Re: [Xen-devel] [PATCH v3 3/7] sysctl: Make topologyinfo and numainfo sysctls a little more efficient

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 02/13/2015 07:26 AM, Wei Liu wrote:
> On Mon, Feb 09, 2015 at 03:04:31PM -0500, Boris Ostrovsky wrote:
> > Currently both of these sysctls make a copy to userspace for each index of
> > various query arrays. We should try to copy whole arrays instead.
> >
> > This requires some changes in sysctl's public data structure, thus bump
> > interface version.
> >
> > Report topology for all present (not just online) cpus.
> >
> > Rename xen_sysctl_topologyinfo and XEN_SYSCTL_topologyinfo to reflect the fact
> > that these are used for CPU topology. Subsequent patch will add support for
> > PCI topology sysctl.
> >
> > Clarify some somments in sysctl.h.
> >
> > Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
> > ---
> >   tools/libxc/include/xenctrl.h     |    4 +-
> >   tools/libxc/xc_misc.c             |   10 ++--
> >   tools/libxl/libxl.c               |   71 +++++++------------
> >   tools/misc/xenpm.c                |   69 +++++++-----------
> >   tools/python/xen/lowlevel/xc/xc.c |   77 ++++++++------------
> Are these mostly mechanical changes? I'm assuming yes.
Pretty much, yes.

-boris


> >   xen/common/sysctl.c               |  141 ++++++++++++++++++++++---------------
> >   xen/include/public/sysctl.h       |   75 ++++++++++++--------
> >   7 files changed, 221 insertions(+), 226 deletions(-)

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