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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29AB5C77B73 for ; Mon, 8 May 2023 11:33:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236023AbjEHLda (ORCPT ); Mon, 8 May 2023 07:33:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51246 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235959AbjEHLdP (ORCPT ); Mon, 8 May 2023 07:33:15 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A33073D223 for ; Mon, 8 May 2023 04:32:31 -0700 (PDT) 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 D4D26630F4 for ; Mon, 8 May 2023 11:32:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E3B42C433D2; Mon, 8 May 2023 11:32:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683545531; bh=o/RsRvPsDCqKSPlyZcxcCkqOJneHDWqXUSXTgodD6qY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Nh1ztOjjzYPUkBr6wE7z8rpGCGTaPd7bdZlH2vVGtqSAzlcq6Wv5S6rkDOL8tZbvu gW7OWWk7oYS0yW44OfAU09gLSuwrTF5Vys9D392O41MJdODaNs9kbUsIa3TsiZVEMY srJ28zqvt9vvM7EYNcP/UlCju/hxokp3Ube5mvRE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Reinette Chatre , Shuah Khan , Sasha Levin Subject: [PATCH 5.15 063/371] selftests/resctrl: Allow ->setup() to return errors Date: Mon, 8 May 2023 11:44:24 +0200 Message-Id: <20230508094814.580506488@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094811.912279944@linuxfoundation.org> References: <20230508094811.912279944@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ilpo Järvinen [ Upstream commit fa10366cc6f4cc862871f8938426d85c2481f084 ] resctrl_val() assumes ->setup() always returns either 0 to continue tests or < 0 in case of the normal termination of tests after x runs. The latter overlaps with normal error returns. Define END_OF_TESTS (=1) to differentiate the normal termination of tests and return errors as negative values. Alter callers of ->setup() to handle errors properly. Fixes: 790bf585b0ee ("selftests/resctrl: Add Cache Allocation Technology (CAT) selftest") Fixes: ecdbb911f22d ("selftests/resctrl: Add MBM test") Signed-off-by: Ilpo Järvinen Reviewed-by: Reinette Chatre Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin --- tools/testing/selftests/resctrl/cache.c | 4 +++- tools/testing/selftests/resctrl/cat_test.c | 2 +- tools/testing/selftests/resctrl/cmt_test.c | 2 +- tools/testing/selftests/resctrl/mba_test.c | 2 +- tools/testing/selftests/resctrl/mbm_test.c | 2 +- tools/testing/selftests/resctrl/resctrl.h | 2 ++ tools/testing/selftests/resctrl/resctrl_val.c | 4 +++- 7 files changed, 12 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selftests/resctrl/cache.c index 68ff856d36f0b..0485863a169f2 100644 --- a/tools/testing/selftests/resctrl/cache.c +++ b/tools/testing/selftests/resctrl/cache.c @@ -244,10 +244,12 @@ int cat_val(struct resctrl_val_param *param) while (1) { if (!strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR))) { ret = param->setup(1, param); - if (ret) { + if (ret == END_OF_TESTS) { ret = 0; break; } + if (ret < 0) + break; ret = reset_enable_llc_perf(bm_pid, param->cpu_no); if (ret) break; diff --git a/tools/testing/selftests/resctrl/cat_test.c b/tools/testing/selftests/resctrl/cat_test.c index 1c5e90c632548..2d3c7c77ab6cb 100644 --- a/tools/testing/selftests/resctrl/cat_test.c +++ b/tools/testing/selftests/resctrl/cat_test.c @@ -40,7 +40,7 @@ static int cat_setup(int num, ...) /* Run NUM_OF_RUNS times */ if (p->num_of_runs >= NUM_OF_RUNS) - return -1; + return END_OF_TESTS; if (p->num_of_runs == 0) { sprintf(schemata, "%lx", p->mask); diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c index 8968e36db99d7..3b0454e7fc826 100644 --- a/tools/testing/selftests/resctrl/cmt_test.c +++ b/tools/testing/selftests/resctrl/cmt_test.c @@ -32,7 +32,7 @@ static int cmt_setup(int num, ...) /* Run NUM_OF_RUNS times */ if (p->num_of_runs >= NUM_OF_RUNS) - return -1; + return END_OF_TESTS; p->num_of_runs++; diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c index 1a1bdb6180cf2..f32289ae17aeb 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -41,7 +41,7 @@ static int mba_setup(int num, ...) return 0; if (allocation < ALLOCATION_MIN || allocation > ALLOCATION_MAX) - return -1; + return END_OF_TESTS; sprintf(allocation_str, "%d", allocation); diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c index 8392e5c55ed02..280187628054d 100644 --- a/tools/testing/selftests/resctrl/mbm_test.c +++ b/tools/testing/selftests/resctrl/mbm_test.c @@ -95,7 +95,7 @@ static int mbm_setup(int num, ...) /* Run NUM_OF_RUNS times */ if (num_of_runs++ >= NUM_OF_RUNS) - return -1; + return END_OF_TESTS; va_start(param, num); p = va_arg(param, struct resctrl_val_param *); diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index f0ded31fb3c7c..f44fa2de4d986 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -37,6 +37,8 @@ #define ARCH_INTEL 1 #define ARCH_AMD 2 +#define END_OF_TESTS 1 + #define PARENT_EXIT(err_msg) \ do { \ perror(err_msg); \ diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index dd907809d0b29..02110e7ee6361 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -734,10 +734,12 @@ int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param) /* Test runs until the callback setup() tells the test to stop. */ while (1) { ret = param->setup(1, param); - if (ret) { + if (ret == END_OF_TESTS) { ret = 0; break; } + if (ret < 0) + break; if (!strncmp(resctrl_val, MBM_STR, sizeof(MBM_STR)) || !strncmp(resctrl_val, MBA_STR, sizeof(MBA_STR))) { -- 2.39.2