perf: Add generic exclude_guest support

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Only KVM knows the exact time when a guest is entering/exiting. Expose
two interfaces to KVM to switch the ownership of the PMU resources.

All the pinned events must be scheduled in first. Extend the
perf_event_sched_in() helper to support extra flag, e.g., EVENT_GUEST.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Mingwei Zhang <mizhang@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Xudong Hao <xudong.hao@intel.com>
Link: https://patch.msgid.link/20251206001720.468579-3-seanjc@google.com

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Kan Liang 2025-12-05 16:16:38 -08:00 • committed by Peter Zijlstra

parent b825444b61

commit b9e52b11d2

1 changed files with 8 additions and 7 deletions

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kernel/events/core.c

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