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=-14.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 2FB26C433DF for ; Thu, 27 Aug 2020 08:00:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0AF4B20825 for ; Thu, 27 Aug 2020 08:00:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="EC6JFCJ0"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="fCqpJw64" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728802AbgH0IAL (ORCPT ); Thu, 27 Aug 2020 04:00:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52478 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728358AbgH0HyS (ORCPT ); Thu, 27 Aug 2020 03:54:18 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 73502C061264; Thu, 27 Aug 2020 00:54:18 -0700 (PDT) Date: Thu, 27 Aug 2020 07:54:16 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1598514857; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lZRXyvtL1vuDckpPkE05Vn5NLrig7fdoj/FPnWJN3t4=; b=EC6JFCJ0YfnarMq1jkfN3YJ21LhEZxwZk2uAxUEVaqy9S83zJmsvZLjNk8nDjrJTB1lioJ JT/G0gF6R7fgk6ljeMOCCsg/GOEXrwn7DzQ0lYtW0AvIl6QJeAcd7gJ8w1SbBpC3sr2u1Y gObs866qTAUcVth8bmDtdQrwb3VySwqubnC7+WHeFinGRWu6te3IQnAoqrhKMC+gRiCQeJ ISKDjXfPwO02zUzl3Ekx6egjCvM1u63zJKMms68kmKzM8kafukFrqPGEEwvwZaP6e6iU02 vcYDRM+2zJv8xgUgyhTKfmRabcRYY4vukiAmkY5A6cqLW+J3BoSfWY24wDt6dw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1598514857; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lZRXyvtL1vuDckpPkE05Vn5NLrig7fdoj/FPnWJN3t4=; b=fCqpJw645sUZWT+scFcsIY6c4kx41iEjnV1qkuxWu1DLRjv6cfJGT6U7Fe6xrsJbBLIqm4 A+VGqIfI8EwBk8Aw== From: "tip-bot2 for Boqun Feng" Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: locking/core] lockdep/selftest: Unleash irq_read_recursion2 and add more Cc: Boqun Feng , "Peter Zijlstra (Intel)" , x86 , LKML In-Reply-To: <20200807074238.1632519-16-boqun.feng@gmail.com> References: <20200807074238.1632519-16-boqun.feng@gmail.com> MIME-Version: 1.0 Message-ID: <159851485628.20229.4921296450007884546.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the locking/core branch of tip: Commit-ID: 31e0d747708272356bee9b6a1b90c1e6525b0f6d Gitweb: https://git.kernel.org/tip/31e0d747708272356bee9b6a1b90c1e6525b0f6d Author: Boqun Feng AuthorDate: Fri, 07 Aug 2020 15:42:34 +08:00 Committer: Peter Zijlstra CommitterDate: Wed, 26 Aug 2020 12:42:06 +02:00 lockdep/selftest: Unleash irq_read_recursion2 and add more Now since we can handle recursive read related irq inversion deadlocks correctly, uncomment the irq_read_recursion2 and add more testcases. Signed-off-by: Boqun Feng Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20200807074238.1632519-16-boqun.feng@gmail.com --- lib/locking-selftest.c | 59 ++++++++++++++++++++++++++++++++--------- 1 file changed, 47 insertions(+), 12 deletions(-) diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c index 002d1ec..f65a658 100644 --- a/lib/locking-selftest.c +++ b/lib/locking-selftest.c @@ -1053,20 +1053,28 @@ GENERATE_PERMUTATIONS_3_EVENTS(irq_inversion_soft_wlock) #define E3() \ \ IRQ_ENTER(); \ - RL(A); \ + LOCK(A); \ L(B); \ U(B); \ - RU(A); \ + UNLOCK(A); \ IRQ_EXIT(); /* - * Generate 12 testcases: + * Generate 24 testcases: */ #include "locking-selftest-hardirq.h" -GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_hard) +#include "locking-selftest-rlock.h" +GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_hard_rlock) + +#include "locking-selftest-wlock.h" +GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_hard_wlock) #include "locking-selftest-softirq.h" -GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_soft) +#include "locking-selftest-rlock.h" +GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_soft_rlock) + +#include "locking-selftest-wlock.h" +GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_soft_wlock) #undef E1 #undef E2 @@ -1080,8 +1088,8 @@ GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_soft) \ IRQ_DISABLE(); \ L(B); \ - WL(A); \ - WU(A); \ + LOCK(A); \ + UNLOCK(A); \ U(B); \ IRQ_ENABLE(); @@ -1098,13 +1106,21 @@ GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_soft) IRQ_EXIT(); /* - * Generate 12 testcases: + * Generate 24 testcases: */ #include "locking-selftest-hardirq.h" -// GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion2_hard) +#include "locking-selftest-rlock.h" +GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion2_hard_rlock) + +#include "locking-selftest-wlock.h" +GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion2_hard_wlock) #include "locking-selftest-softirq.h" -// GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion2_soft) +#include "locking-selftest-rlock.h" +GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion2_soft_rlock) + +#include "locking-selftest-wlock.h" +GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion2_soft_wlock) #ifdef CONFIG_DEBUG_LOCK_ALLOC # define I_SPINLOCK(x) lockdep_reset_lock(&lock_##x.dep_map) @@ -1257,6 +1273,25 @@ static inline void print_testname(const char *testname) dotest(name##_rlock_##nr, SUCCESS, LOCKTYPE_RWLOCK); \ pr_cont("\n"); +#define DO_TESTCASE_2RW(desc, name, nr) \ + print_testname(desc"/"#nr); \ + pr_cont(" |"); \ + dotest(name##_wlock_##nr, FAILURE, LOCKTYPE_RWLOCK); \ + dotest(name##_rlock_##nr, SUCCESS, LOCKTYPE_RWLOCK); \ + pr_cont("\n"); + +#define DO_TESTCASE_2x2RW(desc, name, nr) \ + DO_TESTCASE_2RW("hard-"desc, name##_hard, nr) \ + DO_TESTCASE_2RW("soft-"desc, name##_soft, nr) \ + +#define DO_TESTCASE_6x2x2RW(desc, name) \ + DO_TESTCASE_2x2RW(desc, name, 123); \ + DO_TESTCASE_2x2RW(desc, name, 132); \ + DO_TESTCASE_2x2RW(desc, name, 213); \ + DO_TESTCASE_2x2RW(desc, name, 231); \ + DO_TESTCASE_2x2RW(desc, name, 312); \ + DO_TESTCASE_2x2RW(desc, name, 321); + #define DO_TESTCASE_6(desc, name) \ print_testname(desc); \ dotest(name##_spin, FAILURE, LOCKTYPE_SPIN); \ @@ -2121,8 +2156,8 @@ void locking_selftest(void) DO_TESTCASE_6x6("safe-A + unsafe-B #2", irqsafe4); DO_TESTCASE_6x6RW("irq lock-inversion", irq_inversion); - DO_TESTCASE_6x2("irq read-recursion", irq_read_recursion); -// DO_TESTCASE_6x2B("irq read-recursion #2", irq_read_recursion2); + DO_TESTCASE_6x2x2RW("irq read-recursion", irq_read_recursion); + DO_TESTCASE_6x2x2RW("irq read-recursion #2", irq_read_recursion2); ww_tests();