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[PATCH v1 2/6] KVM: introduce dirty_pages into CPUState
From: |
huangy81 |
Subject: |
[PATCH v1 2/6] KVM: introduce dirty_pages into CPUState |
Date: |
Tue, 1 Jun 2021 01:04:06 +0800 |
From: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
dirty_pages is used to calculate dirtyrate via dirty ring, when enabled,
kvm-reaper will increase the dirty pages after gfns being dirtied.
Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
---
accel/kvm/kvm-all.c | 6 ++++++
include/hw/core/cpu.h | 2 ++
2 files changed, 8 insertions(+)
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index 2e96b77b31..52cba1b094 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -506,6 +506,9 @@ int kvm_init_vcpu(CPUState *cpu, Error **errp)
}
}
+ cpu->dirty_pages = 0;
+ cpu->stat_dirty_pages = false;
+
ret = kvm_arch_init_vcpu(cpu);
if (ret < 0) {
error_setg_errno(errp, -ret,
@@ -739,6 +742,9 @@ static uint32_t kvm_dirty_ring_reap_one(KVMState *s,
CPUState *cpu)
cur->offset);
dirty_gfn_set_collected(cur);
trace_kvm_dirty_ring_page(cpu->cpu_index, fetch, cur->offset);
+ if (cpu->stat_dirty_pages) {
+ cpu->dirty_pages++;
+ }
fetch++;
count++;
}
diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index 044f668a6e..973c193501 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -375,6 +375,8 @@ struct CPUState {
struct kvm_run *kvm_run;
struct kvm_dirty_gfn *kvm_dirty_gfns;
uint32_t kvm_fetch_index;
+ uint64_t dirty_pages;
+ bool stat_dirty_pages;
/* Used for events with 'vcpu' and *without* the 'disabled' properties */
DECLARE_BITMAP(trace_dstate_delayed, CPU_TRACE_DSTATE_MAX_EVENTS);
--
2.24.3
- [PATCH v1 0/6] support dirtyrate at the granualrity of vcpu, huangy81, 2021/05/31
- [PATCH v1 1/6] KVM: add kvm_dirty_ring_enabled function, huangy81, 2021/05/31
- [PATCH v1 2/6] KVM: introduce dirty_pages into CPUState,
huangy81 <=
- [PATCH v1 3/6] migration/dirtyrate: add vcpu option for qmp calc-dirty-rate, huangy81, 2021/05/31
- [PATCH v1 4/6] migration/dirtyrate: adjust struct DirtyRateStat, huangy81, 2021/05/31
- [PATCH v1 5/6] migration/dirtyrate: check support of calculation for vcpu, huangy81, 2021/05/31
- [PATCH v1 6/6] migration/dirtyrate: implement dirty-ring dirtyrate calculation, huangy81, 2021/05/31