[PATCH v6 1/5] migration/dirtyrate: Introduce virDomainStartDirtyRateCalc API
Michal Privoznik
mprivozn at redhat.com
Wed Mar 3 11:32:08 UTC 2021
On 2/26/21 9:35 AM, Hao Wang wrote:
> Introduce virDomainStartDirtyRateCalc API for start calculation of
> a domain's memory dirty rate with a specified time.
>
> Signed-off-by: Hao Wang <wanghao232 at huawei.com>
> ---
> include/libvirt/libvirt-domain.h | 4 +++
> src/driver-hypervisor.h | 6 +++++
> src/libvirt-domain.c | 44 ++++++++++++++++++++++++++++++++
> src/libvirt_public.syms | 5 ++++
> src/remote/remote_driver.c | 1 +
> src/remote/remote_protocol.x | 14 +++++++++-
> src/remote_protocol-structs | 6 +++++
> 7 files changed, 79 insertions(+), 1 deletion(-)
>
> diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c
> index 4af0166872..b1cc2ebbf3 100644
> --- a/src/libvirt-domain.c
> +++ b/src/libvirt-domain.c
> @@ -13154,3 +13154,47 @@ virDomainGetMessages(virDomainPtr domain,
> virDispatchError(conn);
> return -1;
> }
> +
> +
> +/**
> + * virDomainStartDirtyRateCalc:
> + * @domain: a domain object
> + * @seconds: specified calculating time in seconds
> + * @flags: extra flags; not used yet, so callers should always pass 0
> + *
> + * Calculate the current domain's memory dirty rate in next @seconds.
> + * The calculated dirty rate infomation is available by calling
information
> + * virConnectGetAllDomainStats.
> + *
> + * Returns 0 in case of success, -1 otherwise.
> + */
> +int
> +virDomainStartDirtyRateCalc(virDomainPtr domain,
> + int seconds,
> + unsigned int flags)
> +{
> + virConnectPtr conn;
> +
> + VIR_DOMAIN_DEBUG(domain, "seconds=%d, flags=0x%x", seconds, flags);
> +
> + virResetLastError();
> +
> + virCheckDomainReturn(domain, -1);
> + conn = domain->conn;
> +
> + virCheckReadOnlyGoto(conn->flags, error);
> +
> + if (conn->driver->domainStartDirtyRateCalc) {
> + int ret;
> + ret = conn->driver->domainStartDirtyRateCalc(domain, seconds, flags);
> + if (ret < 0)
> + goto error;
> + return ret;
> + }
> +
> + virReportUnsupportedError();
> +
> + error:
> + virDispatchError(conn);
> + return -1;
> +}
Michal
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