82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
#ifndef _ASM_PARISC_THREAD_INFO_H
|
|
#define _ASM_PARISC_THREAD_INFO_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#include <asm/processor.h>
|
|
#include <asm/special_insns.h>
|
|
|
|
struct thread_info {
|
|
struct task_struct *task; /* main task structure */
|
|
struct exec_domain *exec_domain;/* execution domain */
|
|
unsigned long flags; /* thread_info flags (see TIF_*) */
|
|
mm_segment_t addr_limit; /* user-level address space limit */
|
|
__u32 cpu; /* current CPU */
|
|
int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */
|
|
struct restart_block restart_block;
|
|
};
|
|
|
|
#define INIT_THREAD_INFO(tsk) \
|
|
{ \
|
|
.task = &tsk, \
|
|
.exec_domain = &default_exec_domain, \
|
|
.flags = 0, \
|
|
.cpu = 0, \
|
|
.addr_limit = KERNEL_DS, \
|
|
.preempt_count = INIT_PREEMPT_COUNT, \
|
|
.restart_block = { \
|
|
.fn = do_no_restart_syscall \
|
|
} \
|
|
}
|
|
|
|
#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 */
|
|
#define current_thread_info() ((struct thread_info *)mfctl(30))
|
|
|
|
#endif /* !__ASSEMBLY */
|
|
|
|
/* thread information allocation */
|
|
|
|
#define THREAD_SIZE_ORDER 2
|
|
/* Be sure to hunt all references to this down when you change the size of
|
|
* the kernel stack */
|
|
#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
|
|
#define THREAD_SHIFT (PAGE_SHIFT + THREAD_SIZE_ORDER)
|
|
|
|
#define PREEMPT_ACTIVE_BIT 28
|
|
#define PREEMPT_ACTIVE (1 << PREEMPT_ACTIVE_BIT)
|
|
|
|
/*
|
|
* thread information flags
|
|
*/
|
|
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
|
|
#define TIF_SIGPENDING 1 /* signal pending */
|
|
#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
|
|
#define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling TIF_NEED_RESCHED */
|
|
#define TIF_32BIT 4 /* 32 bit binary */
|
|
#define TIF_MEMDIE 5 /* is terminating due to OOM killer */
|
|
#define TIF_RESTORE_SIGMASK 6 /* restore saved signal mask */
|
|
#define TIF_NOTIFY_RESUME 8 /* callback before returning to user */
|
|
#define TIF_SINGLESTEP 9 /* single stepping? */
|
|
#define TIF_BLOCKSTEP 10 /* branch stepping? */
|
|
|
|
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
|
|
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
|
|
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
|
|
#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
|
|
#define _TIF_32BIT (1 << TIF_32BIT)
|
|
#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
|
|
#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
|
|
#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
|
|
#define _TIF_BLOCKSTEP (1 << TIF_BLOCKSTEP)
|
|
|
|
#define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | \
|
|
_TIF_NEED_RESCHED | _TIF_RESTORE_SIGMASK)
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _ASM_PARISC_THREAD_INFO_H */
|