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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-parisc/thread_info.h
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-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!
Diffstat (limited to 'include/asm-parisc/thread_info.h')
-rw-r--r--include/asm-parisc/thread_info.h80
1 files changed, 80 insertions, 0 deletions
diff --git a/include/asm-parisc/thread_info.h b/include/asm-parisc/thread_info.h
new file mode 100644
index 000000000000..fe9b7f8ae4c6
--- /dev/null
+++ b/include/asm-parisc/thread_info.h
@@ -0,0 +1,80 @@
+#ifndef _ASM_PARISC_THREAD_INFO_H
+#define _ASM_PARISC_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+#include <asm/processor.h>
+
+struct thread_info {
+ struct task_struct *task; /* main task structure */
+ struct exec_domain *exec_domain;/* execution domain */
+ unsigned long flags; /* thread_info flags (see TIF_*) */
+ mm_segment_t addr_limit; /* user-level address space limit */
+ __u32 cpu; /* current CPU */
+ __s32 preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */
+ struct restart_block restart_block;
+};
+
+#define INIT_THREAD_INFO(tsk) \
+{ \
+ .task = &tsk, \
+ .exec_domain = &default_exec_domain, \
+ .flags = 0, \
+ .cpu = 0, \
+ .addr_limit = KERNEL_DS, \
+ .preempt_count = 1, \
+ .restart_block = { \
+ .fn = do_no_restart_syscall \
+ } \
+}
+
+#define init_thread_info (init_thread_union.thread_info)
+#define init_stack (init_thread_union.stack)
+
+/* thread information allocation */
+
+#define THREAD_ORDER 2
+/* Be sure to hunt all references to this down when you change the size of
+ * the kernel stack */
+#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
+#define THREAD_SHIFT (PAGE_SHIFT + THREAD_ORDER)
+
+#define alloc_thread_info(tsk) ((struct thread_info *) \
+ __get_free_pages(GFP_KERNEL, THREAD_ORDER))
+#define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_ORDER)
+#define get_thread_info(ti) get_task_struct((ti)->task)
+#define put_thread_info(ti) put_task_struct((ti)->task)
+
+
+/* how to get the thread information struct from C */
+#define current_thread_info() ((struct thread_info *)mfctl(30))
+
+#endif /* !__ASSEMBLY */
+
+#define PREEMPT_ACTIVE 0x10000000
+
+/*
+ * thread information flags
+ */
+#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
+#define TIF_NOTIFY_RESUME 1 /* resumption notification requested */
+#define TIF_SIGPENDING 2 /* signal pending */
+#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
+#define TIF_POLLING_NRFLAG 4 /* true if poll_idle() is polling TIF_NEED_RESCHED */
+#define TIF_32BIT 5 /* 32 bit binary */
+#define TIF_MEMDIE 6
+
+#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
+#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
+#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
+#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
+#define _TIF_32BIT (1 << TIF_32BIT)
+
+#define _TIF_USER_WORK_MASK (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | \
+ _TIF_NEED_RESCHED)
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_PARISC_THREAD_INFO_H */