[libvirt] [PATCHv8 01/17] docs, util: Refactor schemas and virresctrl to support optional cache

[John Ferlan]

On 11/12/18 8:31 AM, Wang Huaqiang wrote:
> Refactor schemas and virresctrl to support optional <cache> element
> in <cachetune>.
> 
> Later, the monitor entry will be introduced and to be placed
> under <cachetune>. Either cache entry or monitor entry is
> an optional element of <cachetune>.
> 
> An cachetune has no <cache> element is taking the default resource
> allocating policy defined in '/sys/fs/resctrl/schemata'.
> 
> Signed-off-by: Wang Huaqiang <huaqiang.wang at intel.com>
> ---
>  docs/formatdomain.html.in     |  4 ++--
>  docs/schemas/domaincommon.rng |  4 ++--
>  src/util/virresctrl.c         | 27 +++++++++++++++++++++++++++
>  3 files changed, 31 insertions(+), 4 deletions(-)
> 

[...]

> diff --git a/src/util/virresctrl.c b/src/util/virresctrl.c
> index 5d811a2..7339e9b 100644
> --- a/src/util/virresctrl.c
> +++ b/src/util/virresctrl.c

[...]

> @@ -2302,6 +2320,11 @@ virResctrlAllocAddPID(virResctrlAllocPtr alloc,
>      char *pidstr = NULL;
>      int ret = 0;
>  
> +    /* If allocation is empty, then no resctrl directory and the 'tasks' file
> +     * exists, just return */

    /* If the allocation is empty, then it is impossible to add a PID to
     * allocation due to lacking of its 'tasks' file so just return */

> +    if (virResctrlAllocIsEmpty(alloc))
> +        return 0;
> +
>      if (!alloc->path) {
>          virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
>                         _("Cannot add pid to non-existing resctrl allocation"));
> @@ -2334,6 +2357,10 @@ virResctrlAllocRemove(virResctrlAllocPtr alloc)
>  {
>      int ret = 0;
>  
> +    /* Do not destroy if path is the system/default path for the allocation */
> +    if (STREQ(alloc->path, SYSFS_RESCTRL_PATH))
> +        return 0;
> +

You added this backwards, must go below the following:

>      if (!alloc->path)
>          return 0;
>  
> 

With those changes,

Reviewed-by: John Ferlan <jferlan at redhat.com>
(As with the rest, I can make the changes for you).


John