include/trace/syscall.h

File Facts

System

Linux kernel

Corpus path

include/trace/syscall.h

Extension

.h

Size

1573 bytes

Lines

58

Domain

Repository Root And Misc

Bucket

include

Inferred role

Repository Root And Misc: syscall or user/kernel boundary

Status

core implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

• Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.
• Defines or participates in a user/kernel boundary; inspect argument validation, copy_from_user/copy_to_user, credentials, and dispatch target.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/tracepoint.h
• linux/unistd.h
• linux/trace_events.h
• linux/thread_info.h
• asm/ptrace.h

Detected Declarations

• struct syscall_metadata
• function syscall_tracepoint_update
• function syscall_tracepoint_update

Annotated Snippet

struct syscall_metadata {
	const char	*name;
	int		syscall_nr;
	u8		nb_args:7;
	u8		user_arg_is_str:1;
	s8		user_arg_size;
	short		user_mask;
	const char	**types;
	const char	**args;
	struct list_head enter_fields;

	struct trace_event_call *enter_event;
	struct trace_event_call *exit_event;
};

#if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
static inline void syscall_tracepoint_update(struct task_struct *p)
{
	if (test_syscall_work(SYSCALL_TRACEPOINT))
		set_task_syscall_work(p, SYSCALL_TRACEPOINT);
	else
		clear_task_syscall_work(p, SYSCALL_TRACEPOINT);
}
#else
static inline void syscall_tracepoint_update(struct task_struct *p)
{
}
#endif

#endif /* _TRACE_SYSCALL_H */

Annotation

• Immediate include surface: `linux/tracepoint.h`, `linux/unistd.h`, `linux/trace_events.h`, `linux/thread_info.h`, `asm/ptrace.h`.
• Detected declarations: `struct syscall_metadata`, `function syscall_tracepoint_update`, `function syscall_tracepoint_update`.
• Atlas domain: Repository Root And Misc / include.
• Implementation status: core 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.