arch/s390/include/asm/thread_info.h

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

File Facts

System
Linux kernel
Corpus path
arch/s390/include/asm/thread_info.h
Extension
.h
Size
2493 bytes
Lines
85
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 thread_info {
	unsigned long		flags;		/* low level flags */
	unsigned long		syscall_work;	/* SYSCALL_WORK_ flags */
	unsigned int		cpu;		/* current CPU */
	unsigned char		sie;		/* running in SIE context */
};

/*
 * macros/functions for gaining access to the thread information structure
 */
#define INIT_THREAD_INFO(tsk)			\
{						\
	.flags		= 0,			\
}

struct task_struct;

void arch_setup_new_exec(void);
#define arch_setup_new_exec arch_setup_new_exec

#endif

/*
 * thread information flags bit numbers
 *
 * Tell the generic TIF infrastructure which special bits s390 supports
 */
#define HAVE_TIF_NEED_RESCHED_LAZY
#define HAVE_TIF_RESTORE_SIGMASK

#include <asm-generic/thread_info_tif.h>

/* Architecture specific bits */
#define TIF_ASCE_PRIMARY	16	/* primary asce is kernel asce */
#define TIF_GUARDED_STORAGE	17	/* load guarded storage control block */
#define TIF_ISOLATE_BP_GUEST	18	/* Run KVM guests with isolated BP */
#define TIF_PER_TRAP		19	/* Need to handle PER trap on exit to usermode */
#define TIF_SINGLE_STEP		21	/* This task is single stepped */
#define TIF_BLOCK_STEP		22	/* This task is block stepped */
#define TIF_UPROBE_SINGLESTEP	23	/* This task is uprobe single stepped */

#define _TIF_ASCE_PRIMARY	BIT(TIF_ASCE_PRIMARY)
#define _TIF_GUARDED_STORAGE	BIT(TIF_GUARDED_STORAGE)
#define _TIF_ISOLATE_BP_GUEST	BIT(TIF_ISOLATE_BP_GUEST)
#define _TIF_PER_TRAP		BIT(TIF_PER_TRAP)
#define _TIF_SINGLE_STEP	BIT(TIF_SINGLE_STEP)
#define _TIF_BLOCK_STEP		BIT(TIF_BLOCK_STEP)
#define _TIF_UPROBE_SINGLESTEP	BIT(TIF_UPROBE_SINGLESTEP)

#endif /* _ASM_THREAD_INFO_H */

Annotation

Implementation Notes