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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E63D5C4332F for ; Fri, 14 Oct 2022 14:07:04 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4Mpp9M41Rgz3fS1 for ; Sat, 15 Oct 2022 01:07:03 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=dRH3vaNH; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=2604:1380:4641:c500::1; helo=dfw.source.kernel.org; envelope-from=sashal@kernel.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=dRH3vaNH; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4MpnsM4XyMz3dw8 for ; Sat, 15 Oct 2022 00:53:11 +1100 (AEDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7D41961B4E; Fri, 14 Oct 2022 13:53:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1567EC433D6; Fri, 14 Oct 2022 13:53:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1665755588; bh=BOeUAW08y22Ui11TSsJcGyob9iBOvUvzBgY7Wtfqjlo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dRH3vaNHhOiKFbPfYl735iy8u2dC6Oy4xQLUuOmvz5tWzoKNq8FC7tXNwIoz3+nvG MJzR+gXW0XAFGd8y2ru9yqGhyLL2IZikMz0nVdJFhiI3ssDyLsoeih3kkSVxVgP/SL MDalpq0deWf/9zWPZIXOq4kcNCRx3SZ12lVKxckkkLkah1/6h+JBYwcmMXPf0JhTUJ ZQtGckk9M2MmfP5sJCEscJwQ/Xnk7BZLaAM8oMrAdm2WIfLvtgSfV8KYqHk1M8jQbC FPL5mXMj84j7a9FTJT9EvDScT/WQFzRY7EUV8q/S0uEE7dif/MObgsODysfDaZAIWC dFr+JBjXVIjoQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 2/8] powerpc/selftests: Use timersub() for gettimeofday() Date: Fri, 14 Oct 2022 09:52:55 -0400 Message-Id: <20221014135302.2109489-2-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221014135302.2109489-1-sashal@kernel.org> References: <20221014135302.2109489-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit 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: Sasha Levin , ye xingchen , Zeal Robot , linuxppc-dev@lists.ozlabs.org, linux-kselftest@vger.kernel.org, shuah@kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: ye xingchen [ Upstream commit c814bf958926ff45a9c1e899bd001006ab6cfbae ] Use timersub() function to simplify the code. Reported-by: Zeal Robot Signed-off-by: ye xingchen Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20220816105106.82666-1-ye.xingchen@zte.com.cn Signed-off-by: Sasha Levin --- tools/testing/selftests/powerpc/benchmarks/gettimeofday.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c b/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c index 6b415683357b..580fcac0a09f 100644 --- a/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c +++ b/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c @@ -12,7 +12,7 @@ static int test_gettimeofday(void) { int i; - struct timeval tv_start, tv_end; + struct timeval tv_start, tv_end, tv_diff; gettimeofday(&tv_start, NULL); @@ -20,7 +20,9 @@ static int test_gettimeofday(void) gettimeofday(&tv_end, NULL); } - printf("time = %.6f\n", tv_end.tv_sec - tv_start.tv_sec + (tv_end.tv_usec - tv_start.tv_usec) * 1e-6); + timersub(&tv_start, &tv_end, &tv_diff); + + printf("time = %.6f\n", tv_diff.tv_sec + (tv_diff.tv_usec) * 1e-6); return 0; } -- 2.35.1