Linux-2.6.12-rc2v2.6.12-rc2

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!

1 files changed, 144 insertions, 0 deletions

diff --git a/include/asm-arm26/thread_info.h b/include/asm-arm26/thread_info.h
new file mode 100644
index 000000000000..50f41b50268a
--- /dev/null
+++ b/include/asm-arm26/thread_info.h
@@ -0,0 +1,144 @@
+/*
+ *  linux/include/asm-arm26/thread_info.h
+ *
+ *  Copyright (C) 2002 Russell King.
+ *  Copyright (C) 2003 Ian Molton.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_ARM_THREAD_INFO_H
+#define __ASM_ARM_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+struct task_struct;
+struct exec_domain;
+
+#include <linux/compiler.h>
+#include <asm/fpstate.h>
+#include <asm/ptrace.h>
+#include <asm/types.h>
+
+typedef unsigned long mm_segment_t;
+
+struct cpu_context_save {
+        __u32   r4;
+        __u32   r5;
+        __u32   r6;
+        __u32   r7;
+        __u32   r8;
+        __u32   r9;
+        __u32   sl;
+        __u32   fp;
+        __u32   sp;
+        __u32   pc;
+};
+
+/*
+ * low level task data that entry.S needs immediate access to.
+ * We assume cpu_context follows immedately after cpu_domain.
+ */
+struct thread_info {
+        unsigned long           flags;          /* low level flags */
+        __s32                   preempt_count;  /* 0 => preemptable, <0 => bug */
+        mm_segment_t            addr_limit;     /* address limit */
+        struct task_struct      *task;          /* main task structure */
+        struct exec_domain      *exec_domain;   /* execution domain */
+        __u32                   cpu;            /* cpu */
+        struct cpu_context_save cpu_context;    /* cpu context */
+        struct restart_block    restart_block;
+        union fp_state          fpstate;
+};
+
+#define INIT_THREAD_INFO(tsk)                   \
+{                                               \
+        .task           &tsk,                   \
+        .exec_domain    &default_exec_domain,   \
+        .flags          0,                      \
+        .preempt_count  0,                      \
+        .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) __attribute_const__;
+
+static inline struct thread_info *current_thread_info(void)
+{
+        register unsigned long sp asm ("sp");
+        return (struct thread_info *)(sp & ~0x1fff);
+}
+
+/* FIXME - PAGE_SIZE < 32K */
+#define THREAD_SIZE             (8*32768) // FIXME - this needs attention (see kernel/fork.c which gets a nice div by zero if this is lower than 8*32768
+#define __get_user_regs(x) (((struct pt_regs *)((unsigned long)(x) + THREAD_SIZE - 8)) - 1)
+
+extern struct thread_info *alloc_thread_info(struct task_struct *task);
+extern void free_thread_info(struct thread_info *);
+
+#define get_thread_info(ti)     get_task_struct((ti)->task)
+#define put_thread_info(ti)     put_task_struct((ti)->task)
+
+#define thread_saved_pc(tsk)    \
+        ((unsigned long)(pc_pointer((tsk)->thread_info->cpu_context.pc)))
+#define thread_saved_fp(tsk)    \
+        ((unsigned long)((tsk)->thread_info->cpu_context.fp))
+
+#else /* !__ASSEMBLY__ */
+
+#define TI_FLAGS        0
+#define TI_PREEMPT      4
+#define TI_ADDR_LIMIT   8
+#define TI_TASK         12
+#define TI_EXEC_DOMAIN  16
+#define TI_CPU          20
+#define TI_CPU_SAVE     24
+#define TI_RESTART_BLOCK 28
+#define TI_FPSTATE      68
+
+#endif
+
+#define PREEMPT_ACTIVE  0x04000000
+
+/*
+ * thread information flags:
+ *  TIF_SYSCALL_TRACE   - syscall trace active
+ *  TIF_NOTIFY_RESUME   - resumption notification requested
+ *  TIF_SIGPENDING      - signal pending
+ *  TIF_NEED_RESCHED    - rescheduling necessary
+ *  TIF_USEDFPU         - FPU was used by this task this quantum (SMP)
+ *  TIF_POLLING_NRFLAG  - true if poll_idle() is polling TIF_NEED_RESCHED
+ */
+#define TIF_NOTIFY_RESUME       0
+#define TIF_SIGPENDING          1
+#define TIF_NEED_RESCHED        2
+#define TIF_SYSCALL_TRACE       8
+#define TIF_USED_FPU            16
+#define TIF_POLLING_NRFLAG      17
+#define TIF_MEMDIE              18
+
+#define _TIF_NOTIFY_RESUME      (1 << TIF_NOTIFY_RESUME)
+#define _TIF_SIGPENDING         (1 << TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED       (1 << TIF_NEED_RESCHED)
+#define _TIF_SYSCALL_TRACE      (1 << TIF_SYSCALL_TRACE)
+#define _TIF_USED_FPU           (1 << TIF_USED_FPU)
+#define _TIF_POLLING_NRFLAG     (1 << TIF_POLLING_NRFLAG)
+
+/*
+ * Change these and you break ASM code in entry-common.S
+ */
+#define _TIF_WORK_MASK          0x000000ff
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_ARM_THREAD_INFO_H */