From: Willy Tarreau <w@1wt.eu>
To: "Thomas Weißschuh" <linux@weissschuh.net>
Cc: Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>, Shuah Khan <shuah@kernel.org>,
linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH 4/4] tools/nolibc: automatically detect necessity to use pselect6
Date: Sun, 17 Sep 2023 05:07:33 +0200 [thread overview]
Message-ID: <20230917030733.GG9646@1wt.eu> (raw)
In-Reply-To: <20230914-nolibc-syscall-nr-v1-4-e50df410da11@weissschuh.net>
On Thu, Sep 14, 2023 at 06:01:20PM +0200, Thomas Weißschuh wrote:
> We can automatically detect if pselect6 is needed or not from the kernel
> headers. This removes the need to manually specify it.
>
> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
That's indeed cleaner, I can't find the reason why we didn't do it
like this initially, I suspect that maybe we were having __NR_select
defined but not usable, I don't know. I've found it first introduced with
nolibc commit 28a7178 ("nolibc: fall back to pselect6() on aarch64"), and
the test was made before __NR_newselect, so maybe I wanted to be sure not
to use pselect6() in case another arch would define it.
Let's do as you propose, it's much cleaner and simpler. If we ever find
any breakage at least we'll know how to deal with it so I'm not worried.
Acked-by: Willy Tarreau <w@1wt.eu>
Thanks!
Willy
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
WARNING: multiple messages have this Message-ID (diff)
From: Willy Tarreau <w@1wt.eu>
To: "Thomas Weißschuh" <linux@weissschuh.net>
Cc: Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>, Shuah Khan <shuah@kernel.org>,
linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH 4/4] tools/nolibc: automatically detect necessity to use pselect6
Date: Sun, 17 Sep 2023 05:07:33 +0200 [thread overview]
Message-ID: <20230917030733.GG9646@1wt.eu> (raw)
In-Reply-To: <20230914-nolibc-syscall-nr-v1-4-e50df410da11@weissschuh.net>
On Thu, Sep 14, 2023 at 06:01:20PM +0200, Thomas Weißschuh wrote:
> We can automatically detect if pselect6 is needed or not from the kernel
> headers. This removes the need to manually specify it.
>
> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
That's indeed cleaner, I can't find the reason why we didn't do it
like this initially, I suspect that maybe we were having __NR_select
defined but not usable, I don't know. I've found it first introduced with
nolibc commit 28a7178 ("nolibc: fall back to pselect6() on aarch64"), and
the test was made before __NR_newselect, so maybe I wanted to be sure not
to use pselect6() in case another arch would define it.
Let's do as you propose, it's much cleaner and simpler. If we ever find
any breakage at least we'll know how to deal with it so I'm not worried.
Acked-by: Willy Tarreau <w@1wt.eu>
Thanks!
Willy
next prev parent reply other threads:[~2023-09-17 3:07 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-14 16:01 [PATCH 0/4] tools/nolibc: cleanups for syscall fallbacks Thomas Weißschuh
2023-09-14 16:01 ` Thomas Weißschuh
2023-09-14 16:01 ` [PATCH 1/4] selftests/nolibc: allow building i386 with multiarch compiler Thomas Weißschuh
2023-09-14 16:01 ` Thomas Weißschuh
2023-09-17 2:49 ` Willy Tarreau
2023-09-17 2:49 ` Willy Tarreau
2023-09-14 16:01 ` [PATCH 2/4] tools/nolibc: avoid unused parameter warnings for ENOSYS fallbacks Thomas Weißschuh
2023-09-14 16:01 ` Thomas Weißschuh
2023-09-17 2:58 ` Willy Tarreau
2023-09-17 2:58 ` Willy Tarreau
2023-09-17 5:49 ` Thomas Weißschuh
2023-09-17 5:49 ` Thomas Weißschuh
2023-09-17 9:48 ` Willy Tarreau
2023-09-17 9:48 ` Willy Tarreau
2023-09-17 15:07 ` Thomas Weißschuh
2023-09-17 15:07 ` Thomas Weißschuh
2023-09-17 15:08 ` Willy Tarreau
2023-09-17 15:08 ` Willy Tarreau
2023-09-14 16:01 ` [PATCH 3/4] tools/nolibc: don't define new syscall number Thomas Weißschuh
2023-09-14 16:01 ` Thomas Weißschuh
2023-09-17 2:59 ` Willy Tarreau
2023-09-17 2:59 ` Willy Tarreau
2023-09-14 16:01 ` [PATCH 4/4] tools/nolibc: automatically detect necessity to use pselect6 Thomas Weißschuh
2023-09-14 16:01 ` Thomas Weißschuh
2023-09-17 3:07 ` Willy Tarreau [this message]
2023-09-17 3:07 ` Willy Tarreau
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=20230917030733.GG9646@1wt.eu \
--to=w@1wt.eu \
--cc=aou@eecs.berkeley.edu \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=linux@weissschuh.net \
--cc=palmer@dabbelt.com \
--cc=paul.walmsley@sifive.com \
--cc=shuah@kernel.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.