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From: Arnd Bergmann <arnd@arndb.de>
To: Roman Penyaev <rpenyaev@suse.de>
Cc: Azat Khuzhin <azat@libevent.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Al Viro <viro@zeniv.linux.org.uk>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Linux FS-devel Mailing List <linux-fsdevel@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 13/13] epoll: implement epoll_create2() syscall
Date: Thu, 16 May 2019 12:57:34 +0200
Message-ID: <CAK8P3a2TqHVyuPpQrghS8LfrvBffavsAFA5XC20Unf89CssRPw@mail.gmail.com> (raw)
In-Reply-To: <41b847c48ccbe0c406bd54c16fbc1bf0@suse.de>

On Thu, May 16, 2019 at 12:20 PM Roman Penyaev <rpenyaev@suse.de> wrote:
>
> On 2019-05-16 12:03, Arnd Bergmann wrote:
> > On Thu, May 16, 2019 at 10:59 AM Roman Penyaev <rpenyaev@suse.de>
> > wrote:
> >>
> >> epoll_create2() is needed to accept EPOLL_USERPOLL flags
> >> and size, i.e. this patch wires up polling from userspace.
> >
> > Could you add the system call to all syscall*.tbl files at the same
> > time here?
>
> For all other archs, you mean?  Sure.  But what is the rule of thumb?
> Sometimes people tend to add to the most common x86 and other tables
> are left untouched, but then you commit the rest, e.g.
>
> commit 39036cd2727395c3369b1051005da74059a85317
> Author: Arnd Bergmann <arnd@arndb.de>
> Date:   Thu Feb 28 13:59:19 2019 +0100
>
>      arch: add pidfd and io_uring syscalls everywhere

We only recently introduced syscall.tbl files in a common format,
which makes it much easier to add new ones. I hope we can
do it for all architectures right away from now on.

I just noticed that the new mount API assigns six new system
calls as well, but did not use the same numbers across
architectures. I hope we can still rectify that before -rc1
and use the next available ones (428..433), then yours should
be 434 on all architectures, with the exception of arch/alpha.

      Arnd

  reply index

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-16  8:57 [PATCH v3 00/13] epoll: support pollable epoll from userspace Roman Penyaev
2019-05-16  8:57 ` [PATCH v3 01/13] epoll: move private helpers from a header to the source Roman Penyaev
2019-05-16  8:57 ` [PATCH v3 02/13] epoll: introduce user structures for polling from userspace Roman Penyaev
2019-05-16  8:58 ` [PATCH v3 03/13] epoll: allocate user header and user events ring " Roman Penyaev
2019-05-16  8:58 ` [PATCH v3 04/13] epoll: some sanity flags checks for epoll syscalls " Roman Penyaev
2019-05-16  8:58 ` [PATCH v3 05/13] epoll: offload polling to a work in case of epfd polled " Roman Penyaev
2019-05-21  7:51   ` Eric Wong
2019-05-22 12:54     ` Roman Penyaev
2019-05-16  8:58 ` [PATCH v3 06/13] epoll: introduce helpers for adding/removing events to uring Roman Penyaev
2019-05-31  9:55   ` Peter Zijlstra
2019-05-31 11:24     ` Roman Penyaev
2019-05-31 13:11       ` Peter Zijlstra
2019-05-31  9:56   ` Peter Zijlstra
2019-05-31 11:15     ` Roman Penyaev
2019-05-31 12:53       ` Peter Zijlstra
2019-05-31 14:28         ` Roman Penyaev
2019-05-31 16:53           ` Peter Zijlstra
2019-05-31 12:56       ` Peter Zijlstra
2019-05-31 14:21         ` Roman Penyaev
2019-05-31 16:51           ` Peter Zijlstra
2019-05-31 18:58             ` Roman Penyaev
2019-06-03  9:09               ` Peter Zijlstra
2019-06-03 10:02                 ` Roman Penyaev
2019-05-16  8:58 ` [PATCH v3 07/13] epoll: call ep_add_event_to_uring() from ep_poll_callback() Roman Penyaev
2019-05-31  9:56   ` Peter Zijlstra
2019-05-31 11:22     ` Roman Penyaev
2019-05-31 13:05       ` Peter Zijlstra
2019-05-31 15:05         ` Roman Penyaev
2019-05-16  8:58 ` [PATCH v3 08/13] epoll: support polling from userspace for ep_insert() Roman Penyaev
2019-05-16  8:58 ` [PATCH v3 09/13] epoll: support polling from userspace for ep_remove() Roman Penyaev
2019-05-16  8:58 ` [PATCH v3 10/13] epoll: support polling from userspace for ep_modify() Roman Penyaev
2019-05-16  8:58 ` [PATCH v3 11/13] epoll: support polling from userspace for ep_poll() Roman Penyaev
2019-05-16  8:58 ` [PATCH v3 12/13] epoll: support mapping for epfd when polled from userspace Roman Penyaev
2019-05-16  8:58 ` [PATCH v3 13/13] epoll: implement epoll_create2() syscall Roman Penyaev
2019-05-16 10:03   ` Arnd Bergmann
2019-05-16 10:20     ` Roman Penyaev
2019-05-16 10:57       ` Arnd Bergmann [this message]
2019-05-22  2:33       ` Andrew Morton
2019-05-22  9:11         ` Roman Penyaev
2019-05-22 11:14         ` Arnd Bergmann
2019-05-22 18:36           ` Andrew Morton
2019-05-31  9:55 ` [PATCH v3 00/13] epoll: support pollable epoll from userspace Peter Zijlstra
2019-05-31 14:48 ` Jens Axboe
2019-05-31 16:02   ` Roman Penyaev
2019-05-31 16:54     ` Jens Axboe
2019-05-31 19:45       ` Roman Penyaev
2019-05-31 21:09         ` Jens Axboe
2019-06-05  6:17           ` Roman Penyaev
2019-05-31 16:33 ` Peter Zijlstra
2019-05-31 18:50   ` Roman Penyaev

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