[tip:sched/core] tasks/exit: Remove unused task_is_dead() method

[tip-bot for Oleg Nesterov]

Commit-ID:  86506a99a62400e9f7b7d1344bcc9ea235faf98f
Gitweb:     http://git.kernel.org/tip/86506a99a62400e9f7b7d1344bcc9ea235faf98f
Author:     Oleg Nesterov <oleg@xxxxxxxxxx>
AuthorDate: Wed, 13 Nov 2013 15:36:14 +0100
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Wed, 27 Nov 2013 13:50:52 +0100

tasks/exit: Remove unused task_is_dead() method

task_is_dead() has no users since commit 43e13cc107cf
("cred: remove task_is_dead() from __task_cred() validation"), and
nobody except exit.c should rely on ->exit_state (we still have
the users which should be changed).

Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Signed-off-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: David Laight <David.Laight@xxxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20131113143614.GA10547@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 include/linux/sched.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 7e35d4b..cda8d63 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -168,7 +168,6 @@ extern char ___assert_task_state[1 - 2*!!(
 
 #define task_is_traced(task)	((task->state & __TASK_TRACED) != 0)
 #define task_is_stopped(task)	((task->state & __TASK_STOPPED) != 0)
-#define task_is_dead(task)	((task)->exit_state != 0)
 #define task_is_stopped_or_traced(task)	\
 			((task->state & (__TASK_STOPPED | __TASK_TRACED)) != 0)
 #define task_contributes_to_load(task)	\
--
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