From: Wei Liu <wei.liu2@citrix.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xenproject.org,
Ian Jackson <ian.jackson@eu.citrix.com>,
Wei Liu <wei.liu2@citrix.com>
Subject: Re: [PATCH v1 12/12] tmem: Batch and squash XEN_SYSCTL_TMEM_OP_SAVE_GET_POOL_[FLAGS, NPAGES, UUID] in one sub-call: XEN_SYSCTL_TMEM_OP_GET_POOLS.
Date: Wed, 28 Sep 2016 12:07:34 +0100 [thread overview]
Message-ID: <20160928110734.GB16004@citrix.com> (raw)
In-Reply-To: <1475055746-22401-13-git-send-email-konrad.wilk@oracle.com>
On Wed, Sep 28, 2016 at 05:42:26AM -0400, Konrad Rzeszutek Wilk wrote:
> These operations are used during the save process of migration.
> Instead of doing 64 hypercalls lets do just one. We modify
> the 'struct tmem_client' structure (used in
> XEN_SYSCTL_TMEM_OP_[GET|SET]_CLIENT_INFO) to have an extra field
> 'nr_pools'. Armed with that the code slurping up pages from the
> hypervisor can allocate a big enough structure (struct tmem_pool_info)
> to contain all the active pools. And then just iterate over each
> one and save it in the stream.
>
> In the xc_tmem_[save|restore] we also added proper memory handling
> of the 'buf' and 'pools'. Because of the loops and to make it as
> easy as possible to review we add a goto label and for almost
> all error conditions jump in it.
>
> The include for inttypes is required for the PRId64 macro to
> work (which is needed to compile this code under 32-bit).
>
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
>
> ---
> Cc: Ian Jackson <ian.jackson@eu.citrix.com>
> Cc: Wei Liu <wei.liu2@citrix.com>
>
> v1: First submission.
> ---
> tools/libxc/xc_tmem.c | 159 +++++++++++++++++++++++++-------------------
Acked-by: Wei Liu <wei.liu2@citrix.com>
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
next prev parent reply other threads:[~2016-09-28 11:07 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-28 9:42 [PATCH v1] Tmem cleanups/improvements for v4.8 Konrad Rzeszutek Wilk
2016-09-28 9:42 ` [PATCH v1 01/12] libxc/tmem/restore: Remove call to XEN_SYSCTL_TMEM_OP_SAVE_GET_VERSION Konrad Rzeszutek Wilk
2016-09-28 11:00 ` Wei Liu
2016-09-28 9:42 ` [PATCH v1 02/12] tmem: Retire XEN_SYSCTL_TMEM_OP_[SET_CAP|SAVE_GET_CLIENT_CAP] Konrad Rzeszutek Wilk
2016-09-28 11:00 ` Wei Liu
2016-09-28 15:03 ` Konrad Rzeszutek Wilk
2016-09-28 12:10 ` Jan Beulich
2016-09-30 14:04 ` Konrad Rzeszutek Wilk
2016-09-28 9:42 ` [PATCH v1 03/12] tmem: Wrap tmem dedup code with CONFIG_TMEM_DEDUP Konrad Rzeszutek Wilk
2016-09-28 12:18 ` Jan Beulich
2016-09-28 9:42 ` [PATCH v1 04/12] tmem: Wrap tmem tze code with CONFIG_TMEM_TZE Konrad Rzeszutek Wilk
2016-09-28 12:19 ` Jan Beulich
2016-09-28 9:42 ` [PATCH v1 05/12] tmem: Delete deduplication (and tze) code Konrad Rzeszutek Wilk
2016-09-28 12:34 ` Jan Beulich
2016-09-28 15:05 ` Konrad Rzeszutek Wilk
2016-09-28 9:42 ` [PATCH v1 06/12] tmem: Move client weight, frozen, live_migrating, and compress Konrad Rzeszutek Wilk
2016-09-28 12:39 ` Jan Beulich
2016-09-28 9:42 ` [PATCH v1 07/12] tmem/libxc: Squash XEN_SYSCTL_TMEM_OP_[SET|SAVE] Konrad Rzeszutek Wilk
2016-09-28 11:06 ` Wei Liu
2016-09-28 12:50 ` Jan Beulich
2016-09-28 9:42 ` [PATCH v1 08/12] tmem: Handle 'struct tmem_info' as a seperate field in the Konrad Rzeszutek Wilk
2016-09-28 11:00 ` Wei Liu
2016-09-28 12:56 ` Jan Beulich
2016-09-30 14:36 ` Konrad Rzeszutek Wilk
2016-09-30 14:56 ` Jan Beulich
2016-09-30 16:51 ` Konrad Rzeszutek Wilk
2016-09-28 9:42 ` [PATCH v1 09/12] tmem: Check version and maxpools when XEN_SYSCTL_TMEM_SET_CLIENT_INFO Konrad Rzeszutek Wilk
2016-09-28 11:00 ` Wei Liu
2016-09-28 12:58 ` Jan Beulich
2016-09-28 9:42 ` [PATCH v1 10/12] tmem: Unify XEN_SYSCTL_TMEM_OP_[[SAVE_[BEGIN|END]|RESTORE_BEGIN] Konrad Rzeszutek Wilk
2016-09-28 11:06 ` Wei Liu
2016-09-28 13:00 ` Jan Beulich
2016-09-28 9:42 ` [PATCH v1 11/12] tmem/xc_tmem_control: Rename 'arg1' to 'len' and 'arg2' to arg Konrad Rzeszutek Wilk
2016-09-28 11:07 ` Wei Liu
2016-09-28 9:42 ` [PATCH v1 12/12] tmem: Batch and squash XEN_SYSCTL_TMEM_OP_SAVE_GET_POOL_[FLAGS, NPAGES, UUID] in one sub-call: XEN_SYSCTL_TMEM_OP_GET_POOLS Konrad Rzeszutek Wilk
2016-09-28 11:07 ` Wei Liu [this message]
2016-09-28 13:11 ` Jan Beulich
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160928110734.GB16004@citrix.com \
--to=wei.liu2@citrix.com \
--cc=ian.jackson@eu.citrix.com \
--cc=konrad.wilk@oracle.com \
--cc=xen-devel@lists.xenproject.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.