arch/s390/include/asm/softirq_stack.h

File Facts

System

Linux kernel

Corpus path

arch/s390/include/asm/softirq_stack.h

Extension

.h

Size

372 bytes

Lines

15

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

• asm/lowcore.h
• asm/stacktrace.h

Detected Declarations

• function do_softirq_own_stack

Annotated Snippet

#ifndef __ASM_S390_SOFTIRQ_STACK_H
#define __ASM_S390_SOFTIRQ_STACK_H

#include <asm/lowcore.h>
#include <asm/stacktrace.h>

#ifdef CONFIG_SOFTIRQ_ON_OWN_STACK
static inline void do_softirq_own_stack(void)
{
	call_on_stack(0, get_lowcore()->async_stack, void, __do_softirq);
}
#endif
#endif /* __ASM_S390_SOFTIRQ_STACK_H */

Annotation

• Immediate include surface: `asm/lowcore.h`, `asm/stacktrace.h`.
• Detected declarations: `function do_softirq_own_stack`.
• 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.