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authorCyrill Gorcunov <gorcunov@openvz.org>2009-12-10 19:56:34 +0300
committerIngo Molnar <mingo@elte.hu>2009-12-10 18:00:30 +0100
commit125580380f418000b1a06d9a54700f1191b6e561 (patch)
tree86254f20e7a7931eab94c653720cc2c0b22ffbb5 /samples
parentperf_event: Fix variable initialization in other codepaths (diff)
downloadlinux-dev-125580380f418000b1a06d9a54700f1191b6e561.tar.xz
linux-dev-125580380f418000b1a06d9a54700f1191b6e561.zip
x86, perf events: Check if we have APIC enabled
Ralf Hildebrandt reported this boot warning: | Running a vanilla 2.6.32 as Xen DomU, I'm getting: | | [ 0.000999] CPU: Physical Processor ID: 0 | [ 0.000999] CPU: Processor Core ID: 1 | [ 0.000999] Performance Events: AMD PMU driver. | [ 0.000999] ------------[ cut here ]------------ | [ 0.000999] WARNING: at arch/x86/kernel/apic/apic.c:249 native_apic_write_dummy So we need to check if APIC functionality is available, and not just in the P6 driver but elsewhere as well. Reported-by: Ralf Hildebrandt <Ralf.Hildebrandt@charite.de> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091210165634.GF5086@lenovo> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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