linux-kernel - [PATCH 1/2 v2.0]sched: Removing unused fields from /proc/schedstat

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Message-ID: <4D3F3676.1030601@linux.vnet.ibm.com>
Date:	Wed, 26 Jan 2011 02:15:42 +0530
From:	Ciju Rajan K <ciju@...ux.vnet.ibm.com>
To:	linux kernel mailing list <linux-kernel@...r.kernel.org>
CC:	Ciju Rajan K <ciju@...ux.vnet.ibm.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Bharata B Rao <bharata@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Srivatsa Vaddagiri <vatsa@...ibm.com>,
	Satoru Takeuchi <takeuchi_satoru@...fujitsu.com>
Subject: [PATCH 1/2 v2.0]sched: Removing unused fields from /proc/schedstat


sched: Updating the fields of /proc/schedstat 

This patch removes the unused statistics from /proc/schedstat. 
Also updates the request queue structure fields. 

Signed-off-by: Ciju Rajan K <ciju@...ux.vnet.ibm.com>


diff --git a/include/linux/sched.h b/include/linux/sched.h
index d747f94..1c0ac12 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -954,20 +954,9 @@ struct sched_domain {
 	unsigned int alb_failed;
 	unsigned int alb_pushed;
 
-	/* SD_BALANCE_EXEC stats */
-	unsigned int sbe_count;
-	unsigned int sbe_balanced;
-	unsigned int sbe_pushed;
-
-	/* SD_BALANCE_FORK stats */
-	unsigned int sbf_count;
-	unsigned int sbf_balanced;
-	unsigned int sbf_pushed;
-
 	/* try_to_wake_up() stats */
 	unsigned int ttwu_wake_remote;
 	unsigned int ttwu_move_affine;
-	unsigned int ttwu_move_balance;
 #endif
 #ifdef CONFIG_SCHED_DEBUG
 	char *name;
diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c
index eb6cb8e..99893be 100644
--- a/kernel/sched_debug.c
+++ b/kernel/sched_debug.c
@@ -286,7 +286,6 @@ static void print_cpu(struct seq_file *m, int cpu)
 
 	P(yld_count);
 
-	P(sched_switch);
 	P(sched_count);
 	P(sched_goidle);
 #ifdef CONFIG_SMP
diff --git a/kernel/sched_stats.h b/kernel/sched_stats.h
index 48ddf43..8869ed9 100644
--- a/kernel/sched_stats.h
+++ b/kernel/sched_stats.h
@@ -4,7 +4,7 @@
  * bump this up when changing the output format or the meaning of an existing
  * format, so that tools can adapt (or abort)
  */
-#define SCHEDSTAT_VERSION 15
+#define SCHEDSTAT_VERSION 16
 
 static int show_schedstat(struct seq_file *seq, void *v)
 {
@@ -26,9 +26,9 @@ static int show_schedstat(struct seq_file *seq, void *v)
 
 		/* runqueue-specific stats */
 		seq_printf(seq,
-		    "cpu%d %u %u %u %u %u %u %llu %llu %lu",
+		    "cpu%d %u %u %u %u %u %llu %llu %lu",
 		    cpu, rq->yld_count,
-		    rq->sched_switch, rq->sched_count, rq->sched_goidle,
+		    rq->sched_count, rq->sched_goidle,
 		    rq->ttwu_count, rq->ttwu_local,
 		    rq->rq_cpu_time,
 		    rq->rq_sched_info.run_delay, rq->rq_sched_info.pcount);
@@ -57,12 +57,9 @@ static int show_schedstat(struct seq_file *seq, void *v)
 				    sd->lb_nobusyg[itype]);
 			}
 			seq_printf(seq,
-				   " %u %u %u %u %u %u %u %u %u %u %u %u\n",
+				   " %u %u %u %u %u\n",
 			    sd->alb_count, sd->alb_failed, sd->alb_pushed,
-			    sd->sbe_count, sd->sbe_balanced, sd->sbe_pushed,
-			    sd->sbf_count, sd->sbf_balanced, sd->sbf_pushed,
-			    sd->ttwu_wake_remote, sd->ttwu_move_affine,
-			    sd->ttwu_move_balance);
+			    sd->ttwu_wake_remote, sd->ttwu_move_affine);
 		}
 		preempt_enable();
 #endif
--
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