mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 08:02:30 +00:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
#ifndef _ALPHA_THREAD_INFO_H
|
|
#define _ALPHA_THREAD_INFO_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#include <asm/processor.h>
|
|
#include <asm/types.h>
|
|
#include <asm/hwrpb.h>
|
|
#endif
|
|
|
|
#ifndef __ASSEMBLY__
|
|
struct thread_info {
|
|
struct pcb_struct pcb; /* palcode state */
|
|
|
|
struct task_struct *task; /* main task structure */
|
|
unsigned int flags; /* low level flags */
|
|
unsigned int ieee_state; /* see fpu.h */
|
|
|
|
struct exec_domain *exec_domain; /* execution domain */
|
|
mm_segment_t addr_limit; /* thread address space */
|
|
unsigned cpu; /* current CPU */
|
|
int preempt_count; /* 0 => preemptable, <0 => BUG */
|
|
|
|
int bpt_nsaved;
|
|
unsigned long bpt_addr[2]; /* breakpoint handling */
|
|
unsigned int bpt_insn[2];
|
|
|
|
struct restart_block restart_block;
|
|
};
|
|
|
|
/*
|
|
* Macros/functions for gaining access to the thread information structure.
|
|
*/
|
|
#define INIT_THREAD_INFO(tsk) \
|
|
{ \
|
|
.task = &tsk, \
|
|
.exec_domain = &default_exec_domain, \
|
|
.addr_limit = KERNEL_DS, \
|
|
.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. */
|
|
register struct thread_info *__current_thread_info __asm__("$8");
|
|
#define current_thread_info() __current_thread_info
|
|
|
|
/* Thread information allocation. */
|
|
#define THREAD_SIZE (2*PAGE_SIZE)
|
|
#define alloc_thread_info(tsk) \
|
|
((struct thread_info *) __get_free_pages(GFP_KERNEL,1))
|
|
#define free_thread_info(ti) free_pages((unsigned long) (ti), 1)
|
|
#define get_thread_info(ti) get_task_struct((ti)->task)
|
|
#define put_thread_info(ti) put_task_struct((ti)->task)
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#define PREEMPT_ACTIVE 0x40000000
|
|
|
|
/*
|
|
* Thread information flags:
|
|
* - these are process state flags and used from assembly
|
|
* - pending work-to-be-done flags come first to fit in and immediate operand.
|
|
*
|
|
* TIF_SYSCALL_TRACE is known to be 0 via blbs.
|
|
*/
|
|
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
|
|
#define TIF_NOTIFY_RESUME 1 /* resumption notification requested */
|
|
#define TIF_SIGPENDING 2 /* signal pending */
|
|
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
|
|
#define TIF_POLLING_NRFLAG 4 /* poll_idle is polling NEED_RESCHED */
|
|
#define TIF_DIE_IF_KERNEL 5 /* dik recursion lock */
|
|
#define TIF_UAC_NOPRINT 6 /* see sysinfo.h */
|
|
#define TIF_UAC_NOFIX 7
|
|
#define TIF_UAC_SIGBUS 8
|
|
#define TIF_MEMDIE 9
|
|
|
|
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
|
|
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
|
|
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
|
|
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
|
|
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
|
|
|
|
/* Work to do on interrupt/exception return. */
|
|
#define _TIF_WORK_MASK (_TIF_NOTIFY_RESUME \
|
|
| _TIF_SIGPENDING \
|
|
| _TIF_NEED_RESCHED)
|
|
|
|
/* Work to do on any return to userspace. */
|
|
#define _TIF_ALLWORK_MASK (_TIF_WORK_MASK \
|
|
| _TIF_SYSCALL_TRACE)
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ALPHA_THREAD_INFO_H */
|