linux-kernel - [PATCH] show_task: real

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Message-Id: <20080109080323.8FCDC26F9A7@magilla.localdomain>
Date:	Wed,  9 Jan 2008 00:03:23 -0800 (PST)
From:	Roland McGrath <roland@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] show_task: real_parent


The show_task function invoked by sysrq-t et al displays the
pid and parent's pid of each task.  It seems more useful to
show the actual process hierarchy here than who is using
ptrace on each process.

Signed-off-by: Roland McGrath <roland@...hat.com>
---
 kernel/sched.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index 3df84ea..37cf07a 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4918,7 +4918,7 @@ static void show_task(struct task_struct *p)
 	}
 #endif
 	printk(KERN_CONT "%5lu %5d %6d\n", free,
-		task_pid_nr(p), task_pid_nr(p->parent));
+		task_pid_nr(p), task_pid_nr(p->real_parent));
 
 	if (state != TASK_RUNNING)
 		show_stack(p, NULL);
--
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