ia64/linux-2.6.18-xen.hg

view include/asm-sh64/thread_info.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
1 #ifndef __ASM_SH64_THREAD_INFO_H
2 #define __ASM_SH64_THREAD_INFO_H
4 /*
5 * SuperH 5 version
6 * Copyright (C) 2003 Paul Mundt
7 */
9 #ifdef __KERNEL__
11 #ifndef __ASSEMBLY__
12 #include <asm/registers.h>
14 /*
15 * low level task data that entry.S needs immediate access to
16 * - this struct should fit entirely inside of one cache line
17 * - this struct shares the supervisor stack pages
18 * - if the contents of this structure are changed, the assembly constants must also be changed
19 */
20 struct thread_info {
21 struct task_struct *task; /* main task structure */
22 struct exec_domain *exec_domain; /* execution domain */
23 unsigned long flags; /* low level flags */
24 /* Put the 4 32-bit fields together to make asm offsetting easier. */
25 int preempt_count; /* 0 => preemptable, <0 => BUG */
26 __u16 cpu;
28 mm_segment_t addr_limit;
29 struct restart_block restart_block;
31 __u8 supervisor_stack[0];
32 };
34 /*
35 * macros/functions for gaining access to the thread information structure
36 */
37 #define INIT_THREAD_INFO(tsk) \
38 { \
39 .task = &tsk, \
40 .exec_domain = &default_exec_domain, \
41 .flags = 0, \
42 .cpu = 0, \
43 .preempt_count = 1, \
44 .addr_limit = KERNEL_DS, \
45 .restart_block = { \
46 .fn = do_no_restart_syscall, \
47 }, \
48 }
50 #define init_thread_info (init_thread_union.thread_info)
51 #define init_stack (init_thread_union.stack)
53 /* how to get the thread information struct from C */
54 static inline struct thread_info *current_thread_info(void)
55 {
56 struct thread_info *ti;
58 __asm__ __volatile__ ("getcon " __KCR0 ", %0\n\t" : "=r" (ti));
60 return ti;
61 }
63 /* thread information allocation */
67 #define alloc_thread_info(ti) ((struct thread_info *) __get_free_pages(GFP_KERNEL,1))
68 #define free_thread_info(ti) free_pages((unsigned long) (ti), 1)
70 #endif /* __ASSEMBLY__ */
72 #define THREAD_SIZE 8192
74 #define PREEMPT_ACTIVE 0x10000000
76 /* thread information flags */
77 #define TIF_SYSCALL_TRACE 0 /* syscall trace active */
78 #define TIF_SIGPENDING 2 /* signal pending */
79 #define TIF_NEED_RESCHED 3 /* rescheduling necessary */
80 #define TIF_MEMDIE 4
83 #endif /* __KERNEL__ */
85 #endif /* __ASM_SH64_THREAD_INFO_H */