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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 BED6BC43331 for ; Sun, 10 Nov 2019 03:15:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 92F0D21655 for ; Sun, 10 Nov 2019 03:15:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573355748; bh=SXNKvy0fhdk/59LQap0bFKFWEbNXfleA9TbgtbVruJo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=cB2lrlpBePYrhj0o3ibfqTACwkAcQljJjpFdE2ai52aIfYiKe8x2RvEdpfRQAKOZS hfcTCD/2GlRP2vEnXl8fZELG5ov+jEeNN1NuNPG/+ILwHk0UR7xQ1NNCqKVxJcVoAZ xNHZdTRFU33XFwyyX0nVQI7KL8Ac01gv5HMjGUyo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727398AbfKJClX (ORCPT ); Sat, 9 Nov 2019 21:41:23 -0500 Received: from mail.kernel.org ([198.145.29.99]:34370 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727097AbfKJCkv (ORCPT ); Sat, 9 Nov 2019 21:40:51 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2409321019; Sun, 10 Nov 2019 02:40:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573353650; bh=SXNKvy0fhdk/59LQap0bFKFWEbNXfleA9TbgtbVruJo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aUgvQYh+fuRLDOri81VJlLlITr8Ko/e1d5ZKURvdnBHMuXmOn7RvmNbj0Hu8+6z98 uw7EmyknBukMbHmZdJuqng9pMphRqAXplgUOLnaaLZPnZ/RCIu66vKU6/td88FDv2S 2/tSRyoW14r3C6+4xh7yT7cYUD0ZziPviZ8rjhqg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Breno Leitao , Gustavo Romero , Michael Ellerman , Sasha Levin , linuxppc-dev@lists.ozlabs.org, linux-kselftest@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 027/191] selftests/powerpc: Do not fail with reschedule Date: Sat, 9 Nov 2019 21:37:29 -0500 Message-Id: <20191110024013.29782-27-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191110024013.29782-1-sashal@kernel.org> References: <20191110024013.29782-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Breno Leitao [ Upstream commit 44d947eff19d64384efc06069509db7a0a1103b0 ] There are cases where the test is not expecting to have the transaction aborted, but, the test process might have been rescheduled, either in the OS level or by KVM (if it is running on a KVM guest machine). The process reschedule will cause a treclaim/recheckpoint which will cause the transaction to doom, aborting the transaction as soon as the process is rescheduled back to the CPU. This might cause the test to fail, but this is not a failure in essence. If that is the case, TEXASR[FC] is indicated with either TM_CAUSE_RESCHEDULE or TM_CAUSE_KVM_RESCHEDULE for KVM interruptions. In this scenario, ignore these two failures and avoid the whole test to return failure. Signed-off-by: Breno Leitao Reviewed-by: Gustavo Romero Signed-off-by: Michael Ellerman Signed-off-by: Sasha Levin --- tools/testing/selftests/powerpc/tm/tm-unavailable.c | 9 ++++++--- tools/testing/selftests/powerpc/tm/tm.h | 9 +++++++++ 2 files changed, 15 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/powerpc/tm/tm-unavailable.c b/tools/testing/selftests/powerpc/tm/tm-unavailable.c index 156c8e750259b..09894f4ff62e6 100644 --- a/tools/testing/selftests/powerpc/tm/tm-unavailable.c +++ b/tools/testing/selftests/powerpc/tm/tm-unavailable.c @@ -236,7 +236,8 @@ void *tm_una_ping(void *input) } /* Check if we were not expecting a failure and a it occurred. */ - if (!expecting_failure() && is_failure(cr_)) { + if (!expecting_failure() && is_failure(cr_) && + !failure_is_reschedule()) { printf("\n\tUnexpected transaction failure 0x%02lx\n\t", failure_code()); return (void *) -1; @@ -244,9 +245,11 @@ void *tm_una_ping(void *input) /* * Check if TM failed due to the cause we were expecting. 0xda is a - * TM_CAUSE_FAC_UNAV cause, otherwise it's an unexpected cause. + * TM_CAUSE_FAC_UNAV cause, otherwise it's an unexpected cause, unless + * it was caused by a reschedule. */ - if (is_failure(cr_) && !failure_is_unavailable()) { + if (is_failure(cr_) && !failure_is_unavailable() && + !failure_is_reschedule()) { printf("\n\tUnexpected failure cause 0x%02lx\n\t", failure_code()); return (void *) -1; diff --git a/tools/testing/selftests/powerpc/tm/tm.h b/tools/testing/selftests/powerpc/tm/tm.h index df4204247d45c..5518b1d4ef8b2 100644 --- a/tools/testing/selftests/powerpc/tm/tm.h +++ b/tools/testing/selftests/powerpc/tm/tm.h @@ -52,6 +52,15 @@ static inline bool failure_is_unavailable(void) return (failure_code() & TM_CAUSE_FAC_UNAV) == TM_CAUSE_FAC_UNAV; } +static inline bool failure_is_reschedule(void) +{ + if ((failure_code() & TM_CAUSE_RESCHED) == TM_CAUSE_RESCHED || + (failure_code() & TM_CAUSE_KVM_RESCHED) == TM_CAUSE_KVM_RESCHED) + return true; + + return false; +} + static inline bool failure_is_nesting(void) { return (__builtin_get_texasru() & 0x400000); -- 2.20.1