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 */