cregit-Linux how code gets into the kernel

Release 4.7 arch/s390/include/asm/thread_info.h

Directory: arch/s390/include/asm
/*
 *  S390 version
 *    Copyright IBM Corp. 2002, 2006
 *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
 */

#ifndef _ASM_THREAD_INFO_H

#define _ASM_THREAD_INFO_H

#include <linux/const.h>

/*
 * Size of kernel stack for each process
 */

#define THREAD_ORDER 2

#define ASYNC_ORDER  2


#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)

#define ASYNC_SIZE  (PAGE_SIZE << ASYNC_ORDER)

#ifndef __ASSEMBLY__
#include <asm/lowcore.h>
#include <asm/page.h>
#include <asm/processor.h>

/*
 * low level task data that entry.S needs immediate access to
 * - this struct should fit entirely inside of one cache line
 * - this struct shares the supervisor stack pages
 * - if the contents of this structure are changed, the assembly constants must also be changed
 */

struct thread_info {
	
struct task_struct	*task;		/* main task structure */
	
unsigned long		flags;		/* low level flags */
	
unsigned long		sys_call_table;	/* System call table address */
	
unsigned int		cpu;		/* current CPU */
	
int			preempt_count;	/* 0 => preemptable, <0 => BUG */
	
unsigned int		system_call;
	
__u64			user_timer;
	
__u64			system_timer;
	
unsigned long		last_break;	/* last breaking-event-address. */
};

/*
 * macros/functions for gaining access to the thread information structure
 */

#define INIT_THREAD_INFO(tsk)			\
{                                               \
        .task           = &tsk,                 \
        .flags          = 0,                    \
        .cpu            = 0,                    \
        .preempt_count  = INIT_PREEMPT_COUNT,   \
}


#define init_thread_info	(init_thread_union.thread_info)

#define init_stack		(init_thread_union.stack)

/* how to get the thread information struct from C */



static inline struct thread_info *current_thread_info(void)
{
	return (struct thread_info *) S390_lowcore.thread_info;
}


Contributors
PersonTokensPropCommitsCommitProp
martin schwidefskymartin schwidefsky1990.48%266.67%


heiko carstensheiko carstens29.52%133.33%


Total21100.00%3100.00%



void arch_release_task_struct(struct task_struct *tsk);
int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);


#define THREAD_SIZE_ORDER THREAD_ORDER

#endif

/*
 * thread information flags bit numbers
 */

#define TIF_NOTIFY_RESUME	0	
/* callback before returning to user */

#define TIF_SIGPENDING		1	
/* signal pending */

#define TIF_NEED_RESCHED	2	
/* rescheduling necessary */

#define TIF_SYSCALL_TRACE	3	
/* syscall trace active */

#define TIF_SYSCALL_AUDIT	4	
/* syscall auditing active */

#define TIF_SECCOMP		5	
/* secure computing */

#define TIF_SYSCALL_TRACEPOINT	6	
/* syscall tracepoint instrumentation */

#define TIF_UPROBE		7	
/* breakpointed or single-stepping */

#define TIF_31BIT		16	
/* 32bit process */

#define TIF_MEMDIE		17	
/* is terminating due to OOM killer */

#define TIF_RESTORE_SIGMASK	18	
/* restore signal mask in do_signal() */

#define TIF_SINGLE_STEP		19	
/* This task is single stepped */

#define TIF_BLOCK_STEP		20	
/* This task is block stepped */

#define TIF_UPROBE_SINGLESTEP	21	
/* This task is uprobe single stepped */


#define _TIF_NOTIFY_RESUME	_BITUL(TIF_NOTIFY_RESUME)

#define _TIF_SIGPENDING		_BITUL(TIF_SIGPENDING)

#define _TIF_NEED_RESCHED	_BITUL(TIF_NEED_RESCHED)

#define _TIF_SYSCALL_TRACE	_BITUL(TIF_SYSCALL_TRACE)

#define _TIF_SYSCALL_AUDIT	_BITUL(TIF_SYSCALL_AUDIT)

#define _TIF_SECCOMP		_BITUL(TIF_SECCOMP)

#define _TIF_SYSCALL_TRACEPOINT	_BITUL(TIF_SYSCALL_TRACEPOINT)

#define _TIF_UPROBE		_BITUL(TIF_UPROBE)

#define _TIF_31BIT		_BITUL(TIF_31BIT)

#define _TIF_SINGLE_STEP	_BITUL(TIF_SINGLE_STEP)

#endif /* _ASM_THREAD_INFO_H */

Overall Contributors
PersonTokensPropCommitsCommitProp
martin schwidefskymartin schwidefsky17063.67%1242.86%


heiko carstensheiko carstens6423.97%725.00%


jan willekejan willeke134.87%13.57%


christian ehrhardtchristian ehrhardt51.87%13.57%


roland mcgrathroland mcgrath41.50%13.57%


andrea arcangeliandrea arcangeli31.12%13.57%


josh stonejosh stone31.12%13.57%


fujita tomonorifujita tomonori20.75%13.57%


jesper juhljesper juhl10.37%13.57%


andreas dilgerandreas dilger10.37%13.57%


richard weinbergerrichard weinberger10.37%13.57%


Total267100.00%28100.00%

  
Directory: arch/s390/include/asm



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