From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69F6CC47098 for ; Fri, 4 Jun 2021 12:31:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 55C9961412 for ; Fri, 4 Jun 2021 12:31:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230234AbhFDMc7 (ORCPT ); Fri, 4 Jun 2021 08:32:59 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:10132 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229718AbhFDMc6 (ORCPT ); Fri, 4 Jun 2021 08:32:58 -0400 Received: from localhost (mailhub3.si.c-s.fr [192.168.12.233]) by localhost (Postfix) with ESMTP id 4FxMZ65Xs1zBCns; Fri, 4 Jun 2021 14:31:10 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HUvhFCORwV31; Fri, 4 Jun 2021 14:31:10 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 4FxMZ64GJ0zBCmY; Fri, 4 Jun 2021 14:31:10 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 8856C8B8A2; Fri, 4 Jun 2021 14:31:10 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id T_jecGVNfPOv; Fri, 4 Jun 2021 14:31:10 +0200 (CEST) Received: from po15610vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 40FEE8B885; Fri, 4 Jun 2021 14:31:10 +0200 (CEST) Received: by po15610vm.idsi0.si.c-s.fr (Postfix, from userid 0) id E48BF64BD9; Fri, 4 Jun 2021 12:31:09 +0000 (UTC) Message-Id: <0ad62673d3e063f848e7c99d719bb966efd433e8.1622809833.git.christophe.leroy@csgroup.eu> From: Christophe Leroy Subject: [PATCH] powerpc/selftests: Use gettid() instead of getppid() for null_syscall To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Shuah Khan Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kselftest@vger.kernel.org Date: Fri, 4 Jun 2021 12:31:09 +0000 (UTC) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org gettid() is 10% lighter than getppid(), use it for null_syscall selftest. Signed-off-by: Christophe Leroy --- tools/testing/selftests/powerpc/benchmarks/null_syscall.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/powerpc/benchmarks/null_syscall.c b/tools/testing/selftests/powerpc/benchmarks/null_syscall.c index 579f0215c6e7..9836838a529f 100644 --- a/tools/testing/selftests/powerpc/benchmarks/null_syscall.c +++ b/tools/testing/selftests/powerpc/benchmarks/null_syscall.c @@ -14,6 +14,7 @@ #include #include #include +#include #include static volatile int soak_done; @@ -121,7 +122,7 @@ static void do_null_syscall(unsigned long nr) unsigned long i; for (i = 0; i < nr; i++) - getppid(); + syscall(__NR_gettid); } #define TIME(A, STR) \ -- 2.25.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F1311C07E94 for ; Fri, 4 Jun 2021 12:31:40 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2C44C613AA for ; Fri, 4 Jun 2021 12:31:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2C44C613AA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=csgroup.eu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4FxMZf47qjz30CZ for ; Fri, 4 Jun 2021 22:31:38 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=csgroup.eu (client-ip=93.17.236.30; helo=pegase1.c-s.fr; envelope-from=christophe.leroy@csgroup.eu; receiver=) Received: from pegase1.c-s.fr (pegase1.c-s.fr [93.17.236.30]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4FxMZD75dsz2ym4 for ; Fri, 4 Jun 2021 22:31:14 +1000 (AEST) Received: from localhost (mailhub3.si.c-s.fr [192.168.12.233]) by localhost (Postfix) with ESMTP id 4FxMZ65Xs1zBCns; Fri, 4 Jun 2021 14:31:10 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HUvhFCORwV31; Fri, 4 Jun 2021 14:31:10 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 4FxMZ64GJ0zBCmY; Fri, 4 Jun 2021 14:31:10 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 8856C8B8A2; Fri, 4 Jun 2021 14:31:10 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id T_jecGVNfPOv; Fri, 4 Jun 2021 14:31:10 +0200 (CEST) Received: from po15610vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 40FEE8B885; Fri, 4 Jun 2021 14:31:10 +0200 (CEST) Received: by po15610vm.idsi0.si.c-s.fr (Postfix, from userid 0) id E48BF64BD9; Fri, 4 Jun 2021 12:31:09 +0000 (UTC) Message-Id: <0ad62673d3e063f848e7c99d719bb966efd433e8.1622809833.git.christophe.leroy@csgroup.eu> From: Christophe Leroy Subject: [PATCH] powerpc/selftests: Use gettid() instead of getppid() for null_syscall To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Shuah Khan Date: Fri, 4 Jun 2021 12:31:09 +0000 (UTC) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" gettid() is 10% lighter than getppid(), use it for null_syscall selftest. Signed-off-by: Christophe Leroy --- tools/testing/selftests/powerpc/benchmarks/null_syscall.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/powerpc/benchmarks/null_syscall.c b/tools/testing/selftests/powerpc/benchmarks/null_syscall.c index 579f0215c6e7..9836838a529f 100644 --- a/tools/testing/selftests/powerpc/benchmarks/null_syscall.c +++ b/tools/testing/selftests/powerpc/benchmarks/null_syscall.c @@ -14,6 +14,7 @@ #include #include #include +#include #include static volatile int soak_done; @@ -121,7 +122,7 @@ static void do_null_syscall(unsigned long nr) unsigned long i; for (i = 0; i < nr; i++) - getppid(); + syscall(__NR_gettid); } #define TIME(A, STR) \ -- 2.25.0