[PATCH 02/11] libvirt: Add virDomainSetVcpuDirtyLimit API
huangy81 at chinatelecom.cn
huangy81 at chinatelecom.cn
Sat Aug 13 16:31:14 UTC 2022
From: Hyman Huang(黄勇) <huangy81 at chinatelecom.cn>
Introduce virDomainSetVcpuDirtyLimit API to set upper limit
of dirty page rate.
Signed-off-by: Hyman Huang(黄勇) <huangy81 at chinatelecom.cn>
---
include/libvirt/libvirt-domain.h | 16 +++++++++++++
src/driver-hypervisor.h | 7 ++++++
src/libvirt-domain.c | 51 ++++++++++++++++++++++++++++++++++++++++
src/libvirt_public.syms | 5 ++++
src/remote/remote_driver.c | 1 +
src/remote/remote_protocol.x | 16 +++++++++++--
src/remote_protocol-structs | 7 ++++++
7 files changed, 101 insertions(+), 2 deletions(-)
diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
index 7430a08..b0bd2f1 100644
--- a/include/libvirt/libvirt-domain.h
+++ b/include/libvirt/libvirt-domain.h
@@ -6452,4 +6452,20 @@ int virDomainStartDirtyRateCalc(virDomainPtr domain,
int seconds,
unsigned int flags);
+/**
+ * virDomainDirtyLimitFlags:
+ *
+ * Since: 8.7.0
+ */
+typedef enum {
+ VIR_DOMAIN_DIRTYLIMIT_VCPU = 0, /* render specified virtual CPU for
+ dirty page rate limit (Since: 8.7.0) */
+ VIR_DOMAIN_DIRTYLIMIT_ALL = 1 << 0, /* render all virtual CPU for dirty
+ page rate limit (Since: 8.7.0) */
+} virDomainDirtyLimitFlags;
+
+int virDomainSetVcpuDirtyLimit(virDomainPtr domain,
+ int vcpu,
+ unsigned long long rate,
+ unsigned int flags);
#endif /* LIBVIRT_DOMAIN_H */
diff --git a/src/driver-hypervisor.h b/src/driver-hypervisor.h
index 016d5ce..ac59da6 100644
--- a/src/driver-hypervisor.h
+++ b/src/driver-hypervisor.h
@@ -1441,6 +1441,12 @@ typedef int
int seconds,
unsigned int flags);
+typedef int
+(*virDrvDomainSetVcpuDirtyLimit)(virDomainPtr domain,
+ int vcpu,
+ unsigned long long rate,
+ unsigned int flags);
+
typedef struct _virHypervisorDriver virHypervisorDriver;
/**
@@ -1712,4 +1718,5 @@ struct _virHypervisorDriver {
virDrvDomainAuthorizedSSHKeysSet domainAuthorizedSSHKeysSet;
virDrvDomainGetMessages domainGetMessages;
virDrvDomainStartDirtyRateCalc domainStartDirtyRateCalc;
+ virDrvDomainSetVcpuDirtyLimit domainSetVcpuDirtyLimit;
};
diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c
index 842663a..be9825b 100644
--- a/src/libvirt-domain.c
+++ b/src/libvirt-domain.c
@@ -13929,3 +13929,54 @@ virDomainStartDirtyRateCalc(virDomainPtr domain,
virDispatchError(conn);
return -1;
}
+
+/**
+ * virDomainSetVcpuDirtyLimit:
+ * @domain: pointer to domain object, or NULL for Domain0
+ * @vcpu: (optional) virtual CPU number
+ * @rate: upper limit of dirty page rate (MB/s) for virtual CPUs
+ * @flags: bitwise-OR of supported virDomainDirtyLimitFlags
+ *
+ * Dynamically set the upper dirty page rate limit of the virtual CPUs.
+ *
+ * Returns 0 in case of success, -1 in case of failure.
+ *
+ * Since: 8.7.0
+ */
+int
+virDomainSetVcpuDirtyLimit(virDomainPtr domain,
+ int vcpu,
+ unsigned long long rate,
+ unsigned int flags)
+{
+ virConnectPtr conn;
+
+ VIR_DOMAIN_DEBUG(domain, "vcpu=%d, dirty page rate limit=%lld",
+ vcpu, rate);
+
+ virResetLastError();
+
+ virCheckDomainReturn(domain, -1);
+ conn = domain->conn;
+
+ virCheckReadOnlyGoto(conn->flags, error);
+ virCheckPositiveArgGoto(rate, error);
+
+ VIR_EXCLUSIVE_FLAGS_GOTO(VIR_DOMAIN_DIRTYLIMIT_VCPU,
+ VIR_DOMAIN_DIRTYLIMIT_ALL,
+ error);
+
+ if (conn->driver->domainSetVcpuDirtyLimit) {
+ int ret;
+ ret = conn->driver->domainSetVcpuDirtyLimit(domain, vcpu, rate, flags);
+ if (ret < 0)
+ goto error;
+ return ret;
+ }
+
+ virReportUnsupportedError();
+
+ error:
+ virDispatchError(domain->conn);
+ return -1;
+}
diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms
index 297a2c4..8ebcf50 100644
--- a/src/libvirt_public.syms
+++ b/src/libvirt_public.syms
@@ -927,4 +927,9 @@ LIBVIRT_8.5.0 {
virDomainAbortJobFlags;
} LIBVIRT_8.4.0;
+LIBVIRT_8.7.0 {
+ global:
+ virDomainSetVcpuDirtyLimit;
+} LIBVIRT_8.5.0;
+
# .... define new API here using predicted next version number ....
diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c
index 0ca365c..f673fed 100644
--- a/src/remote/remote_driver.c
+++ b/src/remote/remote_driver.c
@@ -8652,6 +8652,7 @@ static virHypervisorDriver hypervisor_driver = {
.domainGetMessages = remoteDomainGetMessages, /* 7.1.0 */
.domainStartDirtyRateCalc = remoteDomainStartDirtyRateCalc, /* 7.2.0 */
.domainSetLaunchSecurityState = remoteDomainSetLaunchSecurityState, /* 8.0.0 */
+ .domainSetVcpuDirtyLimit = remoteDomainSetVcpuDirtyLimit, /* 8.7.0 */
};
static virNetworkDriver network_driver = {
diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x
index 79ffc63..e6c18a4 100644
--- a/src/remote/remote_protocol.x
+++ b/src/remote/remote_protocol.x
@@ -3921,7 +3921,6 @@ struct remote_domain_start_dirty_rate_calc_args {
unsigned int flags;
};
-
struct remote_domain_event_memory_device_size_change_msg {
int callbackID;
remote_nonnull_domain dom;
@@ -3929,6 +3928,13 @@ struct remote_domain_event_memory_device_size_change_msg {
unsigned hyper size;
};
+struct remote_domain_set_vcpu_dirty_limit_args {
+ remote_nonnull_domain dom;
+ int vcpu;
+ unsigned hyper rate;
+ unsigned int flags;
+};
+
/*----- Protocol. -----*/
/* Define the program number, protocol version and procedure numbers here. */
@@ -6959,5 +6965,11 @@ enum remote_procedure {
* @generate: both
* @acl: domain:write
*/
- REMOTE_PROC_DOMAIN_ABORT_JOB_FLAGS = 442
+ REMOTE_PROC_DOMAIN_ABORT_JOB_FLAGS = 442,
+
+ /**
+ * @generate: both
+ * @acl: domain:write
+ */
+ REMOTE_PROC_DOMAIN_SET_VCPU_DIRTY_LIMIT = 443
};
diff --git a/src/remote_protocol-structs b/src/remote_protocol-structs
index ca52224..8ff2a86 100644
--- a/src/remote_protocol-structs
+++ b/src/remote_protocol-structs
@@ -3268,6 +3268,12 @@ struct remote_domain_event_memory_device_size_change_msg {
remote_nonnull_string alias;
uint64_t size;
};
+struct remote_domain_set_vcpu_dirty_limit_args {
+ remote_nonnull_domain dom;
+ int vcpu;
+ uint64_t rate;
+ u_int flags;
+};
enum remote_procedure {
REMOTE_PROC_CONNECT_OPEN = 1,
REMOTE_PROC_CONNECT_CLOSE = 2,
@@ -3711,4 +3717,5 @@ enum remote_procedure {
REMOTE_PROC_DOMAIN_SAVE_PARAMS = 440,
REMOTE_PROC_DOMAIN_RESTORE_PARAMS = 441,
REMOTE_PROC_DOMAIN_ABORT_JOB_FLAGS = 442,
+ REMOTE_PROC_DOMAIN_SET_VCPU_DIRTY_LIMIT = 443,
};
--
1.8.3.1
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