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| author | Vitaly Kuznetsov <[email protected]> | 2021-09-03 09:51:41 +0200 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2021-09-30 04:27:04 -0400 |
| commit | 620b2438abf98f09e19802cbc3bc2e98179cdbe2 (patch) | |
| tree | 27b1d04b869efb98267ae18f4fed3c6e75cf2580 /tools/perf/scripts/python/flamegraph.py | |
| parent | baff59ccdc657d290be51b95b38ebe5de40036b4 (diff) | |
KVM: Make kvm_make_vcpus_request_mask() use pre-allocated cpu_kick_mask
kvm_make_vcpus_request_mask() already disables preemption so just like
kvm_make_all_cpus_request_except() it can be switched to using
pre-allocated per-cpu cpumasks. This allows for improvements for both
users of the function: in Hyper-V emulation code 'tlb_flush' can now be
dropped from 'struct kvm_vcpu_hv' and kvm_make_scan_ioapic_request_mask()
gets rid of dynamic allocation.
cpumask_available() checks in kvm_make_vcpu_request() and
kvm_kick_many_cpus() can now be dropped as they checks for an impossible
condition: kvm_init() makes sure per-cpu masks are allocated.
Signed-off-by: Vitaly Kuznetsov <[email protected]>
Reviewed-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/flamegraph.py')
0 files changed, 0 insertions, 0 deletions