On Fri, Jun 10, 2011 at 03:39:38PM +0900, Taku Izumi wrote:
>
> When resetting vcpupin setting, we have to specify all host physical
> cpus as a cpulist parameter of virsh vcpupin command. It's a little
> tedious.
>
> This patch changes to allow to receive the special keyword 'r' as a cpulist
> parameter of virsh vcpupin command when resetting vcpupin setting.
>
> If you set the following:
>
> # virsh vcpupin VM 0 r
>
> the vcpu0 will be pinned to all physical cpus.
>
>
> Signed-off-by: Taku Izumi <izumi.t...@jp.fujitsu.com>
> ---
> tools/virsh.c | 7 ++++++-
> tools/virsh.pod | 2 ++
> 2 files changed, 8 insertions(+), 1 deletion(-)
>
> Index: libvirt/tools/virsh.c
> ===================================================================
> --- libvirt.orig/tools/virsh.c
> +++ libvirt/tools/virsh.c
> @@ -3010,8 +3010,13 @@ cmdVcpupin(vshControl *ctl, const vshCmd
>
> /* Parse cpulist */
> cur = cpulist;
> - if (*cur == 0)
> + if (*cur == 0) {
> goto parse_error;
> + } else if (*cur == 'r') {
> + for (cpu = 0; cpu < maxcpu; cpu++)
> + VIR_USE_CPU(cpumap, cpu);
> + *cur = 0;
> + }
>
> while (*cur != 0) {
>
> Index: libvirt/tools/virsh.pod
> ===================================================================
> --- libvirt.orig/tools/virsh.pod
> +++ libvirt/tools/virsh.pod
> @@ -797,6 +797,8 @@ Pin domain VCPUs to host physical CPUs.
> and I<cpulist> is a list of physical CPU numbers. Its syntax is a comma
> separated list and a special markup using '-' and '^' (ex. '0-4', '0-3,^2')
> can
> also be allowed. The '-' denotes the range and the '^' denotes exclusive.
> +If you want to reset vcpupin setting, that is, to pin vcpu all physical cpus,
> +simply specify 'r' as a cpulist.
> If I<--live> is specified, affect a running guest.
> If I<--config> is specified, affect the next boot of a persistent guest.
> If I<--current> is specified, affect the current guest state.
ACK, a simple usability improvement
Daniel
--
Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/
dan...@veillard.com | Rpmfind RPM search engine http://rpmfind.net/
http://veillard.com/ | virtualization library http://libvirt.org/
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