linux-kernel - Re: [PATCH] perf, x86: Disallow flags for most Core2/Atom/Nehalem/Westmere events

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Message-ID: <20140924074753.GR16043@twins.programming.kicks-ass.net>
Date:	Wed, 24 Sep 2014 09:47:53 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org, mingo@...nel.org, eranian@...gle.com,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH] perf, x86: Disallow flags for most
 Core2/Atom/Nehalem/Westmere events

On Tue, Sep 23, 2014 at 02:54:24PM -0700, Andi Kleen wrote:
> From: Andi Kleen <ak@...ux.intel.com>
> 
> Disallow setting inv/cmask/etc. flags for all PEBS events
> on these CPUs, except for the UOPS_RETIRED.* events on Nehalem/Westmere,
> which are needed for cycles:p. This avoids an undefined situation
> strongly discouraged by the Intle SDM. The PLD_* events were already
> covered. This follows the earlier changes for Sandy Bridge and alter.
> 
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>

>From the compile before sending dept:

../arch/x86/kernel/cpu/perf_event_intel_ds.c:555:2: error: implicit declaration of function ‘INTEL_FLAGS_UEVENT_CONSTRAINT’ [-Werror=implicit-function-declaration]

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