[PATCH 107] cosmetic, introduce ptrace_resume_action()

[Oleg Nesterov]

No functional changes.

Move the "switch (request)" code from ptrace_resume() into the new
helper, ptrace_resume_action().

---

 kernel/ptrace.c |   26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

--- PU/kernel/ptrace.c~107_PTRACE_RESUME_ACTION	2009-10-20 17:22:27.000000000 +0200
+++ PU/kernel/ptrace.c	2009-10-20 17:55:20.000000000 +0200
@@ -1017,15 +1017,12 @@ static void do_ptrace_resume(struct utra
 	ptrace_wake_up(tracee, engine, action, true);
 }
 
-static int ptrace_resume(struct utrace_engine *engine,
-			struct task_struct *tracee, long request, long data)
+static int ptrace_resume_action(struct task_struct *tracee,
+				struct utrace_engine *engine, long request)
 {
 	struct ptrace_context *context = ptrace_context(engine);
-	enum utrace_resume_action action;
 	unsigned long events;
-
-	if (!valid_signal(data))
-		return -EIO;
+	int action;
 
 	context->options &= ~PTRACE_O_SYSEMU;
 	events = engine->flags & ~UTRACE_EVENT_SYSCALL;
@@ -1065,9 +1062,24 @@ static int ptrace_resume(struct utrace_e
 	}
 
 	if (events != engine->flags &&
-			utrace_set_events(tracee, engine, events))
+	    utrace_set_events(tracee, engine, events))
 		return -ESRCH;
 
+	return action;
+}
+
+static int ptrace_resume(struct utrace_engine *engine,
+			struct task_struct *tracee, long request, long data)
+{
+	int action;
+
+	if (!valid_signal(data))
+		return -EIO;
+
+	action = ptrace_resume_action(tracee, engine, request);
+	if (action < 0)
+		return action;
+
 	do_ptrace_resume(engine, tracee, action, request, data);
 	return 0;
 }