diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-08-22 06:06:51 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-08-22 06:06:51 +0200 |
commit | 8b53b57576292b92b27769f9e213df19b6e57786 (patch) | |
tree | cd851ce4fa71b2653f120d7f11a9c6cbcf311b19 /arch/alpha/include/asm/processor.h | |
parent | ab7e79243746e2a9c5f00243e60108189c44c9eb (diff) | |
parent | 38cc1c3df77c1bb739a4766788eb9fa49f16ffdf (diff) |
Merge branch 'x86/urgent' into x86/pat
Conflicts:
arch/x86/mm/pageattr.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/alpha/include/asm/processor.h')
-rw-r--r-- | arch/alpha/include/asm/processor.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/processor.h b/arch/alpha/include/asm/processor.h new file mode 100644 index 00000000000..94afe585930 --- /dev/null +++ b/arch/alpha/include/asm/processor.h @@ -0,0 +1,93 @@ +/* + * include/asm-alpha/processor.h + * + * Copyright (C) 1994 Linus Torvalds + */ + +#ifndef __ASM_ALPHA_PROCESSOR_H +#define __ASM_ALPHA_PROCESSOR_H + +#include <linux/personality.h> /* for ADDR_LIMIT_32BIT */ + +/* + * Returns current instruction pointer ("program counter"). + */ +#define current_text_addr() \ + ({ void *__pc; __asm__ ("br %0,.+4" : "=r"(__pc)); __pc; }) + +/* + * We have a 42-bit user address space: 4TB user VM... + */ +#define TASK_SIZE (0x40000000000UL) + +#define STACK_TOP \ + (current->personality & ADDR_LIMIT_32BIT ? 0x80000000 : 0x00120000000UL) + +#define STACK_TOP_MAX 0x00120000000UL + +/* This decides where the kernel will search for a free chunk of vm + * space during mmap's. + */ +#define TASK_UNMAPPED_BASE \ + ((current->personality & ADDR_LIMIT_32BIT) ? 0x40000000 : TASK_SIZE / 2) + +typedef struct { + unsigned long seg; +} mm_segment_t; + +/* This is dead. Everything has been moved to thread_info. */ +struct thread_struct { }; +#define INIT_THREAD { } + +/* Return saved PC of a blocked thread. */ +struct task_struct; +extern unsigned long thread_saved_pc(struct task_struct *); + +/* Do necessary setup to start up a newly executed thread. */ +extern void start_thread(struct pt_regs *, unsigned long, unsigned long); + +/* Free all resources held by a thread. */ +extern void release_thread(struct task_struct *); + +/* Prepare to copy thread state - unlazy all lazy status */ +#define prepare_to_copy(tsk) do { } while (0) + +/* Create a kernel thread without removing it from tasklists. */ +extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); + +unsigned long get_wchan(struct task_struct *p); + +#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc) + +#define KSTK_ESP(tsk) \ + ((tsk) == current ? rdusp() : task_thread_info(tsk)->pcb.usp) + +#define cpu_relax() barrier() + +#define ARCH_HAS_PREFETCH +#define ARCH_HAS_PREFETCHW +#define ARCH_HAS_SPINLOCK_PREFETCH + +#ifndef CONFIG_SMP +/* Nothing to prefetch. */ +#define spin_lock_prefetch(lock) do { } while (0) +#endif + +extern inline void prefetch(const void *ptr) +{ + __builtin_prefetch(ptr, 0, 3); +} + +extern inline void prefetchw(const void *ptr) +{ + __builtin_prefetch(ptr, 1, 3); +} + +#ifdef CONFIG_SMP +extern inline void spin_lock_prefetch(const void *ptr) +{ + __builtin_prefetch(ptr, 1, 3); +} +#endif + +#endif /* __ASM_ALPHA_PROCESSOR_H */ |