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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2010-11-25 18:38:29 +0100
committerIngo Molnar <mingo@elte.hu>2010-11-26 15:14:56 +0100
commit004417a6d468e24399e383645c068b498eed84ad (patch)
treece3f4ea25186080faec7a7be6648b177e526c436 /init
parent5ef428c4b5950dddce7311e84321abb3aff7ebb0 (diff)
downloadlinux-2.6.38-lt-ux500-004417a6d468e24399e383645c068b498eed84ad.tar.gz
perf, arch: Cleanup perf-pmu init vs lockup-detector
The perf hardware pmu got initialized at various points in the boot, some before early_initcall() some after (notably arch_initcall). The problem is that the NMI lockup detector is ran from early_initcall() and expects the hardware pmu to be present. Sanitize this by moving all architecture hardware pmu implementations to initialize at early_initcall() and move the lockup detector to an explicit initcall right after that. Cc: paulus <paulus@samba.org> Cc: davem <davem@davemloft.net> Cc: Michael Cree <mcree@orcon.net.nz> Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1290707759.2145.119.camel@laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'init')
-rw-r--r--init/main.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/init/main.c b/init/main.c
index 8646401f7a0..261ad7b3fe0 100644
--- a/init/main.c
+++ b/init/main.c
@@ -882,6 +882,7 @@ static int __init kernel_init(void * unused)
smp_prepare_cpus(setup_max_cpus);
do_pre_smp_initcalls();
+ lockup_detector_init();
smp_init();
sched_init_smp();