry(counts->loaded, cpu_map_idx, thread));
}

static inline void
perf_counts__set_loaded(struct perf_counts *counts, int cpu_map_idx, int thread, bool loaded)
{
	*((bool *) xyarray__entry(counts->loaded, cpu_map_idx, thread)) = loaded;
}

struct perf_counts *perf_counts__new(int ncpus, int nthreads);
void perf_counts__delete(struct perf_counts *counts);
void perf_counts__reset(struct perf_counts *counts);

void evsel__reset_counts(struct evsel *evsel);
int evsel__alloc_counts(struct evsel *evsel);
void evsel__free_counts(struct evsel *evsel);

#endif /* __PERF_COUNTS_H */

Annotation

• Immediate include surface: `linux/types.h`, `internal/xyarray.h`, `perf/evsel.h`, `stdbool.h`.
• Detected declarations: `struct evsel`, `struct perf_counts`, `function perf_counts`, `function perf_counts__is_loaded`, `function perf_counts__set_loaded`.
• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.