tools/tracing/rtla/src/timerlat_bpf.h

File Facts

System

Linux kernel

Corpus path

tools/tracing/rtla/src/timerlat_bpf.h

Extension

.h

Size

1787 bytes

Lines

63

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

• No C-style include directives detected by the generator.

Detected Declarations

• enum summary_field
• function have_libbpf_support
• function timerlat_bpf_init
• function timerlat_bpf_attach
• function timerlat_bpf_detach
• function timerlat_bpf_destroy
• function timerlat_bpf_wait
• function timerlat_bpf_restart_tracing
• function timerlat_bpf_get_hist_value
• function timerlat_bpf_get_summary_value
• function timerlat_load_bpf_action_program
• function have_libbpf_support

Annotated Snippet

static inline int have_libbpf_support(void) { return 1; }
#else
static inline int timerlat_bpf_init(struct timerlat_params *params)
{
	return -1;
}
static inline int timerlat_bpf_attach(void) { return -1; }
static inline void timerlat_bpf_detach(void) { };
static inline void timerlat_bpf_destroy(void) { };
static inline int timerlat_bpf_wait(int timeout) { return -1; }
static inline int timerlat_bpf_restart_tracing(void) { return -1; };
static inline int timerlat_bpf_get_hist_value(int key,
					      long long *value_irq,
					      long long *value_thread,
					      long long *value_user)
{
	return -1;
}
static inline int timerlat_bpf_get_summary_value(enum summary_field key,
						 long long *value_irq,
						 long long *value_thread,
						 long long *value_user)
{
	return -1;
}
static inline int timerlat_load_bpf_action_program(const char *program_path)
{
	return -1;
}
static inline int have_libbpf_support(void) { return 0; }
#endif /* HAVE_BPF_SKEL */
#endif /* __bpf__ */

Annotation

• Detected declarations: `enum summary_field`, `function have_libbpf_support`, `function timerlat_bpf_init`, `function timerlat_bpf_attach`, `function timerlat_bpf_detach`, `function timerlat_bpf_destroy`, `function timerlat_bpf_wait`, `function timerlat_bpf_restart_tracing`, `function timerlat_bpf_get_hist_value`, `function timerlat_bpf_get_summary_value`.
• 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.