Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759111Ab3EWNge (ORCPT ); Thu, 23 May 2013 09:36:34 -0400 Received: from mail-oa0-f41.google.com ([209.85.219.41]:60861 "EHLO mail-oa0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759049Ab3EWNgd (ORCPT ); Thu, 23 May 2013 09:36:33 -0400 MIME-Version: 1.0 In-Reply-To: <1369203761-12649-2-git-send-email-khandual@linux.vnet.ibm.com> References: <1369203761-12649-1-git-send-email-khandual@linux.vnet.ibm.com> <1369203761-12649-2-git-send-email-khandual@linux.vnet.ibm.com> Date: Thu, 23 May 2013 15:36:32 +0200 Message-ID: Subject: Re: [PATCH 1/5] perf: New conditional branch filter criteria in branch stack sampling From: Stephane Eranian To: Anshuman Khandual Cc: Linux PPC dev , LKML , Michael Ellerman , Michael Neuling , Peter Zijlstra , "ak@linux.intel.com" , Ingo Molnar Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1624 Lines: 38 On Wed, May 22, 2013 at 8:22 AM, Anshuman Khandual wrote: > POWER8 PMU based BHRB supports filtering for conditional branches. > This patch introduces new branch filter PERF_SAMPLE_BRANCH_COND which > will extend the existing perf ABI. Other architectures can provide > this functionality with either HW filtering support (if present) or > with SW filtering of instructions. > Reviewed-by: Stephane Eranian > Signed-off-by: Anshuman Khandual > --- > include/uapi/linux/perf_event.h | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h > index fb104e5..cb0de86 100644 > --- a/include/uapi/linux/perf_event.h > +++ b/include/uapi/linux/perf_event.h > @@ -157,8 +157,9 @@ enum perf_branch_sample_type { > PERF_SAMPLE_BRANCH_ANY_CALL = 1U << 4, /* any call branch */ > PERF_SAMPLE_BRANCH_ANY_RETURN = 1U << 5, /* any return branch */ > PERF_SAMPLE_BRANCH_IND_CALL = 1U << 6, /* indirect calls */ > + PERF_SAMPLE_BRANCH_COND = 1U << 7, /* conditional branches */ > > - PERF_SAMPLE_BRANCH_MAX = 1U << 7, /* non-ABI */ > + PERF_SAMPLE_BRANCH_MAX = 1U << 8, /* non-ABI */ > }; > > #define PERF_SAMPLE_BRANCH_PLM_ALL \ > -- > 1.7.11.7 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/