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perf, core: Introduce attrs to count in either host or guest mode
The two new attributes exclude_guest and exclude_host can bes used by user-space to tell the kernel to setup performance counter to either only count while the CPU is in guest or in host mode. An additional check is also introduced to make sure user-space does not try to exclude guest and host mode from counting. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1317816084-18026-2-git-send-email-gleb@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -220,7 +220,10 @@ struct perf_event_attr {
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mmap_data : 1, /* non-exec mmap data */
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sample_id_all : 1, /* sample_type all events */
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__reserved_1 : 45;
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exclude_host : 1, /* don't count in host */
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exclude_guest : 1, /* don't count in guest */
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__reserved_1 : 43;
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union {
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__u32 wakeup_events; /* wakeup every n events */
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