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From: Roland McGrath <roland@redhat.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: remove PT_DTRACE from arch/* except arch/um
Date: Wed, 22 Apr 2009 23:36:13 -0700 (PDT)	[thread overview]
Message-ID: <20090423063613.278E8FC3C7@magilla.sf.frob.com> (raw)
In-Reply-To: Oleg Nesterov's message of  Thursday, 23 April 2009 00:06:49 +0200 <20090422220649.GB22755@redhat.com>

> Unfortunately, I know nothing about these arches, so I can only rely on grep.
> But it really looks like nobody except arch/um actually uses DTRACE.

Same with me.  But I do trust grep, and my knowledge that PT_DTRACE was
widely used old cruft.  To be really paranoid, you can grep (painfully)
for all ->ptrace ('[>.]ptrace\>') in arch code, plus find any that use
it in asm-offsets.c, and then grep for TSK_PTRACE or whatever macro is
defined there.  (Chances are high that there are no uses that you missed.)
Or you could just leave it to the arch people to pipe up if we're wrong.

The patches all look quite right and harmless to me.


Thanks,
Roland

  reply	other threads:[~2009-04-23  6:36 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20090330185146.D525AFC3AB@magilla.sf.frob.com>
     [not found] ` <20090408203954.GA26816@redhat.com>
     [not found]   ` <20090416204004.GA28013@redhat.com>
     [not found]     ` <20090416232430.4DAE4FC3C6@magilla.sf.frob.com>
     [not found]       ` <20090420183718.GC32527@redhat.com>
     [not found]         ` <20090421011354.4B19EFC3C7@magilla.sf.frob.com>
     [not found]           ` <20090421214819.GA22845@redhat.com>
     [not found]             ` <20090422032205.B8D39FC3C7@magilla.sf.frob.com>
2009-04-22 22:04               ` ptracee data structures cleanup Oleg Nesterov
2009-04-22 22:06                 ` remove PT_DTRACE from arch/* except arch/um Oleg Nesterov
2009-04-23  6:36                   ` Roland McGrath [this message]
2009-04-22 22:17                 ` PT_DTRACE && uml Oleg Nesterov
2009-04-23  6:39                   ` Roland McGrath
2009-04-23 16:02                   ` Jeff Dike
2009-04-26 22:09                     ` Oleg Nesterov
2009-04-26 23:18                       ` copy_process() && ti->flags (Was: PT_DTRACE && uml) Oleg Nesterov
2009-04-27  2:10                         ` Roland McGrath
2009-04-22 23:01                 ` ptracee data structures cleanup Mike Frysinger
2009-04-23  6:41                   ` Roland McGrath

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