From patchwork Tue Nov 29 00:03:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13058018 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 348E8C46467 for ; Tue, 29 Nov 2022 00:04:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234805AbiK2AEZ (ORCPT ); Mon, 28 Nov 2022 19:04:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234760AbiK2AEX (ORCPT ); Mon, 28 Nov 2022 19:04:23 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8DBB51CB0A for ; Mon, 28 Nov 2022 16:04:22 -0800 (PST) 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 ams.source.kernel.org (Postfix) with ESMTPS id F41F4B80FE9 for ; Tue, 29 Nov 2022 00:04:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 42698C433D6; Tue, 29 Nov 2022 00:04:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1669680259; bh=6fYUZD2RptItW3UVKDYdkWeoAqLeFrxsCToo0H2e0ow=; h=From:To:Cc:Subject:Date:From; b=Qk056jvqmTCsl/VkerZMwxnJB+bTy6TgrHURejL6X9epgA7vI4wWM50U8Ij9fiVVf kBVlIKtaj06ijJmgkzy8j0CYjCmqGKJbdXIeYDwq0HgGltrfaANsqkxvDitT8X+0Vl L2glh12TWjVv0OCWMqiKoLwQHsWAF0oQqaIs6ZpqK0C3wSveLcXL5VkB8O2CxhoM4N sOFqdxMcmOwFIyBcUpVuWsUTDxzmrfVoag4g7SNNRHVI7jrOGVbso9eCSeoehgOsOg X+R3w3IzChsQwXj3OkmEizHza5DxqjMqzkR1OIsj+m4qxGW3rEqkXw+Z5r8KPm4NMC 8ACBhuqk2Q5nQ== From: Mark Brown To: Catalin Marinas , Will Deacon , Shuah Khan Cc: linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, Mark Brown Subject: [PATCH v1 0/3] kselftest/arm64: fp-stress performance improvements Date: Tue, 29 Nov 2022 00:03:52 +0000 Message-Id: <20221129000355.812425-1-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=866; i=broonie@kernel.org; h=from:subject; bh=6fYUZD2RptItW3UVKDYdkWeoAqLeFrxsCToo0H2e0ow=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBjhUxnlrSVw0nHjdG1sw6QBHEX3PjZQMIwpIek+J3k HPpGb3SJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCY4VMZwAKCRAk1otyXVSH0MbaB/ 97o0XoQqOm0As2MZZxe971Ht67Q8d5D02qJ99f6V/zsbaf2knfBeNBi4eAeuhivJdwGAVwo1nI3gfH 9cSKvFK/pNGU5klp8tSVbgAqkpHUxQ+CXG3TFLMBHx3LQsjL+BIzg06SAkBp4HueFVS2TdKeSd8ZPp NOx67yt3Pg/qis0UtbPCEMc6y5ggJRpxsQZPGZ7bnroEOb2oTUdqDaBDksX+u0LCpSjfvVz9+sZ0G0 fY4gEU+eG5z+FMXSSYZOKP2LAI14uKBJojex+/BR3KaJxGtzLsbPpHFR12X6p9GkcKahzKpf6fifFm 3QPepivJAjmjPUs0ogIfpeoPwku9RM X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org This series contains a few improvements to fp-stress performance, only noticable on emulated platforms which both run more slowly and are stressed far more by fp-stress due to supporting more VLs for SVE and SME. The bulk of the improvement comes from the first patch which reduces the amount of time the main fp-stress executable is swamped by load from the child processes during startup, the other two patches are much more marginal. Mark Brown (3): kselftest/arm64: Hold fp-stress children until they're all spawned kselftest/arm64: Don't drain output while spawning children kselftest/arm64: Allow epoll_wait() to return more than one result tools/testing/selftests/arm64/fp/fp-stress.c | 74 +++++++++++++++----- 1 file changed, 57 insertions(+), 17 deletions(-) base-commit: a711987490a1784c3e3fd6d752a63501c11eb80b