[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PULL 02/29] cpus: Introduce cpu_list_generation_id
From: |
Dr. David Alan Gilbert (git) |
Subject: |
[PULL 02/29] cpus: Introduce cpu_list_generation_id |
Date: |
Tue, 19 Jul 2022 18:01:54 +0100 |
From: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
Introduce cpu_list_generation_id to track cpu list generation so
that cpu hotplug/unplug can be detected during measurement of
dirty page rate.
cpu_list_generation_id could be used to detect changes of cpu
list, which is prepared for dirty page rate measurement.
Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-Id:
<06e1f1362b2501a471dce796abb065b04f320fa5.1656177590.git.huangy81@chinatelecom.cn>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
cpus-common.c | 8 ++++++++
include/exec/cpu-common.h | 1 +
2 files changed, 9 insertions(+)
diff --git a/cpus-common.c b/cpus-common.c
index db459b41ce..793364dc0e 100644
--- a/cpus-common.c
+++ b/cpus-common.c
@@ -73,6 +73,12 @@ static int cpu_get_free_index(void)
}
CPUTailQ cpus = QTAILQ_HEAD_INITIALIZER(cpus);
+static unsigned int cpu_list_generation_id;
+
+unsigned int cpu_list_generation_id_get(void)
+{
+ return cpu_list_generation_id;
+}
void cpu_list_add(CPUState *cpu)
{
@@ -84,6 +90,7 @@ void cpu_list_add(CPUState *cpu)
assert(!cpu_index_auto_assigned);
}
QTAILQ_INSERT_TAIL_RCU(&cpus, cpu, node);
+ cpu_list_generation_id++;
}
void cpu_list_remove(CPUState *cpu)
@@ -96,6 +103,7 @@ void cpu_list_remove(CPUState *cpu)
QTAILQ_REMOVE_RCU(&cpus, cpu, node);
cpu->cpu_index = UNASSIGNED_CPU_INDEX;
+ cpu_list_generation_id++;
}
CPUState *qemu_get_cpu(int index)
diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h
index 5968551a05..2281be4e10 100644
--- a/include/exec/cpu-common.h
+++ b/include/exec/cpu-common.h
@@ -35,6 +35,7 @@ extern intptr_t qemu_host_page_mask;
void qemu_init_cpu_list(void);
void cpu_list_lock(void);
void cpu_list_unlock(void);
+unsigned int cpu_list_generation_id_get(void);
void tcg_flush_softmmu_tlb(CPUState *cs);
--
2.36.1
- [PULL 00/29] migration queue, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 03/29] migration/dirtyrate: Refactor dirty page rate calculation, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 01/29] accel/kvm/kvm-all: Refactor per-vcpu dirty ring reaping, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 04/29] softmmu/dirtylimit: Implement vCPU dirtyrate calculation periodically, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 02/29] cpus: Introduce cpu_list_generation_id,
Dr. David Alan Gilbert (git) <=
- [PULL 08/29] tests: Add dirty page rate limit test, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 06/29] softmmu/dirtylimit: Implement virtual CPU throttle, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 09/29] multifd: Copy pages before compressing them with zlib, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 07/29] softmmu/dirtylimit: Implement dirty page rate limit, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 11/29] migration: Postcopy preemption preparation on channel creation, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 17/29] migration: Export tls-[creds|hostname|authz] params to cmdline too, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 13/29] migration: Postcopy recover with preempt enabled, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 05/29] accel/kvm/kvm-all: Introduce kvm_dirty_ring_size function, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 16/29] migration: Add helpers to detect TLS capability, Dr. David Alan Gilbert (git), 2022/07/19
- [PULL 12/29] migration: Postcopy preemption enablement, Dr. David Alan Gilbert (git), 2022/07/19