linux-kernel - [tip:perfcounters/urgent] perf_counter, x86: Fix lapic printk message

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Message-ID: <tip-3c581a7f94542341bf0da496a226b44ac63521a8@git.kernel.org>
Date:	Tue, 11 Aug 2009 11:33:55 GMT
From:	tip-bot for Ingo Molnar <mingo@...e.hu>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, acme@...hat.com, paulus@...ba.org,
	hpa@...or.com, mingo@...hat.com, a.p.zijlstra@...llo.nl,
	fweisbec@...il.com, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perfcounters/urgent] perf_counter, x86: Fix lapic printk message

Commit-ID:  3c581a7f94542341bf0da496a226b44ac63521a8
Gitweb:     http://git.kernel.org/tip/3c581a7f94542341bf0da496a226b44ac63521a8
Author:     Ingo Molnar <mingo@...e.hu>
AuthorDate: Tue, 11 Aug 2009 10:47:36 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Tue, 11 Aug 2009 10:58:25 +0200

perf_counter, x86: Fix lapic printk message

Instead of this garbled bootup on UP Pentium-M systems:

[    0.015048] Performance Counters:
[    0.016004] no Local APIC, try rebooting with lapicno PMU driver, software counters only.

Print:

[    0.015050] Performance Counters:
[    0.016004] no APIC, boot with the "lapic" boot parameter to force-enable it.
[    0.017003] no PMU driver, software counters only.

Cf: Frederic Weisbecker <fweisbec@...il.com>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 arch/x86/kernel/cpu/perf_counter.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index a7aa8f9..40e233a 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -1590,7 +1590,7 @@ static int p6_pmu_init(void)
 	}
 
 	if (!cpu_has_apic) {
-		pr_info("no Local APIC, try rebooting with lapic");
+		pr_info("no APIC, boot with the \"lapic\" boot parameter to force-enable it.\n");
 		return -ENODEV;
 	}
 
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