From patchwork Tue Nov 29 21:59:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13059260 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 57B5BC433FE for ; Tue, 29 Nov 2022 22:00:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235992AbiK2V7i (ORCPT ); Tue, 29 Nov 2022 16:59:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41112 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237112AbiK2V7f (ORCPT ); Tue, 29 Nov 2022 16:59:35 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AF5736F362 for ; Tue, 29 Nov 2022 13:59:34 -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 665A4B8197E for ; Tue, 29 Nov 2022 21:59:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A296EC433C1; Tue, 29 Nov 2022 21:59:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1669759172; bh=6udGwnhhmnC8hQnb07bd9QEJydLU3UUA1u2UiRGtEqM=; h=From:To:Cc:Subject:Date:From; b=L5UaQ7X53RsOt6eHQsMMEQSwSpQ93o0iPavHcMVRW8CTKicJKCQa+ZhQLH8OmjUHn r06RDCPWBIc2j95XLZG6Tt0h5c4nGZ7jf0sjauLSvyf9r0GRgb1qAJOZV1zGaIvKUu FUuVn7oQBV6QzrUhDtN34G5bWdL5vnCxJyUAEKmHYrYYj3hgcnmOrhU4sEKKeXWHFv DPHwiAzvwTBqJ9j3pFsEpdcXDvLwmz1JKbDpEL0XYaeQRQh9wsAZNu8IkuACS7Zhfm mRNCaIqY0553tzRWsk+T09/hVvC4CYMjyBgr5JK6IvNCYBYkX7uTzHx893RnJ3OUdq YuxcfpLBhl9jg== 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 v2 0/3] kselftest/arm64: fp-stress performance improvements Date: Tue, 29 Nov 2022 21:59:22 +0000 Message-Id: <20221129215926.442895-1-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=914; i=broonie@kernel.org; h=from:subject; bh=6udGwnhhmnC8hQnb07bd9QEJydLU3UUA1u2UiRGtEqM=; b=owGbwMvMwMWocq27KDak/QLjabUkhuS2hl0zGt59z1rvW9ZxVaf+yGnHvYu6b9ubzGlfZ2HZ4Mpw Q3xeJ6MxCwMjF4OsmCLL2mcZq9LDJbbOfzT/FcwgViaQKQxcnAIwkcU87H8FmFcZqTTt41c9Xu0coV C9It3dsj8wOFdeLsEie1WQ0xmWb0t1o7OWRa6ytmVjapzg76IfWvfBqPxKQtVLzQO+C5lkVihNtPJL fvFad/1qJae7NW57Dur+2mFX4zj/jUj7M/6rMoxpnGytMWZ71K96X047eXP3SekjvPq7ak/8sXj1+u 0arYzZDm8NDOV2Kq2fyjgjV2Tt+cfNJw5zMrbPjdjfaf9O3f7IKS/Pl492n3k991Kmat1NVSfpT3f+ ik9ljvaOn+YZ73EluffvXd+cUMO79QWFTovfFrseXHls/qv+Zxu5X821PMfNddEnvz9X0kAzfPon+Q 8nvW4ftRSfo6dm4mW4SVscaJw6AA== 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. v2: - Rebase onto arm64/for-next/selftests 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: 642978981ec8a79da00828c696c58b3732b993a6