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Message-ID: <tip-4138960a9251a265002b5cf07e671a49f8495381@git.kernel.org>
Date:	Wed, 29 Apr 2009 13:03:53 GMT
From:	tip-bot for Robert Richter <robert.richter@....com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, paulus@...ba.org, hpa@...or.com,
	mingo@...hat.com, robert.richter@....com, a.p.zijlstra@...llo.nl,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perfcounters/core] perf_counter, x86: add default path to cpu detection

Commit-ID:  4138960a9251a265002b5cf07e671a49f8495381
Gitweb:     http://git.kernel.org/tip/4138960a9251a265002b5cf07e671a49f8495381
Author:     Robert Richter <robert.richter@....com>
AuthorDate: Wed, 29 Apr 2009 12:47:00 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Wed, 29 Apr 2009 14:51:01 +0200

perf_counter, x86: add default path to cpu detection

This quits hw counter initialization immediately if no cpu is
detected.

[ Impact: cleanup ]

Signed-off-by: Robert Richter <robert.richter@....com>
Cc: Paul Mackerras <paulus@...ba.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
LKML-Reference: <1241002046-8832-4-git-send-email-robert.richter@....com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 arch/x86/kernel/cpu/perf_counter.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index 7d0f81d..d6d6529 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -997,6 +997,8 @@ void __init init_hw_perf_counters(void)
 	case X86_VENDOR_AMD:
 		pmc_ops = pmc_amd_init();
 		break;
+	default:
+		return;
 	}
 	if (!pmc_ops)
 		return;
--
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