Date:   Fri, 7 Jan 2022 22:29:12 +0300
From:   Arseny Maslennikov <ar@cs.msu.ru>
To:     Walt Drummond <walt@drummond.us>
Cc:     Theodore Ts'o <tytso@mit.edu>,
        "Eric W. Biederman" <ebiederm@xmission.com>, aacraid@microsemi.com,
        viro@zeniv.linux.org.uk, anna.schumaker@netapp.com, arnd@arndb.de,
        bsegall@google.com, bp@alien8.de, chuck.lever@oracle.com,
        bristot@redhat.com, dave.hansen@linux.intel.com,
        dwmw2@infradead.org, dietmar.eggemann@arm.com, dinguyen@kernel.org,
        geert@linux-m68k.org, gregkh@linuxfoundation.org, hpa@zytor.com,
        idryomov@gmail.com, mingo@redhat.com, yzaikin@google.com,
        ink@jurassic.park.msu.ru, jejb@linux.ibm.com, jmorris@namei.org,
        bfields@fieldses.org, jlayton@kernel.org, jirislaby@kernel.org,
        john.johansen@canonical.com, juri.lelli@redhat.com,
        keescook@chromium.org, mcgrof@kernel.org,
        martin.petersen@oracle.com, mattst88@gmail.com, mgorman@suse.de,
        oleg@redhat.com, pbonzini@redhat.com, peterz@infradead.org,
        rth@twiddle.net, richard@nod.at, serge@hallyn.com,
        rostedt@goodmis.org, tglx@linutronix.de,
        trond.myklebust@hammerspace.com, vincent.guittot@linaro.org,
        x86@kernel.org, linux-kernel@vger.kernel.org,
        ceph-devel@vger.kernel.org, kvm@vger.kernel.org,
        linux-alpha@vger.kernel.org, linux-arch@vger.kernel.org,
        linux-fsdevel@vger.kernel.org, linux-m68k@vger.kernel.org,
        linux-mtd@lists.infradead.org, linux-nfs@vger.kernel.org,
        linux-scsi@vger.kernel.org, linux-security-module@vger.kernel.org
Message-ID: <YdiUiHAhLyfgpvVY@cello>
References: <20220103181956.983342-1-walt@drummond.us>
 <87iluzidod.fsf@email.froward.int.ebiederm.org>
 <YdSzjPbVDVGKT4km@mit.edu>
 <87pmp79mxl.fsf@email.froward.int.ebiederm.org>
 <YdTI16ZxFFNco7rH@mit.edu>
 <CADCN6nzT-Dw-AabtwWrfVRDd5HzMS3EOy8WkeomicJF07nQyoA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha512;
        protocol="application/pgp-signature"; boundary="jM/2AY6iSqMbsk1G"
Content-Disposition: inline
In-Reply-To: <CADCN6nzT-Dw-AabtwWrfVRDd5HzMS3EOy8WkeomicJF07nQyoA@mail.gmail.com>
OpenPGP: url=http://grep.cs.msu.ru/~ar/pgp-key.asc
Subject: Re: [RFC PATCH 0/8] signals: Support more than 64 signals
Precedence: bulk


--jM/2AY6iSqMbsk1G
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

On Tue, Jan 04, 2022 at 02:31:44PM -0800, Walt Drummond wrote:
> The only standard tools that support SIGINFO are sleep, dd and ping,
> (and kill, for obvious reasons) so it's not like there's a vast hole
> in the tooling or something, nor is there a large legacy software base
> just waiting for SIGINFO to appear.   So while I very much enjoyed
> figuring out how to make SIGINFO work ...

As far as I recall, GNU make on *BSD does support SIGINFO (Not a
standard tool, but obviously an established one).

The developers of strace have expressed interest in SIGINFO support
to print tracer status messages (unfortunately, not on a public list).
Computational software can use this instead of stderr progress spam, if
run in an interactive fashion on a terminal, as it frequently is. There
is a user base, it's just not very vocal on kernel lists. :)

--jM/2AY6iSqMbsk1G
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=ueZJ
-----END PGP SIGNATURE-----

--jM/2AY6iSqMbsk1G--