From 5cf92e9a8fb63cff15027fd6a738d455b4efcd1a Mon Sep 17 00:00:00 2001
From: Mike Travis <travis@sgi.com>
Date: Tue, 17 Nov 2009 18:22:13 -0600
Subject: timers, init: Limit the number of per cpu calibration bootup messages

commit feae3203d711db0a9965300ee6d592257fdaae4f upstream.

Limit the number of per cpu calibration messages by only
printing out results for the first cpu to boot.

Also, don't print "CPUx is down" as this is expected, and we
don't need 4096 reminders... ;-)

Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Roland Dreier <rdreier@cisco.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20091118002219.889552000@alcatraz.americas.sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 init/calibrate.c | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

(limited to 'init')

diff --git a/init/calibrate.c b/init/calibrate.c
index a379c906119..6eb48e53d61 100644
--- a/init/calibrate.c
+++ b/init/calibrate.c
@@ -123,23 +123,26 @@ void __cpuinit calibrate_delay(void)
 {
 	unsigned long ticks, loopbit;
 	int lps_precision = LPS_PREC;
+	static bool printed;
 
 	if (preset_lpj) {
 		loops_per_jiffy = preset_lpj;
-		printk(KERN_INFO
-			"Calibrating delay loop (skipped) preset value.. ");
-	} else if ((smp_processor_id() == 0) && lpj_fine) {
+		if (!printed)
+			pr_info("Calibrating delay loop (skipped) "
+				"preset value.. ");
+	} else if ((!printed) && lpj_fine) {
 		loops_per_jiffy = lpj_fine;
-		printk(KERN_INFO
-			"Calibrating delay loop (skipped), "
+		pr_info("Calibrating delay loop (skipped), "
 			"value calculated using timer frequency.. ");
 	} else if ((loops_per_jiffy = calibrate_delay_direct()) != 0) {
-		printk(KERN_INFO
-			"Calibrating delay using timer specific routine.. ");
+		if (!printed)
+			pr_info("Calibrating delay using timer "
+				"specific routine.. ");
 	} else {
 		loops_per_jiffy = (1<<12);
 
-		printk(KERN_INFO "Calibrating delay loop... ");
+		if (!printed)
+			pr_info("Calibrating delay loop... ");
 		while ((loops_per_jiffy <<= 1) != 0) {
 			/* wait for "start of" clock tick */
 			ticks = jiffies;
@@ -170,7 +173,10 @@ void __cpuinit calibrate_delay(void)
 				loops_per_jiffy &= ~loopbit;
 		}
 	}
-	printk(KERN_CONT "%lu.%02lu BogoMIPS (lpj=%lu)\n",
+	if (!printed)
+		pr_cont("%lu.%02lu BogoMIPS (lpj=%lu)\n",
 			loops_per_jiffy/(500000/HZ),
 			(loops_per_jiffy/(5000/HZ)) % 100, loops_per_jiffy);
+
+	printed = true;
 }
-- 
cgit v1.2.3-18-g5258