linux-kernel - [tip:sched/urgent] sched/core: Remove the obsolete and unused nr

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Date:	Wed, 20 Feb 2013 06:00:32 -0800
From:	tip-bot for Sha Zhengju <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, handai.szj@...bao.com, hpa@...or.com,
	mingo@...nel.org, a.p.zijlstra@...llo.nl, tglx@...utronix.de
Subject: [tip:sched/urgent] sched/core:
  Remove the obsolete and unused nr_uninterruptible() function

Commit-ID:  1c3e826482ab698e418c7a894440e62c76aac893
Gitweb:     http://git.kernel.org/tip/1c3e826482ab698e418c7a894440e62c76aac893
Author:     Sha Zhengju <handai.szj@...bao.com>
AuthorDate: Wed, 20 Feb 2013 17:14:38 +0800
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Wed, 20 Feb 2013 11:39:24 +0100

sched/core: Remove the obsolete and unused nr_uninterruptible() function

Signed-off-by: Sha Zhengju <handai.szj@...bao.com>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1361351678-8065-1-git-send-email-handai.szj@taobao.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 include/linux/sched.h |  1 -
 kernel/sched/core.c   | 22 ++--------------------
 2 files changed, 2 insertions(+), 21 deletions(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 33cc421..f9ca237d 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -98,7 +98,6 @@ extern int nr_threads;
 DECLARE_PER_CPU(unsigned long, process_counts);
 extern int nr_processes(void);
 extern unsigned long nr_running(void);
-extern unsigned long nr_uninterruptible(void);
 extern unsigned long nr_iowait(void);
 extern unsigned long nr_iowait_cpu(int cpu);
 extern unsigned long this_cpu_load(void);
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 03d7784..b7b03cd 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1969,11 +1969,10 @@ context_switch(struct rq *rq, struct task_struct *prev,
 }
 
 /*
- * nr_running, nr_uninterruptible and nr_context_switches:
+ * nr_running and nr_context_switches:
  *
  * externally visible scheduler statistics: current number of runnable
- * threads, current number of uninterruptible-sleeping threads, total
- * number of context switches performed since bootup.
+ * threads, total number of context switches performed since bootup.
  */
 unsigned long nr_running(void)
 {
@@ -1985,23 +1984,6 @@ unsigned long nr_running(void)
 	return sum;
 }
 
-unsigned long nr_uninterruptible(void)
-{
-	unsigned long i, sum = 0;
-
-	for_each_possible_cpu(i)
-		sum += cpu_rq(i)->nr_uninterruptible;
-
-	/*
-	 * Since we read the counters lockless, it might be slightly
-	 * inaccurate. Do not allow it to go below zero though:
-	 */
-	if (unlikely((long)sum < 0))
-		sum = 0;
-
-	return sum;
-}
-
 unsigned long long nr_context_switches(void)
 {
 	int i;
--
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