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Date: Sat, 14 Apr 2012 22:17:48 +0200
From: Oleg Nesterov <oleg@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
        David Howells <dhowells@redhat.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
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        "Frank Ch. Eigler" <fche@redhat.com>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Larry Woodman <lwoodman@redhat.com>, Tejun Heo <tj@kernel.org>,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 0/3] task_work_add (was: task_work_queue)
Message-ID: <20120414201748.GA8482@redhat.com>
References: <20120414021201.GA23385@redhat.com> <1334426937.2528.108.camel@twins>
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On 04/14, Peter Zijlstra wrote:
>
> Can you use this to get rid of TIF_UPROBE as well?

Yes, I thought about uprobes. May be it can use task_work, but
it is not easy to avoid TIF_UPROBE. The problem is the first
UTASK_BP_HIT when current->utask == NULL, and ->utask is the
only "right" place to hold task_work. We will see.

Oleg.