arch/arm/mach-s3c/wakeup-mask.c

File Facts

System

Linux kernel

Corpus path

arch/arm/mach-s3c/wakeup-mask.c

Extension

.c

Size

906 bytes

Lines

43

Domain

Architecture Layer

Bucket

arch/arm

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/kernel.h
• linux/spinlock.h
• linux/device.h
• linux/types.h
• linux/irq.h
• linux/io.h
• wakeup-mask.h
• pm.h

Detected Declarations

• function samsung_sync_wakemask

Annotated Snippet

if (mask->irq == NO_WAKEUP_IRQ) {
			val |= mask->bit;
			continue;
		}

		data = irq_get_irq_data(mask->irq);

		/* bit of a liberty to read this directly from irq_data. */
		if (irqd_is_wakeup_set(data))
			val &= ~mask->bit;
		else
			val |= mask->bit;
	}

	printk(KERN_INFO "wakemask %08x => %08x\n", __raw_readl(reg), val);
	__raw_writel(val, reg);
}

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/spinlock.h`, `linux/device.h`, `linux/types.h`, `linux/irq.h`, `linux/io.h`, `wakeup-mask.h`, `pm.h`.
• Detected declarations: `function samsung_sync_wakemask`.
• Atlas domain: Architecture Layer / arch/arm.
• 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.