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KVM: introduce dirty_pages and kvm_dirty_ring_enabled

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dirty_pages is used to calculate dirtyrate via dirty ring, when
enabled, kvm-reaper will increase the dirty pages after gfns
being dirtied.

kvm_dirty_ring_enabled shows if kvm-reaper is working. dirtyrate
thread could use it to check if measurement can base on dirty
ring feature.

Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
Message-Id: <fee5fb2ab17ec2159405fc54a3cff8e02322f816.1624040308.git.huangy81@chinatelecom.cn>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Hyman Huang(黄勇) 2021-06-29 16:01:18 +00:00 • committed by Juan Quintela
parent b390afd8c5
commit 7786ae40ba
4 changed files with 14 additions and 0 deletions
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5
accel/stubs/kvm-stub.c
View file

@ -147,4 +147,9 @@ bool kvm_arm_supports_user_irq(void)
{
return false;
}
bool kvm_dirty_ring_enabled(void)
{
return false;
}
#endif