Merge branch 'drm-fixes-3.16' of git://people.freedesktop.org/~agd5f/linux into drm...

[firefly-linux-kernel-4.4.55.git] / include / linux / ptrace.h

diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 077904c8b70de8a30a7f7aa1da907f517c8cbe5e..cc79eff4a1adbbf1d9afce2d59d81b65410d7018 100644 (file)
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -334,6 +334,9 @@ static inline void user_single_step_siginfo(struct task_struct *tsk,
  * calling arch_ptrace_stop() when it would be superfluous.  For example,
  * if the thread has not been back to user mode since the last stop, the
  * thread state might indicate that nothing needs to be done.
+ *
+ * This is guaranteed to be invoked once before a task stops for ptrace and
+ * may include arch-specific operations necessary prior to a ptrace stop.
  */
 #define arch_ptrace_stop_needed(code, info)    (0)
 #endif