From: Juan Quintela <quintela@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Markus Armbruster" <armbru@redhat.com>,
"David Hildenbrand" <david@redhat.com>,
"Eduardo Habkost" <ehabkost@redhat.com>,
xen-devel@lists.xenproject.org,
"Richard Henderson" <richard.henderson@linaro.org>,
"Stefano Stabellini" <sstabellini@kernel.org>,
"Marcel Apfelbaum" <marcel.apfelbaum@gmail.com>,
"Eric Blake" <eblake@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>,
kvm@vger.kernel.org, "Peter Xu" <peterx@redhat.com>,
"Marc-André Lureau" <marcandre.lureau@redhat.com>,
"Paul Durrant" <paul@xen.org>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"Juan Quintela" <quintela@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Anthony Perard" <anthony.perard@citrix.com>,
"Hyman Huang(黄勇)" <huangy81@chinatelecom.cn>
Subject: [PULL 02/20] KVM: introduce dirty_pages and kvm_dirty_ring_enabled
Date: Mon, 1 Nov 2021 23:08:54 +0100 [thread overview]
Message-ID: <20211101220912.10039-3-quintela@redhat.com> (raw)
In-Reply-To: <20211101220912.10039-1-quintela@redhat.com>
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.
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>
---
include/hw/core/cpu.h | 1 +
include/sysemu/kvm.h | 1 +
accel/kvm/kvm-all.c | 7 +++++++
accel/stubs/kvm-stub.c | 5 +++++
4 files changed, 14 insertions(+)
diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index 1a10497af3..e948e81f1a 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -381,6 +381,7 @@ struct CPUState {
struct kvm_run *kvm_run;
struct kvm_dirty_gfn *kvm_dirty_gfns;
uint32_t kvm_fetch_index;
+ uint64_t dirty_pages;
/* Used for events with 'vcpu' and *without* the 'disabled' properties */
DECLARE_BITMAP(trace_dstate_delayed, CPU_TRACE_DSTATE_MAX_EVENTS);
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index a1ab1ee12d..7b22aeb6ae 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -547,4 +547,5 @@ bool kvm_cpu_check_are_resettable(void);
bool kvm_arch_cpu_check_are_resettable(void);
+bool kvm_dirty_ring_enabled(void);
#endif
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index db8d83b137..eecd8031cf 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -469,6 +469,7 @@ int kvm_init_vcpu(CPUState *cpu, Error **errp)
cpu->kvm_fd = ret;
cpu->kvm_state = s;
cpu->vcpu_dirty = true;
+ cpu->dirty_pages = 0;
mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
if (mmap_size < 0) {
@@ -743,6 +744,7 @@ static uint32_t kvm_dirty_ring_reap_one(KVMState *s, CPUState *cpu)
count++;
}
cpu->kvm_fetch_index = fetch;
+ cpu->dirty_pages += count;
return count;
}
@@ -2296,6 +2298,11 @@ bool kvm_vcpu_id_is_valid(int vcpu_id)
return vcpu_id >= 0 && vcpu_id < kvm_max_vcpu_id(s);
}
+bool kvm_dirty_ring_enabled(void)
+{
+ return kvm_state->kvm_dirty_ring_size ? true : false;
+}
+
static int kvm_init(MachineState *ms)
{
MachineClass *mc = MACHINE_GET_CLASS(ms);
diff --git a/accel/stubs/kvm-stub.c b/accel/stubs/kvm-stub.c
index 5b1d00a222..5319573e00 100644
--- a/accel/stubs/kvm-stub.c
+++ b/accel/stubs/kvm-stub.c
@@ -147,4 +147,9 @@ bool kvm_arm_supports_user_irq(void)
{
return false;
}
+
+bool kvm_dirty_ring_enabled(void)
+{
+ return false;
+}
#endif
--
2.33.1
next prev parent reply other threads:[~2021-11-01 22:09 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-01 22:08 [PULL 00/20] Migration 20211031 patches Juan Quintela
2021-11-01 22:08 ` [PULL 01/20] migration/rdma: Fix out of order wrid Juan Quintela
2021-11-01 22:08 ` Juan Quintela [this message]
2021-11-01 22:08 ` [PULL 03/20] memory: make global_dirty_tracking a bitmask Juan Quintela
2021-11-01 22:08 ` [PULL 04/20] migration/dirtyrate: introduce struct and adjust DirtyRateStat Juan Quintela
2021-11-04 20:54 ` Eric Blake
2021-11-01 22:08 ` [PULL 05/20] migration/dirtyrate: adjust order of registering thread Juan Quintela
2021-11-01 22:08 ` [PULL 06/20] migration/dirtyrate: move init step of calculation to main thread Juan Quintela
2021-11-01 22:08 ` [PULL 07/20] migration/dirtyrate: implement dirty-ring dirtyrate calculation Juan Quintela
2021-11-04 22:05 ` Philippe Mathieu-Daudé
2021-11-06 11:45 ` Juan Quintela
2021-11-01 22:09 ` [PULL 08/20] migration: Make migration blocker work for snapshots too Juan Quintela
2021-11-01 22:09 ` [PULL 09/20] migration: Add migrate_add_blocker_internal() Juan Quintela
2021-11-01 22:09 ` [PULL 10/20] dump-guest-memory: Block live migration Juan Quintela
2021-11-01 22:09 ` [PULL 11/20] memory: Introduce replay_discarded callback for RamDiscardManager Juan Quintela
2021-11-01 22:09 ` [PULL 12/20] virtio-mem: Implement replay_discarded RamDiscardManager callback Juan Quintela
2021-11-01 22:09 ` [PULL 13/20] migration/ram: Handle RAMBlocks with a RamDiscardManager on the migration source Juan Quintela
2021-11-01 22:09 ` [PULL 14/20] virtio-mem: Drop precopy notifier Juan Quintela
2021-11-01 22:09 ` [PULL 15/20] migration/postcopy: Handle RAMBlocks with a RamDiscardManager on the destination Juan Quintela
2021-11-01 22:09 ` [PULL 16/20] migration: Simplify alignment and alignment checks Juan Quintela
2021-11-01 22:09 ` [PULL 17/20] migration/ram: Factor out populating pages readable in ram_block_populate_pages() Juan Quintela
2021-11-01 22:09 ` [PULL 18/20] migration/ram: Handle RAMBlocks with a RamDiscardManager on background snapshots Juan Quintela
2021-11-01 22:09 ` [PULL 19/20] memory: introduce total_dirty_pages to stat dirty pages Juan Quintela
2021-11-01 22:09 ` [PULL 20/20] migration/dirtyrate: implement dirty-bitmap dirtyrate calculation Juan Quintela
2021-11-02 15:45 ` [PULL 00/20] Migration 20211031 patches Richard Henderson
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