Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / m68k / include / asm / thread_info.h

diff --git a/kernel/arch/m68k/include/asm/thread_info.h b/kernel/arch/m68k/include/asm/thread_info.h
new file mode 100644 (file)
index 0000000..cee13c2
--- /dev/null
+++ b/kernel/arch/m68k/include/asm/thread_info.h
@@ -0,0 +1,74 @@
+#ifndef _ASM_M68K_THREAD_INFO_H
+#define _ASM_M68K_THREAD_INFO_H
+
+#include <asm/types.h>
+#include <asm/page.h>
+#include <asm/segment.h>
+
+/*
+ * On machines with 4k pages we default to an 8k thread size, though we
+ * allow a 4k with config option. Any other machine page size then
+ * the thread size must match the page size (which is 8k and larger here).
+ */
+#if PAGE_SHIFT < 13
+#ifdef CONFIG_4KSTACKS
+#define THREAD_SIZE    4096
+#else
+#define THREAD_SIZE    8192
+#endif
+#else
+#define THREAD_SIZE    PAGE_SIZE
+#endif
+#define THREAD_SIZE_ORDER      ((THREAD_SIZE / PAGE_SIZE) - 1)
+
+#ifndef __ASSEMBLY__
+
+struct thread_info {
+       struct task_struct      *task;          /* main task structure */
+       unsigned long           flags;
+       mm_segment_t            addr_limit;     /* thread address space */
+       int                     preempt_count;  /* 0 => preemptable, <0 => BUG */
+       __u32                   cpu;            /* should always be 0 on m68k */
+       unsigned long           tp_value;       /* thread pointer */
+};
+#endif /* __ASSEMBLY__ */
+
+#define INIT_THREAD_INFO(tsk)                  \
+{                                              \
+       .task           = &tsk,                 \
+       .addr_limit     = KERNEL_DS,            \
+       .preempt_count  = INIT_PREEMPT_COUNT,   \
+}
+
+#define init_stack             (init_thread_union.stack)
+
+#ifndef __ASSEMBLY__
+/* how to get the thread information struct from C */
+static inline struct thread_info *current_thread_info(void)
+{
+       struct thread_info *ti;
+       __asm__(
+               "move.l %%sp, %0 \n\t"
+               "and.l  %1, %0"
+               : "=&d"(ti)
+               : "di" (~(THREAD_SIZE-1))
+               );
+       return ti;
+}
+#endif
+
+#define init_thread_info       (init_thread_union.thread_info)
+
+/* entry.S relies on these definitions!
+ * bits 0-7 are tested at every exception exit
+ * bits 8-15 are also tested at syscall exit
+ */
+#define TIF_NOTIFY_RESUME      5       /* callback before returning to user */
+#define TIF_SIGPENDING         6       /* signal pending */
+#define TIF_NEED_RESCHED       7       /* rescheduling necessary */
+#define TIF_DELAYED_TRACE      14      /* single step a syscall */
+#define TIF_SYSCALL_TRACE      15      /* syscall trace active */
+#define TIF_MEMDIE             16      /* is terminating due to OOM killer */
+#define TIF_RESTORE_SIGMASK    18      /* restore signal mask in do_signal */
+
+#endif /* _ASM_M68K_THREAD_INFO_H */