x86, bts: add fork and exit handling

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / ds.c

diff --git a/arch/x86/kernel/ds.c b/arch/x86/kernel/ds.c
index 98d271e60e086359d2042af7c4177cc817983e39..da91701a2348cd512531716598453ece7ef8cca6 100644 (file)
--- a/arch/x86/kernel/ds.c
+++ b/arch/x86/kernel/ds.c
@@ -1017,3 +1017,14 @@ void ds_switch_to(struct task_struct *prev, struct task_struct *next)
 
        update_debugctlmsr(next->thread.debugctlmsr);
 }
+
+void ds_copy_thread(struct task_struct *tsk, struct task_struct *father)
+{
+       clear_tsk_thread_flag(tsk, TIF_DS_AREA_MSR);
+       tsk->thread.ds_ctx = NULL;
+}
+
+void ds_exit_thread(struct task_struct *tsk)
+{
+       WARN_ON(tsk->thread.ds_ctx);
+}