[tip:perfcounters/core] perf_counter, x86: add default path to cpu detection

tip-bot for Robert Richter
2009-04-29T13:04:58Z

Commit-ID: 4138960a9251a265002b5cf07e671a49f8495381
Gitweb: http://git.kernel.org/tip/4138960a9251a265002b5cf07e671a49f8495381
Author: Robert Richter <robert.richter@amd.com>
AuthorDate: Wed, 29 Apr 2009 12:47:00 +0200
Committer: Ingo Molnar <mingo@elte.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@amd.com>
Cc: Paul Mackerras <paulus@samba.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1241002046-8832-4-git-send-email-robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.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;