[libvirt] [PATCH v4 5/8] perf: add new xml element

[Daniel P. Berrange]

On Mon, Mar 28, 2016 at 09:30:30PM +0800, Qiaowei Ren wrote:
> This patch adds new xml element, and so we can have the option of
> also having perf events enabled immediately at startup.
> 
> Signed-off-by: Qiaowei Ren <qiaowei.ren at intel.com>
> ---
>  docs/schemas/domaincommon.rng                 |  27 +++++++
>  src/conf/domain_conf.c                        | 111 ++++++++++++++++++++++++++
>  src/conf/domain_conf.h                        |  10 +++
>  src/qemu/qemu_driver.c                        |  26 ++++++
>  src/qemu/qemu_process.c                       |   8 +-
>  tests/domainschemadata/domain-perf-simple.xml |  20 +++++
>  6 files changed, 200 insertions(+), 2 deletions(-)


> diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
> index f7d30e9..cf7df1a 100644
> --- a/src/qemu/qemu_process.c
> +++ b/src/qemu/qemu_process.c
> @@ -5254,8 +5254,12 @@ qemuProcessLaunch(virConnectPtr conn,
>          goto cleanup;
>  
>      priv->perf = virPerfNew();
> -    if (!priv->perf)
> -        goto cleanup;
> +    if (priv->perf) {
> +        for (size_t i = 0; i < VIR_PERF_EVENT_LAST; i++) {

We don't declare variables in the for loop

> +            if (vm->def->perf->events[i] == VIR_TRISTATE_BOOL_YES)
> +                virPerfEventEnable(priv->perf, i, vm->pid);
> +        }
> +    }

Regards,
Daniel
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