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authorIngo Molnar <mingo@elte.hu>2007-04-06 21:18:06 +0200
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-04-07 10:06:51 -0700
commit35f6f753b79705bc4b62da5dcc218d75ffa88370 (patch)
treefae64e1ebcc00b2768689a3e24f956ce0a431513 /kernel
parent7f30e49ee1c2c1e95ce9d2ccce5221ddb793dd60 (diff)
downloadlinux-linaro-stable-35f6f753b79705bc4b62da5dcc218d75ffa88370.tar.gz
[PATCH] sched: get rid of p->children use in show_task()
the p->parent PID printout gives us all the information about the task tree that we need - the eldest_child()/older_sibling()/ younger_sibling() printouts are mostly historic and i do not remember ever having used those fields. (IMO in fact they confuse the SysRq-T output.) So remove them. This code has sentimental value though, those fields and printouts are one of the oldest ones still surviving from Linux v0.95's kernel/sched.c: if (p->p_ysptr || p->p_osptr) printk(" Younger sib=%d, older sib=%d\n\r", p->p_ysptr ? p->p_ysptr->pid : -1, p->p_osptr ? p->p_osptr->pid : -1); else printk("\n\r"); written 15 years ago, in early 1992. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus 'snif' Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched.c35
1 files changed, 1 insertions, 34 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index a4ca632c477c..cdad3b04242a 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4687,27 +4687,6 @@ out_unlock:
return retval;
}
-static inline struct task_struct *eldest_child(struct task_struct *p)
-{
- if (list_empty(&p->children))
- return NULL;
- return list_entry(p->children.next,struct task_struct,sibling);
-}
-
-static inline struct task_struct *older_sibling(struct task_struct *p)
-{
- if (p->sibling.prev==&p->parent->children)
- return NULL;
- return list_entry(p->sibling.prev,struct task_struct,sibling);
-}
-
-static inline struct task_struct *younger_sibling(struct task_struct *p)
-{
- if (p->sibling.next==&p->parent->children)
- return NULL;
- return list_entry(p->sibling.next,struct task_struct,sibling);
-}
-
static const char stat_nam[] = "RSDTtZX";
static void show_task(struct task_struct *p)
@@ -4738,19 +4717,7 @@ static void show_task(struct task_struct *p)
free = (unsigned long)n - (unsigned long)end_of_stack(p);
}
#endif
- printk("%5lu %5d %6d ", free, p->pid, p->parent->pid);
- if ((relative = eldest_child(p)))
- printk("%5d ", relative->pid);
- else
- printk(" ");
- if ((relative = younger_sibling(p)))
- printk("%7d", relative->pid);
- else
- printk(" ");
- if ((relative = older_sibling(p)))
- printk(" %5d", relative->pid);
- else
- printk(" ");
+ printk("%5lu %5d %6d", free, p->pid, p->parent->pid);
if (!p->mm)
printk(" (L-TLB)\n");
else