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| author | Hyman Huang(黄勇) | 2022-06-25 19:38:31 +0200 |
|---|---|---|
| committer | Dr. David Alan Gilbert | 2022-07-20 13:15:08 +0200 |
| commit | ab1a161fe36be08eb1fbd0bc404e51a99e9d1471 (patch) | |
| tree | f48f0f11a9c8fdcb8f8a2cf6d607297ae517dee8 /cpus-common.c | |
| parent | accel/kvm/kvm-all: Refactor per-vcpu dirty ring reaping (diff) | |
| download | qemu-ab1a161fe36be08eb1fbd0bc404e51a99e9d1471.tar.gz qemu-ab1a161fe36be08eb1fbd0bc404e51a99e9d1471.tar.xz qemu-ab1a161fe36be08eb1fbd0bc404e51a99e9d1471.zip | |
cpus: Introduce cpu_list_generation_id
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>
Diffstat (limited to 'cpus-common.c')
| -rw-r--r-- | cpus-common.c | 8 |
1 files changed, 8 insertions, 0 deletions
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) |