From: nsaenzju@redhat.com
To: Marcelo Tosatti <mtosatti@redhat.com>, linux-kernel@vger.kernel.org
Cc: Nitesh Lal <nilal@redhat.com>,
Frederic Weisbecker <frederic@kernel.org>,
Christoph Lameter <cl@linux.com>,
Juri Lelli <juri.lelli@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Alex Belits <abelits@marvell.com>, Peter Xu <peterx@redhat.com>
Subject: Re: [patch 1/4] add basic task isolation prctl interface
Date: Tue, 27 Jul 2021 12:48:33 +0200 [thread overview]
Message-ID: <7b2d6bf91d30c007e19a7d2cbddcb2460e72d163.camel@redhat.com> (raw)
In-Reply-To: <20210727104119.551607458@fuller.cnet>
On Tue, 2021-07-27 at 07:38 -0300, Marcelo Tosatti wrote:
> +Isolation mode (PR_ISOL_MODE):
> +------------------------------
> +
> +- PR_ISOL_MODE_NONE (arg4): no per-task isolation (default mode).
> + PR_ISOL_EXIT sets mode to PR_ISOL_MODE_NONE.
> +
> +- PR_ISOL_MODE_NORMAL (arg4): applications can perform system calls normally,
> + and in case of interruption events, the notifications can be collected
> + by BPF programs.
> + In this mode, if system calls are performed, deferred actions initiated
> + by the system call will be executed before return to userspace.
> +
> +Other modes, which for example send signals upon interruptions events,
> +can be implemented.
Shouldn't this be a set of flags that enable specific isolation features?
Something the likes of 'PR_ISOL_QUIESCE_ON_EXIT'. Modes seem more restrictive
and too much of a commitment. If we merge MODE_NORMAL as is, we won't be able
to tweak/extend its behaviour in the future.
--
Nicolás Sáenz
next prev parent reply other threads:[~2021-07-27 10:48 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-27 10:38 [patch 0/4] prctl task isolation interface and vmstat sync Marcelo Tosatti
2021-07-27 10:38 ` [patch 1/4] add basic task isolation prctl interface Marcelo Tosatti
2021-07-27 10:48 ` nsaenzju [this message]
2021-07-27 11:00 ` Marcelo Tosatti
2021-07-27 12:38 ` nsaenzju
2021-07-27 13:06 ` Marcelo Tosatti
2021-07-27 13:08 ` Marcelo Tosatti
2021-07-27 13:09 ` Frederic Weisbecker
2021-07-27 14:52 ` Marcelo Tosatti
2021-07-27 23:45 ` Frederic Weisbecker
2021-07-28 9:37 ` Marcelo Tosatti
2021-07-28 11:45 ` Frederic Weisbecker
2021-07-28 13:21 ` Marcelo Tosatti
2021-07-28 21:22 ` Frederic Weisbecker
2021-07-28 11:55 ` nsaenzju
2021-07-28 13:16 ` Marcelo Tosatti
[not found] ` <CAFki+LkQwoqVTKmgnwLQQM8ua-ixbLp8i+jUT6xF15k6X=89mw@mail.gmail.com>
2021-07-28 16:21 ` Marcelo Tosatti
2021-07-28 17:08 ` nsaenzju
[not found] ` <CAFki+LmHeXmSFze8YEHFNbYA5hLEtnZyk37Yjf-eyOuKa8Os4w@mail.gmail.com>
2021-07-28 16:17 ` Marcelo Tosatti
2021-07-27 10:38 ` [patch 2/4] task isolation: sync vmstats on return to userspace Marcelo Tosatti
2021-07-27 10:38 ` [patch 3/4] mm: vmstat: move need_update Marcelo Tosatti
2021-07-27 10:38 ` [patch 4/4] mm: vmstat_refresh: avoid queueing work item if cpu stats are clean Marcelo Tosatti
2021-07-30 20:18 [patch 0/4] extensible prctl task isolation interface and vmstat sync (v2) Marcelo Tosatti
2021-07-30 20:18 ` [patch 1/4] add basic task isolation prctl interface Marcelo Tosatti
[not found] ` <CAFki+Lnf0cs62Se0aPubzYxP9wh7xjMXn7RXEPvrmtBdYBrsow@mail.gmail.com>
2021-07-31 0:49 ` Marcelo Tosatti
2021-07-31 7:47 ` kernel test robot
[not found] ` <CAFki+LkQVQOe+5aNEKWDvLdnjWjxzKWOiqOvBZzeuPWX+G=XgA@mail.gmail.com>
2021-08-02 14:16 ` Marcelo Tosatti
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=7b2d6bf91d30c007e19a7d2cbddcb2460e72d163.camel@redhat.com \
--to=nsaenzju@redhat.com \
--cc=abelits@marvell.com \
--cc=cl@linux.com \
--cc=frederic@kernel.org \
--cc=juri.lelli@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mtosatti@redhat.com \
--cc=nilal@redhat.com \
--cc=peterx@redhat.com \
--cc=peterz@infradead.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).