linux-stable/include/asm-sh64/thread_info.h
Al Viro f5a61d0c13 [PATCH] death of get_thread_info/put_thread_info
{get,put}_thread_info() were introduced in 2.5.4 and never
had been called by anything in the tree.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-12 09:08:59 -08:00

85 lines
2.1 KiB
C

#ifndef __ASM_SH64_THREAD_INFO_H
#define __ASM_SH64_THREAD_INFO_H
/*
* SuperH 5 version
* Copyright (C) 2003 Paul Mundt
*/
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#include <asm/registers.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 */
struct exec_domain *exec_domain; /* execution domain */
unsigned long flags; /* low level flags */
/* Put the 4 32-bit fields together to make asm offsetting easier. */
int preempt_count; /* 0 => preemptable, <0 => BUG */
__u16 cpu;
mm_segment_t addr_limit;
struct restart_block restart_block;
__u8 supervisor_stack[0];
};
/*
* macros/functions for gaining access to the thread information structure
*/
#define INIT_THREAD_INFO(tsk) \
{ \
.task = &tsk, \
.exec_domain = &default_exec_domain, \
.flags = 0, \
.cpu = 0, \
.preempt_count = 1, \
.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 */
static inline struct thread_info *current_thread_info(void)
{
struct thread_info *ti;
__asm__ __volatile__ ("getcon " __KCR0 ", %0\n\t" : "=r" (ti));
return ti;
}
/* thread information allocation */
#define alloc_thread_info(ti) ((struct thread_info *) __get_free_pages(GFP_KERNEL,1))
#define free_thread_info(ti) free_pages((unsigned long) (ti), 1)
#endif /* __ASSEMBLY__ */
#define THREAD_SIZE 8192
#define PREEMPT_ACTIVE 0x10000000
/* thread information flags */
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_MEMDIE 4
#endif /* __KERNEL__ */
#endif /* __ASM_SH64_THREAD_INFO_H */