linux-kernel - Re: [tip:perfcounters/core] perf_counter: Introduce new (non-)paranoia level to allow raw tracepoint access

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Message-ID: <20090903064716.GA14911@elte.hu>
Date:	Thu, 3 Sep 2009 08:47:16 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	mingo@...hat.com, hpa@...or.com, paulus@...ba.org, acme@...hat.com,
	linux-kernel@...r.kernel.org, fweisbec@...il.com,
	a.p.zijlstra@...llo.nl, efault@....de, tglx@...utronix.de,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:perfcounters/core] perf_counter: Introduce new
	(non-)paranoia level to allow raw tracepoint access


* Li Zefan <lizf@...fujitsu.com> wrote:

> >  static inline bool perf_paranoid_cpu(void)
> >  {
> >  	return sysctl_perf_counter_paranoid > 0;
> > @@ -3971,6 +3977,7 @@ static const struct pmu *tp_perf_counter_init(struct perf_counter *counter)
> >  	 * have these.
> >  	 */
> >  	if ((counter->attr.sample_type & PERF_SAMPLE_RAW) &&
> > +			&& perf_paranoid_tracepoint_raw() &&
> 
> "&& &&"
> 
> This leads to build failure.

Yeah - fixed that yesterday, forgot to push out :-/

	Ingo
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