arch/s390/include/asm/ftrace.lds.h

File Facts

System

Linux kernel

Corpus path

arch/s390/include/asm/ftrace.lds.h

Extension

.h

Size

720 bytes

Lines

22

Domain

Architecture Layer

Bucket

arch/s390

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.

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

Dependency Surface

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

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef DIV_ROUND_UP
#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
#endif

#define SIZEOF_MCOUNT_LOC_ENTRY 8
#define SIZEOF_FTRACE_HOTPATCH_TRAMPOLINE 24
#define FTRACE_HOTPATCH_TRAMPOLINES_SIZE(n)				       \
	DIV_ROUND_UP(SIZEOF_FTRACE_HOTPATCH_TRAMPOLINE * (n),		       \
		     SIZEOF_MCOUNT_LOC_ENTRY)

#ifdef CONFIG_FUNCTION_TRACER
#define FTRACE_HOTPATCH_TRAMPOLINES_TEXT				       \
	. = ALIGN(8);							       \
	__ftrace_hotpatch_trampolines_start = .;			       \
	. = . + FTRACE_HOTPATCH_TRAMPOLINES_SIZE(__stop_mcount_loc -	       \
						 __start_mcount_loc);	       \
	__ftrace_hotpatch_trampolines_end = .;
#else
#define FTRACE_HOTPATCH_TRAMPOLINES_TEXT
#endif

Annotation

• Atlas domain: Architecture Layer / arch/s390.
• 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.