/* Free all resources held by a thread. */
extern void release_thread(struct task_struct *);
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while (0)
-
/* Create a kernel thread without removing it from tasklists. */
extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
/* Free all resources held by a thread. */
extern void release_thread(struct task_struct *);
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while (0)
-
unsigned long get_wchan(struct task_struct *p);
#if __LINUX_ARM_ARCH__ == 6 || defined(CONFIG_ARM_ERRATA_754327)
/* Create a kernel thread without removing it from tasklists */
extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while(0)
-
/* Return saved PC of a blocked thread */
#define thread_saved_pc(tsk) ((tsk)->thread.cpu_context.pc)
{
}
-#define prepare_to_copy(tsk) do { } while (0)
-
extern int kernel_thread(int (*fn) (void *), void *arg, unsigned long flags);
/*
{
}
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while (0)
-
extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
#define copy_segments(tsk, mm) do { } while (0)
#define task_pt_regs(task) user_regs(task_thread_info(task))
#define current_regs() task_pt_regs(current)
-static inline void prepare_to_copy(struct task_struct *tsk)
-{
-}
-
extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
unsigned long get_wchan(struct task_struct *p);
__frame->sp = (_usp); \
} while(0)
-extern void prepare_to_copy(struct task_struct *tsk);
-
/* Free all resources held by a thread. */
static inline void release_thread(struct task_struct *dead_task)
{
return do_fork(clone_flags, newsp, __frame, 0, parent_tidptr, child_tidptr);
} /* end sys_clone() */
-/*****************************************************************************/
-/*
- * This gets called before we allocate a new thread and copy
- * the current task into it.
- */
-void prepare_to_copy(struct task_struct *tsk)
-{
- //unlazy_fpu(tsk);
-} /* end prepare_to_copy() */
-
-/*****************************************************************************/
/*
* set up the kernel stack and exception frames for a new process
*/
extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-#define prepare_to_copy(tsk) do { } while (0)
-
/*
* Free current thread data structures etc..
*/
#define cpu_relax() __vmyield()
-/*
- * "Unlazying all lazy status" occurs here.
- */
-static inline void prepare_to_copy(struct task_struct *tsk)
-{
-}
-
/*
* Decides where the kernel will search for a free chunk of vm space during
* mmaps.
*/
#define release_thread(dead_task)
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while (0)
-
/*
* This is the mechanism for creating a new kernel thread.
*
/* Free all resources held by a thread. */
extern void release_thread(struct task_struct *);
-#define prepare_to_copy(tsk) do { } while (0)
-
/*
* create a kernel thread without removing it from tasklists
*/
{
}
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while (0)
-
extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
/*
# define cpu_relax() barrier()
# define cpu_sleep() do {} while (0)
-# define prepare_to_copy(tsk) do {} while (0)
#define task_pt_regs(tsk) \
(((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1)
/* Free all resources held by a thread. */
#define release_thread(thread) do { } while(0)
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while (0)
-
extern long kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
extern unsigned long thread_saved_pc(struct task_struct *tsk);
/* Free all resources held by a thread. */
extern void release_thread(struct task_struct *);
-/* Prepare to copy thread state - unlazy all lazy status */
-extern void prepare_to_copy(struct task_struct *tsk);
-
/*
* create a kernel thread without removing it from tasklists
*/
}
/*
- * this gets called before we allocate a new thread and copy the current task
- * into it so that we can store lazy state into memory
+ * this gets called so that we can store lazy state into memory and copy the
+ * current task into the new thread.
*/
-void prepare_to_copy(struct task_struct *tsk)
+int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
{
- unlazy_fpu(tsk);
+ unlazy_fpu(src);
+ *dst = *src;
+ return 0;
}
/*
#define task_pt_regs(task) user_regs(task_thread_info(task))
#define current_regs() user_regs(current_thread_info())
-extern inline void prepare_to_copy(struct task_struct *tsk)
-{
-}
-
#define INIT_SP (sizeof(init_stack) + (unsigned long) &init_stack)
#define INIT_THREAD { }
extern void release_thread(struct task_struct *);
extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while (0)
-
extern void map_hpux_gateway_page(struct task_struct *tsk, struct mm_struct *mm);
extern unsigned long get_wchan(struct task_struct *p);
void start_thread(struct pt_regs *regs, unsigned long fdptr, unsigned long sp);
void release_thread(struct task_struct *);
-/* Prepare to copy thread state - unlazy all lazy status */
-extern void prepare_to_copy(struct task_struct *tsk);
-
/* Create a new kernel thread. */
extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
}
/*
- * This gets called before we allocate a new thread and copy
- * the current task into it.
+ * this gets called so that we can store coprocessor state into memory and
+ * copy the current task into the new thread.
*/
-void prepare_to_copy(struct task_struct *tsk)
+int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
{
- flush_fp_to_thread(current);
- flush_altivec_to_thread(current);
- flush_vsx_to_thread(current);
- flush_spe_to_thread(current);
+ flush_fp_to_thread(src);
+ flush_altivec_to_thread(src);
+ flush_vsx_to_thread(src);
+ flush_spe_to_thread(src);
#ifdef CONFIG_HAVE_HW_BREAKPOINT
- flush_ptrace_hw_breakpoint(tsk);
+ flush_ptrace_hw_breakpoint(src);
#endif /* CONFIG_HAVE_HW_BREAKPOINT */
+
+ *dst = *src;
+ return 0;
}
/*
extern void release_thread(struct task_struct *);
extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while (0)
-
/*
* Return saved PC of a blocked thread.
*/
#define cpu_relax() barrier()
#define release_thread(thread) do {} while (0)
-#define prepare_to_copy(tsk) do {} while (0)
/*
* User space process size: 2GB. This is hardcoded into a few places,
/* Free all resources held by a thread. */
extern void release_thread(struct task_struct *);
-/* Prepare to copy thread state - unlazy all lazy status */
-void prepare_to_copy(struct task_struct *tsk);
-
/*
* create a kernel thread without removing it from tasklists
*/
#define copy_segments(p, mm) do { } while (0)
#define release_segments(mm) do { } while (0)
#define forget_segments() do { } while (0)
-#define prepare_to_copy(tsk) do { } while (0)
/*
* FPU lazy state save handling.
*/
EXPORT_SYMBOL(__stack_chk_guard);
#endif
+/*
+ * this gets called so that we can store lazy state into memory and copy the
+ * current task into the new thread.
+ */
int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
{
+#ifdef CONFIG_SUPERH32
+ unlazy_fpu(src, task_pt_regs(src));
+#endif
*dst = *src;
if (src->thread.xstate) {
}
EXPORT_SYMBOL(dump_fpu);
-/*
- * This gets called before we allocate a new thread and copy
- * the current task into it.
- */
-void prepare_to_copy(struct task_struct *tsk)
-{
- unlazy_fpu(tsk, task_pt_regs(tsk));
-}
-
asmlinkage void ret_from_fork(void);
int copy_thread(unsigned long clone_flags, unsigned long usp,
#define release_thread(tsk) do { } while(0)
extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while (0)
-
extern unsigned long get_wchan(struct task_struct *);
#define task_pt_regs(tsk) ((tsk)->thread.kregs)
/* Free all resources held by a thread. */
#define release_thread(tsk) do { } while (0)
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while (0)
-
extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
extern unsigned long get_wchan(struct task_struct *task);
/* Nothing for now */
}
-/* Prepare to copy thread state - unlazy all lazy status. */
-#define prepare_to_copy(tsk) do { } while (0)
-
extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
extern int do_work_pending(struct pt_regs *regs, u32 flags);
extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-static inline void prepare_to_copy(struct task_struct *tsk)
-{
-}
-
-
extern unsigned long thread_saved_pc(struct task_struct *t);
static inline void mm_copy_segments(struct mm_struct *from_mm,
/* Free all resources held by a thread. */
extern void release_thread(struct task_struct *);
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while (0)
-
unsigned long get_wchan(struct task_struct *p);
#define cpu_relax() barrier()
/* Free all resources held by a thread. */
extern void release_thread(struct task_struct *);
-/* Prepare to copy thread state - unlazy all lazy state */
-extern void prepare_to_copy(struct task_struct *tsk);
-
unsigned long get_wchan(struct task_struct *p);
/*
struct kmem_cache *task_xstate_cachep;
EXPORT_SYMBOL_GPL(task_xstate_cachep);
+/*
+ * this gets called so that we can store lazy state into memory and copy the
+ * current task into the new thread.
+ */
int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
{
int ret;
+ unlazy_fpu(src);
+
*dst = *src;
if (fpu_allocated(&src->thread.fpu)) {
memset(&dst->thread.fpu, 0, sizeof(dst->thread.fpu));
SLAB_PANIC | SLAB_NOTRACK, NULL);
}
+static inline void drop_fpu(struct task_struct *tsk)
+{
+ /*
+ * Forget coprocessor state..
+ */
+ tsk->fpu_counter = 0;
+ clear_fpu(tsk);
+ clear_used_math();
+}
+
/*
* Free current thread data structures etc..
*/
put_cpu();
kfree(bp);
}
+
+ drop_fpu(me);
}
void show_regs_common(void)
flush_ptrace_hw_breakpoint(tsk);
memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array));
- /*
- * Forget coprocessor state..
- */
- tsk->fpu_counter = 0;
- clear_fpu(tsk);
- clear_used_math();
+ drop_fpu(tsk);
}
static void hard_disable_TSC(void)
release_vm86_irqs(dead_task);
}
-/*
- * This gets called before we allocate a new thread and copy
- * the current task into it.
- */
-void prepare_to_copy(struct task_struct *tsk)
-{
- unlazy_fpu(tsk);
-}
-
int copy_thread(unsigned long clone_flags, unsigned long sp,
unsigned long unused,
struct task_struct *p, struct pt_regs *regs)
return get_desc_base(&t->thread.tls_array[tls]);
}
-/*
- * This gets called before we allocate a new thread and copy
- * the current task into it.
- */
-void prepare_to_copy(struct task_struct *tsk)
-{
- unlazy_fpu(tsk);
-}
-
int copy_thread(unsigned long clone_flags, unsigned long sp,
unsigned long unused,
struct task_struct *p, struct pt_regs *regs)
if (!fx)
return;
- BUG_ON(__thread_has_fpu(tsk));
-
xstate_bv = tsk->thread.fpu.state->xsave.xsave_hdr.xstate_bv;
/*
/* Free all resources held by a thread. */
#define release_thread(thread) do { } while(0)
-/* Prepare to copy thread state - unlazy all lazy status */
-extern void prepare_to_copy(struct task_struct*);
-
/* Create a kernel thread without removing it from tasklists */
extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
}
/*
- * This is called before the thread is copied.
+ * this gets called so that we can store coprocessor state into memory and
+ * copy the current task into the new thread.
*/
-void prepare_to_copy(struct task_struct *tsk)
+int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
{
#if XTENSA_HAVE_COPROCESSORS
- coprocessor_flush_all(task_thread_info(tsk));
+ coprocessor_flush_all(task_thread_info(src));
#endif
+ *dst = *src;
+ return 0;
}
/*
core_waiters = zap_threads(tsk, mm, core_state, exit_code);
up_write(&mm->mmap_sem);
- if (core_waiters > 0)
+ if (core_waiters > 0) {
+ struct core_thread *ptr;
+
wait_for_completion(&core_state->startup);
+ /*
+ * Wait for all the threads to become inactive, so that
+ * all the thread context (extended register state, like
+ * fpu etc) gets copied to the memory.
+ */
+ ptr = core_state->dumper.next;
+ while (ptr != NULL) {
+ wait_task_inactive(ptr->task, 0);
+ ptr = ptr->next;
+ }
+ }
return core_waiters;
}
int node = tsk_fork_get_node(orig);
int err;
- prepare_to_copy(orig);
-
tsk = alloc_task_struct_node(node);
if (!tsk)
return NULL;
projects / mirror_ubuntu-artful-kernel.git / commitdiff