From patchwork Fri Aug 30 04:24:45 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 271092 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from ozlabs.org (localhost [IPv6:::1]) by ozlabs.org (Postfix) with ESMTP id 5B27A2C0130 for ; Fri, 30 Aug 2013 14:26:22 +1000 (EST) Received: by ozlabs.org (Postfix) id 91FC12C00B3; Fri, 30 Aug 2013 14:25:45 +1000 (EST) Delivered-To: linuxppc-dev@ozlabs.org Received: from e28smtp04.in.ibm.com (e28smtp04.in.ibm.com [122.248.162.4]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e28smtp04.in.ibm.com", Issuer "GeoTrust SSL CA" (not verified)) by ozlabs.org (Postfix) with ESMTPS id ED8F52C008E for ; Fri, 30 Aug 2013 14:25:42 +1000 (EST) Received: from /spool/local by e28smtp04.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 30 Aug 2013 09:47:25 +0530 Received: from d28dlp01.in.ibm.com (9.184.220.126) by e28smtp04.in.ibm.com (192.168.1.134) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Fri, 30 Aug 2013 09:47:24 +0530 Received: from d28relay05.in.ibm.com (d28relay05.in.ibm.com [9.184.220.62]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id 5252BE0056 for ; Fri, 30 Aug 2013 09:56:16 +0530 (IST) Received: from d28av03.in.ibm.com (d28av03.in.ibm.com [9.184.220.65]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r7U4PYRh47448200 for ; Fri, 30 Aug 2013 09:55:35 +0530 Received: from d28av03.in.ibm.com (localhost [127.0.0.1]) by d28av03.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id r7U4PaON024917 for ; Fri, 30 Aug 2013 09:55:36 +0530 Received: from polynomials.in.ibm.com (polynomials.in.ibm.com [9.124.35.26]) by d28av03.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id r7U4PaPq024909; Fri, 30 Aug 2013 09:55:36 +0530 From: Anshuman Khandual To: linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Subject: [PATCH V2 1/6] perf: New conditional branch filter criteria in branch stack sampling Date: Fri, 30 Aug 2013 09:54:45 +0530 Message-Id: <1377836690-32710-2-git-send-email-khandual@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1377836690-32710-1-git-send-email-khandual@linux.vnet.ibm.com> References: <1377836690-32710-1-git-send-email-khandual@linux.vnet.ibm.com> X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13083004-5564-0000-0000-0000097D63B3 Cc: eranian@google.com, acme@redhat.com, ellerman@au1.ibm.com, sukadev@linux.vnet.ibm.com, michael.neuling@au1.ibm.com X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.16rc2 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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. Signed-off-by: Anshuman Khandual Reviewed-by: Stephane Eranian --- 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 0b1df41..5da52b6 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -160,8 +160,9 @@ enum perf_branch_sample_type { PERF_SAMPLE_BRANCH_ABORT_TX = 1U << 7, /* transaction aborts */ PERF_SAMPLE_BRANCH_IN_TX = 1U << 8, /* in transaction */ PERF_SAMPLE_BRANCH_NO_TX = 1U << 9, /* not in transaction */ + PERF_SAMPLE_BRANCH_COND = 1U << 10, /* conditional branches */ - PERF_SAMPLE_BRANCH_MAX = 1U << 10, /* non-ABI */ + PERF_SAMPLE_BRANCH_MAX = 1U << 11, /* non-ABI */ }; #define PERF_SAMPLE_BRANCH_PLM_ALL \