arch/s390/include/uapi/asm/hypfs.h

Source file repositories/reference/linux-study-clean/arch/s390/include/uapi/asm/hypfs.h

File Facts

System
Linux kernel
Corpus path
arch/s390/include/uapi/asm/hypfs.h
Extension
.h
Size
1382 bytes
Lines
56
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct hypfs_diag304 {
	__u32	args[2];
	__u64	data;
	__u64	rc;
} __attribute__((packed));

#define HYPFS_IOCTL_MAGIC 0x10

#define HYPFS_DIAG304 \
	_IOWR(HYPFS_IOCTL_MAGIC, 0x20, struct hypfs_diag304)

/*
 * Structures for binary interface /sys/kernel/debug/diag_0c
 */
struct hypfs_diag0c_hdr {
	__u64	len;		/* Length of diag0c buffer without header */
	__u16	version;	/* Version of header */
	char	reserved1[6];	/* Reserved */
	char	tod_ext[16];	/* TOD clock for diag0c */
	__u64	count;		/* Number of entries (CPUs) in diag0c array */
	char	reserved2[24];	/* Reserved */
};

struct hypfs_diag0c_entry {
	char	date[8];	/* MM/DD/YY in EBCDIC */
	char	time[8];	/* HH:MM:SS in EBCDIC */
	__u64	virtcpu;	/* Virtual time consumed by the virt CPU (us) */
	__u64	totalproc;	/* Total of virtual and simulation time (us) */
	__u32	cpu;		/* Linux logical CPU number */
	__u32	reserved;	/* Align to 8 byte */
};

struct hypfs_diag0c_data {
	struct hypfs_diag0c_hdr		hdr;		/* 64 byte header */
	struct hypfs_diag0c_entry	entry[];	/* diag0c entry array */
};

#endif

Annotation

Implementation Notes