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

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Date:	Thu, 03 Sep 2009 09:11:57 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	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,
	mingo@...e.hu
CC:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:perfcounters/core] perf_counter: Introduce new (non-)paranoia
 level to allow raw tracepoint access

>  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.

>  			!capable(CAP_SYS_ADMIN))
>  		return ERR_PTR(-EPERM);
>  
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