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-rw-r--r--arch/powerpc/kernel/process.c52
1 files changed, 12 insertions, 40 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 4937c969009..710f400476d 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -124,7 +124,7 @@ void enable_kernel_altivec(void)
if (current->thread.regs && (current->thread.regs->msr & MSR_VEC))
giveup_altivec(current);
else
- giveup_altivec(NULL); /* just enable AltiVec for kernel - force */
+ giveup_altivec_notask();
#else
giveup_altivec(last_task_used_altivec);
#endif /* CONFIG_SMP */
@@ -711,18 +711,21 @@ release_thread(struct task_struct *t)
}
/*
- * 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;
}
/*
@@ -1252,37 +1255,6 @@ void __ppc64_runlatch_off(void)
}
#endif /* CONFIG_PPC64 */
-#if THREAD_SHIFT < PAGE_SHIFT
-
-static struct kmem_cache *thread_info_cache;
-
-struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node)
-{
- struct thread_info *ti;
-
- ti = kmem_cache_alloc_node(thread_info_cache, GFP_KERNEL, node);
- if (unlikely(ti == NULL))
- return NULL;
-#ifdef CONFIG_DEBUG_STACK_USAGE
- memset(ti, 0, THREAD_SIZE);
-#endif
- return ti;
-}
-
-void free_thread_info(struct thread_info *ti)
-{
- kmem_cache_free(thread_info_cache, ti);
-}
-
-void thread_info_cache_init(void)
-{
- thread_info_cache = kmem_cache_create("thread_info", THREAD_SIZE,
- THREAD_SIZE, 0, NULL);
- BUG_ON(thread_info_cache == NULL);
-}
-
-#endif /* THREAD_SHIFT < PAGE_SHIFT */
-
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)