linux-kernel - [tip:sched/core] sched/cpupri: Remove cpupri->pri

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Date:	Sun, 14 Aug 2011 16:13:43 GMT
From:	tip-bot for Yong Zhang <yong.zhang0@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	a.p.zijlstra@...llo.nl, yong.zhang0@...il.com, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:sched/core] sched/cpupri: Remove cpupri->pri_active

Commit-ID:  5710f15b52664ae0bfa60a66d75464769d297b2b
Gitweb:     http://git.kernel.org/tip/5710f15b52664ae0bfa60a66d75464769d297b2b
Author:     Yong Zhang <yong.zhang0@...il.com>
AuthorDate: Sat, 6 Aug 2011 08:10:04 +0800
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Sun, 14 Aug 2011 12:01:11 +0200

sched/cpupri: Remove cpupri->pri_active

Since [sched/cpupri: Remove the vec->lock], member pri_active
of struct cpupri is not needed any more, just remove it. Also
clean stuff related to it.

Signed-off-by: Yong Zhang <yong.zhang0@...il.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/20110806001004.GA2207@zhy
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 kernel/sched_cpupri.c |    3 +--
 kernel/sched_cpupri.h |    2 --
 2 files changed, 1 insertions(+), 4 deletions(-)

diff --git a/kernel/sched_cpupri.c b/kernel/sched_cpupri.c
index 90faffd..a86cf9d 100644
--- a/kernel/sched_cpupri.c
+++ b/kernel/sched_cpupri.c
@@ -152,8 +152,7 @@ void cpupri_set(struct cpupri *cp, int cpu, int newpri)
 	 * If the cpu was currently mapped to a different value, we
 	 * need to map it to the new value then remove the old value.
 	 * Note, we must add the new value first, otherwise we risk the
-	 * cpu being cleared from pri_active, and this cpu could be
-	 * missed for a push or pull.
+	 * cpu being missed by the priority loop in cpupri_find.
 	 */
 	if (likely(newpri != CPUPRI_INVALID)) {
 		struct cpupri_vec *vec = &cp->pri_to_cpu[newpri];
diff --git a/kernel/sched_cpupri.h b/kernel/sched_cpupri.h
index 6b4cd17..f6d7561 100644
--- a/kernel/sched_cpupri.h
+++ b/kernel/sched_cpupri.h
@@ -4,7 +4,6 @@
 #include <linux/sched.h>
 
 #define CPUPRI_NR_PRIORITIES	(MAX_RT_PRIO + 2)
-#define CPUPRI_NR_PRI_WORDS	BITS_TO_LONGS(CPUPRI_NR_PRIORITIES)
 
 #define CPUPRI_INVALID -1
 #define CPUPRI_IDLE     0
@@ -18,7 +17,6 @@ struct cpupri_vec {
 
 struct cpupri {
 	struct cpupri_vec pri_to_cpu[CPUPRI_NR_PRIORITIES];
-	long              pri_active[CPUPRI_NR_PRI_WORDS];
 	int               cpu_to_pri[NR_CPUS];
 };
 
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