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/*
 * Copyright 2004-2010 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#ifndef _ASM_THREAD_INFO_H
#define _ASM_THREAD_INFO_H

#include <asm/page.h>
#include <asm/entry.h>
#include <asm/l1layout.h>
#include <linux/compiler.h>

#ifdef __KERNEL__

/* Thread Align Mask to reach to the top of the stack
 * for any process
 */
#define ALIGN_PAGE_MASK		0xffffe000

/*
 * Size of kernel stack for each process. This must be a power of 2...
 */
#define THREAD_SIZE_ORDER	1
#define THREAD_SIZE		8192	/* 2 pages */
#define STACK_WARN		(THREAD_SIZE/8)

#ifndef __ASSEMBLY__

typedef unsigned long mm_segment_t;

/*
 * low level task data.
 * If you change this, change the TI_* offsets below to match.
 */

struct thread_info {
	struct task_struct *task;	/* main task structure */
	unsigned long flags;	/* low level flags */
	int cpu;		/* cpu we're on */
	int preempt_count;	/* 0 => preemptable, <0 => BUG */
	mm_segment_t addr_limit;	/* address limit */
#ifndef CONFIG_SMP
	struct l1_scratch_task_info l1_task_info;
#endif
};

/*
 * 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)

/* Given a task stack pointer, you can find its corresponding
 * thread_info structure just by masking it to the THREAD_SIZE
 * boundary (currently 8K as you can see above).
 */
__attribute_const__
static inline struct thread_info *current_thread_info(void)
{
	struct thread_info *ti;
	__asm__("%0 = sp;" : "=da"(ti));
	return (struct thread_info *)((long)ti & ~((long)THREAD_SIZE-1));
}

#endif				/* __ASSEMBLY__ */

/*
 * thread information flag bit numbers
 */
#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
#define TIF_SIGPENDING		1	/* signal pending */
#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
#define TIF_MEMDIE		4	/* is terminating due to OOM killer */
#define TIF_RESTORE_SIGMASK	5	/* restore signal mask in do_signal() */
#define TIF_IRQ_SYNC		7	/* sync pipeline stage */
#define TIF_NOTIFY_RESUME	8	/* callback before returning to user */
#define TIF_SINGLESTEP		9

/* as above, but as bit values */
#define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
#define _TIF_IRQ_SYNC		(1<<TIF_IRQ_SYNC)
#define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
#define _TIF_SINGLESTEP		(1<<TIF_SINGLESTEP)

#define _TIF_WORK_MASK		0x0000FFFE	/* work to do on interrupt/exception return */

#endif				/* __KERNEL__ */

#endif				/* _ASM_THREAD_INFO_H */

Filemanager

Name Type Size Permission Actions
Kbuild File 658 B 0644
asm-offsets.h File 35 B 0644
atomic.h File 1.55 KB 0644
barrier.h File 2.55 KB 0644
bfin-global.h File 2.8 KB 0644
bfin-lq035q1.h File 868 B 0644
bfin5xx_spi.h File 2.07 KB 0644
bfin_can.h File 36.04 KB 0644
bfin_dma.h File 5.46 KB 0644
bfin_pfmon.h File 1.11 KB 0644
bfin_ppi.h File 9.01 KB 0644
bfin_sdh.h File 7.2 KB 0644
bfin_serial.h File 17.02 KB 0644
bfin_simple_timer.h File 949 B 0644
bfin_sport.h File 1.21 KB 0644
bfin_sport3.h File 5.47 KB 0644
bfin_twi.h File 6.25 KB 0644
bfin_watchdog.h File 696 B 0644
bfrom.h File 3.36 KB 0644
bitops.h File 3.45 KB 0644
blackfin.h File 1.55 KB 0644
bug.h File 1.49 KB 0644
cache.h File 1.47 KB 0644
cacheflush.h File 3.79 KB 0644
cdef_LPBlackfin.h File 18.93 KB 0644
checksum.h File 899 B 0644
clkdev.h File 318 B 0644
clocks.h File 1.66 KB 0644
cmpxchg.h File 3.2 KB 0644
context.S File 5.92 KB 0644
cplb.h File 4.86 KB 0644
cplbinit.h File 1.6 KB 0644
cpu.h File 443 B 0644
def_LPBlackfin.h File 28.6 KB 0644
delay.h File 917 B 0644
dma-mapping.h File 1.09 KB 0644
dma.h File 9.28 KB 0644
dpmc.h File 18.24 KB 0644
early_printk.h File 1.09 KB 0644
elf.h File 4.88 KB 0644
entry.h File 5.27 KB 0644
exec.h File 37 B 0644
fixed_code.h File 806 B 0644
flat.h File 1.41 KB 0644
ftrace.h File 1.37 KB 0644
gpio.h File 5.91 KB 0644
gptimers.h File 8.95 KB 0644
hardirq.h File 301 B 0644
io.h File 1.52 KB 0644
ipipe.h File 5.81 KB 0644
ipipe_base.h File 2.38 KB 0644
irq.h File 879 B 0644
irq_handler.h File 1.93 KB 0644
irqflags.h File 7.13 KB 0644
kgdb.h File 3.23 KB 0644
l1layout.h File 879 B 0644
linkage.h File 205 B 0644
mem_init.h File 13.1 KB 0644
mem_map.h File 1.73 KB 0644
mmu.h File 713 B 0644
mmu_context.h File 5.35 KB 0644
module.h File 410 B 0644
nand.h File 895 B 0644
nmi.h File 195 B 0644
page.h File 546 B 0644
page_offset.h File 192 B 0644
pci.h File 310 B 0644
pda.h File 1.86 KB 0644
perf_event.h File 23 B 0644
pgtable.h File 3 KB 0644
pm.h File 590 B 0644
portmux.h File 16.38 KB 0644
processor.h File 3.21 KB 0644
pseudo_instructions.h File 391 B 0644
ptrace.h File 1.19 KB 0644
reboot.h File 446 B 0644
rwlock.h File 142 B 0644
scb.h File 445 B 0644
sections.h File 2 KB 0644
segment.h File 226 B 0644
smp.h File 1.34 KB 0644
spinlock.h File 1.87 KB 0644
spinlock_types.h File 495 B 0644
string.h File 1.04 KB 0644
switch_to.h File 997 B 0644
syscall.h File 2.15 KB 0644
thread_info.h File 2.66 KB 0644
time.h File 1.33 KB 0644
timex.h File 477 B 0644
tlb.h File 481 B 0644
tlbflush.h File 88 B 0644
trace.h File 2.67 KB 0644
traps.h File 4.87 KB 0644
uaccess.h File 5.79 KB 0644
unistd.h File 523 B 0644
vga.h File 29 B 0644