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Date: Wed, 28 Jan 2015 16:42:30 +0100
From: Peter Zijlstra <peterz@infradead.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [RFC PATCH 2/4] sched: Use traced preempt count operations to
 toggle PREEMPT_ACTIVE
Message-ID: <20150128154230.GH23038@twins.programming.kicks-ass.net>
References: <1422404652-29067-1-git-send-email-fweisbec@gmail.com>
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On Wed, Jan 28, 2015 at 01:24:10AM +0100, Frederic Weisbecker wrote:
> d1f74e20b5b064a130cd0743a256c2d3cfe84010 turned PREEMPT_ACTIVE modifiers
> to use raw untraced preempt count operations. Meanwhile this prevents
> from debugging and tracing preemption disabled if we pull that
> responsibility to schedule() callers (see following patches).
> 
Why do you care anyhow? The trace format has the preempt count in, so
any change is obvious.