linux-kernel - Re: [PATCH -tip 3/3] Add get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 13 Nov 2009 19:29:14 -0500
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Roland McGrath <roland@...hat.com>
CC:	Ingo Molnar <mingo@...e.hu>, lkml <linux-kernel@...r.kernel.org>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>
Subject: Re: [PATCH -tip 3/3] Add get_signal tracepoint

Roland McGrath wrote:
> This is orthogonal to the core-dump tracepoint, I don't see why you
> call them a unified patch series.

Agreed, I'll split them.

> The proper name for this event is "signal delivery".  But since the
> proper name for "send_signal" is "signal generation", I suppose "get"
> is analogously improper to the existing "send" tracepoint.  ;-)

Ah, I see. 'deliver_signal' is good to me :-).

Thank you,

> Especially if you call this "get" rather than "deliver", there is
> another place that should invoke this tracepoint (or perhaps a third
> one).  sys_rt_sigtimedwait "gets" a signal without delivering it.  In
> POSIX terminology this is called "accepting" the signal: the three
> things that can happen in the life of a signal are "generate",
> "deliver", and "accept".  If you are trying to match up what happened to
> a signal generated by kill() or whatnot, then you want to notice both
> delivery and acceptance as the complementary event.
>
> (And again I have no clue why this signal stuff should be called
> "sched" at all.)
>
>
> Thanks,
> Roland
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@...r.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/

-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division

e-mail: mhiramat@...hat.com

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/