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[23.128.96.33]) by mx.google.com with ESMTPS id d4-20020a056a0010c400b00690fec2f3b6si3291667pfu.193.2023.10.19.04.55.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Oct 2023 04:55:55 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.33 as permitted sender) client-ip=23.128.96.33; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=kf6TULOc; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.33 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by lipwig.vger.email (Postfix) with ESMTP id 2BD5C8043ECB; Thu, 19 Oct 2023 04:55:24 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at lipwig.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235310AbjJSLzH (ORCPT + 25 others); Thu, 19 Oct 2023 07:55:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33226 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235234AbjJSLzD (ORCPT ); Thu, 19 Oct 2023 07:55:03 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5A295BE; Thu, 19 Oct 2023 04:55:02 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A9756C433CA; Thu, 19 Oct 2023 11:54:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1697716502; bh=sSbMY5CCWBmj3HxnZsWM2SzuTJFQ7pmsTLrLgETzDzc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kf6TULOcwoQ0k/urPmEbr8nA8gx7X3lqPGmstxbvYn5iU5ujZYgb7H9MoGR3aZynj pBURPPNLMy0as1zjtoRzybBs4P55OuBhVf69lgs8PEXMWC9a1mPYjkURxsWW26mGDr aQUuIyzaPB2qPXjhTfjgAG/2NE71zTlCrDlrHAIuFK5rzUADAfFL6wXQp36ZHYAfpw 7F0KUMeQ2wzVscwt8DSPnRdweG0vnIMLN9AUY52N6YsliJUHVuiPImkRSa+Am/BzOF W82uvz9a1b0iKfh/7WCqJC/s1UAYjM1JDhAxt7JzkPbQww6QLQTRpEg9P9LEkGmNu/ Vyskb1/quY7QA== From: Frederic Weisbecker To: LKML Cc: "Paul E. McKenney" , Boqun Feng , Joel Fernandes , Josh Triplett , Mathieu Desnoyers , Neeraj Upadhyay , Steven Rostedt , Uladzislau Rezki , rcu , Frederic Weisbecker Subject: [PATCH 1/3] refscale: Fix misplaced data re-read Date: Thu, 19 Oct 2023 13:54:50 +0200 Message-Id: <20231019115452.1215974-2-frederic@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231019115452.1215974-1-frederic@kernel.org> References: <20231019115452.1215974-1-frederic@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-1.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lipwig.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (lipwig.vger.email [0.0.0.0]); Thu, 19 Oct 2023 04:55:24 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1780184835168936316 X-GMAIL-MSGID: 1780184835168936316 From: "Paul E. McKenney" This commit fixes a misplaced data re-read in the typesafe code. The reason that this was not noticed is that this is a performance test with no writers, so a mismatch could not occur. Signed-off-by: Paul E. McKenney Signed-off-by: Frederic Weisbecker --- kernel/rcu/refscale.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/rcu/refscale.c b/kernel/rcu/refscale.c index 91a0fd0d4d9a..750a63e99539 100644 --- a/kernel/rcu/refscale.c +++ b/kernel/rcu/refscale.c @@ -655,12 +655,12 @@ static void typesafe_delay_section(const int nloops, const int udl, const int nd goto retry; } un_delay(udl, ndl); + b = READ_ONCE(rtsp->a); // Remember, seqlock read-side release can fail. if (!rts_release(rtsp, start)) { rcu_read_unlock(); goto retry; } - b = READ_ONCE(rtsp->a); WARN_ONCE(a != b, "Re-read of ->a changed from %u to %u.\n", a, b); b = rtsp->b; rcu_read_unlock(); From patchwork Thu Oct 19 11:54:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frederic Weisbecker X-Patchwork-Id: 155460 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:612c:2010:b0:403:3b70:6f57 with SMTP id fe16csp326133vqb; Thu, 19 Oct 2023 04:55:57 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGkhT25gv2NXLcjVSWbxCco1/tdnzFgS4TrVy+n2BT0tuqyz/dFaBpmKLJ4pzGz5J8YpQDf X-Received: by 2002:a05:6a20:5483:b0:134:a4e2:4ac8 with SMTP id i3-20020a056a20548300b00134a4e24ac8mr1941675pzk.39.1697716556736; Thu, 19 Oct 2023 04:55:56 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1697716556; cv=none; d=google.com; s=arc-20160816; b=i6Bv6NCrEV8zzRU9Gc/uLdyPUFwRKINQ9rHDznNgZk0LN5a/kcWzXSQkFEoZspms0g HS8lLYdcsTC25C+vOhlmdPz5mTmuOqd0WgGoTy59MgNf93GVbhgwfxk4TmySOhVBlY4M 4+urLnz8htnikAIqpo23JMFvs2MUMB0MC668Tn6l1xqFPTU3Q4FMEgcHS8LiIp54k/0I mkLHiqNPnR/oF1tjqFtBgERaOJC9ZSK5QCPfsE+anOiL/ktFLvC10pXvinqGMrAivMpX XqRfuCA2LbCF7Alx6pTHC3s5ON6mhQ2yKMiiJgHss6D6F5v1GpO07vUPJogdMRxK4LcH a45g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=aZyT0WvcCC+b98R4rWCTWPqOhKcDfEumV09DRbbO8xI=; fh=9o1vzmbQvXEiiOZAoGEKGHmVR4Ieb6r+octdNZgYFWA=; b=VMG/FBaybFOKpBQ0vOlTGqiZRtMBUEpneu+zzq9aL/YzebpEs2bfUR8tHod/0wfcJD uHI0KR2W5jHhYapgNKPBalnqKAGqAHPMQACXcMGlUnFpSSjii4utJwskYInx4lCuK9Up DP8kwlqPLubYWyW9h6cu4IpVa4ExOXoWGHXA9YOWDfw35h6+d7Op7wc1EN+eqDPHsq3w fpjG9OcL5MkZjAetB6fROiOr3uULGuO0QNTFUWR/CI3Mh+wfIPwYg1KuoaADOdnDV49q rnFRjb/OD6UY4yqiDH76XpYLg1rWTvbJRUMNfoiMDTW4tZXZWDXIW8whX/L3c6vFSxTo 6BBg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=Q7R5PODf; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:3 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from lipwig.vger.email (lipwig.vger.email. [2620:137:e000::3:3]) by mx.google.com with ESMTPS id f11-20020a17090274cb00b001c62ca6d540si2012064plt.77.2023.10.19.04.55.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Oct 2023 04:55:56 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:3 as permitted sender) client-ip=2620:137:e000::3:3; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=Q7R5PODf; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:3 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by lipwig.vger.email (Postfix) with ESMTP id 40499824C4E0; Thu, 19 Oct 2023 04:55:43 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at lipwig.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345433AbjJSLzJ (ORCPT + 25 others); Thu, 19 Oct 2023 07:55:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235301AbjJSLzG (ORCPT ); Thu, 19 Oct 2023 07:55:06 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2351DCF; Thu, 19 Oct 2023 04:55:05 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 71318C433CB; Thu, 19 Oct 2023 11:55:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1697716504; bh=Go3oKLV2iwygVow1ZLQqYglzITzKKMjGLPjpDzrAZBc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q7R5PODf/z3kMx+FQKdwekIaM7FboamFP9pEXVbZCvWTXyybu9mERIPU6/5DMbG8W fMKR4cLZdApb+fX+yUow94ODrD4l2zF2ODLNBuMPb9/gAhITmlAsOx70OscuK9Bc4h lshWDkbl9OHMaEhfPcBIGv/HL9EI1IIyL67DGWwYHg+Uit4LKw+KrHPUBaBpUI12nz As0SZCvtgiuLs1wc3hWGSSmqqpetOaEonNkxwELDE//KqRLs3eUkw9gqZItwJyVvMu n9Y9Ov0DV8RxnCaruLDy/lUIwPkD0cS4AkC9IU0rsjBMgZRhyMewm/OqqlNBGlBai5 HR9B958lYlZXQ== From: Frederic Weisbecker To: LKML Cc: "Paul E. McKenney" , Boqun Feng , Joel Fernandes , Josh Triplett , Mathieu Desnoyers , Neeraj Upadhyay , Steven Rostedt , Uladzislau Rezki , rcu , Frederic Weisbecker Subject: [PATCH 2/3] refscale: Print out additional module parameters Date: Thu, 19 Oct 2023 13:54:51 +0200 Message-Id: <20231019115452.1215974-3-frederic@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231019115452.1215974-1-frederic@kernel.org> References: <20231019115452.1215974-1-frederic@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-1.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lipwig.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (lipwig.vger.email [0.0.0.0]); Thu, 19 Oct 2023 04:55:44 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1780184835894206086 X-GMAIL-MSGID: 1780184835894206086 From: "Paul E. McKenney" The refscale.verbose_batched and refscale.lookup_instances module parameters are omitted from the ref_scale_print_module_parms() beginning-of-test output. This commit therefore adds them. Signed-off-by: Paul E. McKenney Signed-off-by: Frederic Weisbecker --- kernel/rcu/refscale.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/rcu/refscale.c b/kernel/rcu/refscale.c index 750a63e99539..2c2648a3ad30 100644 --- a/kernel/rcu/refscale.c +++ b/kernel/rcu/refscale.c @@ -1025,8 +1025,8 @@ static void ref_scale_print_module_parms(struct ref_scale_ops *cur_ops, const char *tag) { pr_alert("%s" SCALE_FLAG - "--- %s: verbose=%d shutdown=%d holdoff=%d loops=%ld nreaders=%d nruns=%d readdelay=%d\n", scale_type, tag, - verbose, shutdown, holdoff, loops, nreaders, nruns, readdelay); + "--- %s: verbose=%d verbose_batched=%d shutdown=%d holdoff=%d lookup_instances=%ld loops=%ld nreaders=%d nruns=%d readdelay=%d\n", scale_type, tag, + verbose, verbose_batched, shutdown, holdoff, lookup_instances, loops, nreaders, nruns, readdelay); } static void From patchwork Thu Oct 19 11:54:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frederic Weisbecker X-Patchwork-Id: 155461 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:612c:2010:b0:403:3b70:6f57 with SMTP id fe16csp326152vqb; Thu, 19 Oct 2023 04:55:59 -0700 (PDT) X-Google-Smtp-Source: AGHT+IE6n2QUuFXKiu7rxesZ25GbDjCG7UiRnLemzknc/fSFVtU+fXYsvLsyPsL4IGkoCNJ5hKGB X-Received: by 2002:a17:90b:4b52:b0:27d:4278:ba53 with SMTP id mi18-20020a17090b4b5200b0027d4278ba53mr1849663pjb.47.1697716559217; Thu, 19 Oct 2023 04:55:59 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1697716559; cv=none; d=google.com; s=arc-20160816; b=DcpzexaA/34S0M7WF/gNO2mZ7UcwfYc283PzEOsEvMeHH9YQvuhe6W2fM5hJJbOHsu iPDTdxoXyxG6zD3ycuw8U5MSUDlwhC9dPUijlDVRiDIWkdy3sgnTY3yESOPVIhMMx6xa E15kD/1m9Rnnyze8SjSWOzt1vyg6L5idGcXS8PE9lKzBHwTURgZtJP+647YdAXNdhPHs zd+CN0UAonuFSbsoylYzmd/9r6/53wSlzFCvEI4jRgMFfWnDjXT48TIzooLr3ihTT3KG 55BMjcY/kNRGz3+O6Bt/he3C40WUmUTMd3b5Rus5cLJS3WJOy5jd6PRYLji/xyyZrql3 dRxA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=y0kXT7vjEvYp1zbLfS2aZM4m0D1jzH4fgdSY8qFX3qE=; fh=9o1vzmbQvXEiiOZAoGEKGHmVR4Ieb6r+octdNZgYFWA=; b=s3ETa+vJewEcSsNTiiXAhfLnqP46bBclvKNen6LayUu5TyANNvoohfIoCiljQTdzva iuYHIAHTtSFM4/uakLE5+E3fH80cJ0vDTIMI8bWI08bFf6VCdw/fyuNIiDynSxs+7B+o 3z+TLalnE2yF33Bs8yXMT+a7LEWHyY3xZRMgDnW451TD8TJdnpjQ7PfjuKYIR/UKMYfq bjYNQ599iQdMPUGjJxaK2ixyN9qWU1OyitwnmM9wENGMkCXOElUrKJcEwkPlFfqsvbaE 59TuKsVr7yqJyI1h81m98ms2y+0dsQO/R5kfyP4xCmAj73wqKStiJt8T9DAXjoKkh3Up QZkg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=T+ZhNOxM; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from groat.vger.email (groat.vger.email. [23.128.96.35]) by mx.google.com with ESMTPS id on7-20020a17090b1d0700b0027d1567f5e6si2068938pjb.133.2023.10.19.04.55.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Oct 2023 04:55:59 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) client-ip=23.128.96.35; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=T+ZhNOxM; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by groat.vger.email (Postfix) with ESMTP id 3D7CC80BD5F0; Thu, 19 Oct 2023 04:55:55 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at groat.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345471AbjJSLzR (ORCPT + 25 others); Thu, 19 Oct 2023 07:55:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33338 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235313AbjJSLzL (ORCPT ); Thu, 19 Oct 2023 07:55:11 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DCD76132; Thu, 19 Oct 2023 04:55:07 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 36A7EC433CA; Thu, 19 Oct 2023 11:55:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1697716507; bh=RqzxDVJIn6SaPlB+MPCpu60PL8TAZpKyGGU/oT7X828=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T+ZhNOxMvLIpscISoIBjI/R3TAf3zXOb07KrqDOnbeBw7Qog//OdwXtuLObNhsUol HFYz49iYHuV+dByD4W9XbS7I7ra8Z1za4Y6+dXdrAUdY/kCs1Ea60my5w7nv7a2aC8 Z/estc3DFEAXn3dFoDdUlCaJfgS5SPttnmfWw2+rPsQjXlDhVt3bY4GxrMbil/er4j lS0Aru9X9BG88QrRHrCtglgjkMrpk55OFwlNrvgLwmdvgGQ2/FVjojM+QNpISSsvLS 8polyEJbar564igIzNLVMwVIcDcTGtSu4+WsDaLzisi30P8YT67TTWql9kCNqBILPc fuFRZN0B0NeFg== From: Frederic Weisbecker To: LKML Cc: "Paul E. McKenney" , Boqun Feng , Joel Fernandes , Josh Triplett , Mathieu Desnoyers , Neeraj Upadhyay , Steven Rostedt , Uladzislau Rezki , rcu , Frederic Weisbecker Subject: [PATCH 3/3] doc: Add refscale.lookup_instances to kernel-parameters.txt Date: Thu, 19 Oct 2023 13:54:52 +0200 Message-Id: <20231019115452.1215974-4-frederic@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231019115452.1215974-1-frederic@kernel.org> References: <20231019115452.1215974-1-frederic@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-1.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on groat.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (groat.vger.email [0.0.0.0]); Thu, 19 Oct 2023 04:55:55 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1780184838493797376 X-GMAIL-MSGID: 1780184838493797376 From: "Paul E. McKenney" This commit adds refscale.lookup_instances to kernel-parameters.txt. Signed-off-by: Paul E. McKenney Signed-off-by: Frederic Weisbecker --- Documentation/admin-guide/kernel-parameters.txt | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 0a1731a0f0ef..cf4f3262ce31 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5422,6 +5422,12 @@ test until boot completes in order to avoid interference. + refscale.lookup_instances= [KNL] + Number of data elements to use for the forms of + SLAB_TYPESAFE_BY_RCU testing. A negative number + is negated and multiplied by nr_cpu_ids, while + zero specifies nr_cpu_ids. + refscale.loops= [KNL] Set the number of loops over the synchronization primitive under test. Increasing this number