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=-2.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT 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 0268FC43144 for ; Thu, 28 Jun 2018 18:21:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B5CA727794 for ; Thu, 28 Jun 2018 18:21:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=joelfernandes.org header.i=@joelfernandes.org header.b="KcVU1SmZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B5CA727794 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=joelfernandes.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030420AbeF1SVp (ORCPT ); Thu, 28 Jun 2018 14:21:45 -0400 Received: from mail-pg0-f68.google.com ([74.125.83.68]:43225 "EHLO mail-pg0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S967769AbeF1SVb (ORCPT ); Thu, 28 Jun 2018 14:21:31 -0400 Received: by mail-pg0-f68.google.com with SMTP id a14-v6so2821668pgw.10 for ; Thu, 28 Jun 2018 11:21:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelfernandes.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=0y0Y6HhK02jQ+sXqM8QUkLbOeY++kM/KqedsahzGKIA=; b=KcVU1SmZc5IpCf44NhAy8Pqh3eRt9lKH1WVNZwcFCRIVYuvnN21/R9mmAvkIgS4rXs khW7D/YAdFZjgz/rFWqRlCkm7DL8HsMVEcUA8SudqlaJ6IWqtoVFwrB8GLRSnwc+RSq0 UKsYhNh2qEIdLAiuVsuZ+HO3i2e+o9AFFYteU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=0y0Y6HhK02jQ+sXqM8QUkLbOeY++kM/KqedsahzGKIA=; b=GSmk0ffntFSXV5ijTqvHkzzVbhC/Rf9JBgP8I09mjZjSTg2i2trqwG1M75ohLroD1/ YZuQOsibQ4Fn8xv+FFKW7G9brc96WTbtQ7ANLDJOyNuMA4a1xcFBFrGEfFYkHjWM0DxO I82tgjLYuQ9uY2xBVUIyOHHvl/C3a2ckEMXAWZgJ5jlF84RyHYI6zu7HARoeGpLKuaxF ZQVK2pqzBken/Qqc54osOMlFJq67TS8ZSlbfD2wVgDg7p3YVhsbJOP+fnspVMWQvPBK1 xntolYr5oanqDAqXD9guR/FmKCnN5Qh+S1Twx3XGdZSPLiBmjHmvC7VlBcO05ZxnoIdw WGBQ== X-Gm-Message-State: APt69E1RAHYsibi3abBYgFGYbrSGseOmDuNDwhPVG0iwjA1x8q4OLOzA VKs5NHibMzQFhz0Z1zFIriTXuO1HGa0= X-Google-Smtp-Source: AAOMgpdOOuow3O9F4L6v2rmPd6vRSgsRCxMlO+4AuyDIJpnDaHZBjQp8tWxWCFGumlXVjbWu9814Lw== X-Received: by 2002:a62:6941:: with SMTP id e62-v6mr11261820pfc.56.1530210090656; Thu, 28 Jun 2018 11:21:30 -0700 (PDT) Received: from joelaf.mtv.corp.google.com ([2620:0:1000:1600:3122:ea9c:d178:eb]) by smtp.gmail.com with ESMTPSA id o4-v6sm16055767pfa.128.2018.06.28.11.21.29 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 28 Jun 2018 11:21:30 -0700 (PDT) From: Joel Fernandes To: linux-kernel@vger.kernel.org Cc: Paul McKenney , Joel Fernandes , Boqun Feng , Byungchul Park , Ingo Molnar , Julia Cartwright , linux-kselftest@vger.kernel.org, Masami Hiramatsu , Mathieu Desnoyers , Namhyung Kim , Peter Zijlstra , Steven Rostedt , Thomas Glexiner , Tom Zanussi Subject: [PATCH v9 1/7] srcu: Add notrace variants of srcu_read_{lock,unlock} Date: Thu, 28 Jun 2018 11:21:13 -0700 Message-Id: <20180628182119.226030-2-joel@joelfernandes.org> X-Mailer: git-send-email 2.18.0.rc2.346.g013aa6912e-goog In-Reply-To: <20180628182119.226030-1-joel@joelfernandes.org> References: <20180628182119.226030-1-joel@joelfernandes.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Paul McKenney This is needed for a future tracepoint patch that uses srcu, and to make sure it doesn't call into lockdep. tracepoint code already calls notrace variants for rcu_read_lock_sched so this patch does the same for srcu which will be used in a later patch. Keeps it consistent with rcu-sched. [Joel: Added commit message] Reviewed-by: Steven Rostedt (VMware) Signed-off-by: Paul McKenney Signed-off-by: Joel Fernandes (Google) --- include/linux/srcu.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 91494d7e8e41..3e72a291c401 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -195,6 +195,16 @@ static inline int srcu_read_lock(struct srcu_struct *sp) __acquires(sp) return retval; } +/* Used by tracing, cannot be traced and cannot invoke lockdep. */ +static inline notrace int +srcu_read_lock_notrace(struct srcu_struct *sp) __acquires(sp) +{ + int retval; + + retval = __srcu_read_lock(sp); + return retval; +} + /** * srcu_read_unlock - unregister a old reader from an SRCU-protected structure. * @sp: srcu_struct in which to unregister the old reader. @@ -209,6 +219,13 @@ static inline void srcu_read_unlock(struct srcu_struct *sp, int idx) __srcu_read_unlock(sp, idx); } +/* Used by tracing, cannot be traced and cannot call lockdep. */ +static inline notrace void +srcu_read_unlock_notrace(struct srcu_struct *sp, int idx) __releases(sp) +{ + __srcu_read_unlock(sp, idx); +} + /** * smp_mb__after_srcu_read_unlock - ensure full ordering after srcu_read_unlock * -- 2.18.0.rc2.346.g013aa6912e-goog From mboxrd@z Thu Jan 1 00:00:00 1970 From: joel at joelfernandes.org (Joel Fernandes) Date: Thu, 28 Jun 2018 11:21:13 -0700 Subject: [PATCH v9 1/7] srcu: Add notrace variants of srcu_read_{lock,unlock} In-Reply-To: <20180628182119.226030-1-joel@joelfernandes.org> References: <20180628182119.226030-1-joel@joelfernandes.org> Message-ID: <20180628182119.226030-2-joel@joelfernandes.org> From: Paul McKenney This is needed for a future tracepoint patch that uses srcu, and to make sure it doesn't call into lockdep. tracepoint code already calls notrace variants for rcu_read_lock_sched so this patch does the same for srcu which will be used in a later patch. Keeps it consistent with rcu-sched. [Joel: Added commit message] Reviewed-by: Steven Rostedt (VMware) Signed-off-by: Paul McKenney Signed-off-by: Joel Fernandes (Google) --- include/linux/srcu.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 91494d7e8e41..3e72a291c401 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -195,6 +195,16 @@ static inline int srcu_read_lock(struct srcu_struct *sp) __acquires(sp) return retval; } +/* Used by tracing, cannot be traced and cannot invoke lockdep. */ +static inline notrace int +srcu_read_lock_notrace(struct srcu_struct *sp) __acquires(sp) +{ + int retval; + + retval = __srcu_read_lock(sp); + return retval; +} + /** * srcu_read_unlock - unregister a old reader from an SRCU-protected structure. * @sp: srcu_struct in which to unregister the old reader. @@ -209,6 +219,13 @@ static inline void srcu_read_unlock(struct srcu_struct *sp, int idx) __srcu_read_unlock(sp, idx); } +/* Used by tracing, cannot be traced and cannot call lockdep. */ +static inline notrace void +srcu_read_unlock_notrace(struct srcu_struct *sp, int idx) __releases(sp) +{ + __srcu_read_unlock(sp, idx); +} + /** * smp_mb__after_srcu_read_unlock - ensure full ordering after srcu_read_unlock * -- 2.18.0.rc2.346.g013aa6912e-goog -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 From: joel@joelfernandes.org (Joel Fernandes) Date: Thu, 28 Jun 2018 11:21:13 -0700 Subject: [PATCH v9 1/7] srcu: Add notrace variants of srcu_read_{lock,unlock} In-Reply-To: <20180628182119.226030-1-joel@joelfernandes.org> References: <20180628182119.226030-1-joel@joelfernandes.org> Message-ID: <20180628182119.226030-2-joel@joelfernandes.org> Content-Type: text/plain; charset="UTF-8" Message-ID: <20180628182113.6ZvRv5-OEr3yDzIAIbk2Vngogr2Hv-wf4eN8eQV1Ylg@z> From: Paul McKenney This is needed for a future tracepoint patch that uses srcu, and to make sure it doesn't call into lockdep. tracepoint code already calls notrace variants for rcu_read_lock_sched so this patch does the same for srcu which will be used in a later patch. Keeps it consistent with rcu-sched. [Joel: Added commit message] Reviewed-by: Steven Rostedt (VMware) Signed-off-by: Paul McKenney Signed-off-by: Joel Fernandes (Google) --- include/linux/srcu.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 91494d7e8e41..3e72a291c401 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -195,6 +195,16 @@ static inline int srcu_read_lock(struct srcu_struct *sp) __acquires(sp) return retval; } +/* Used by tracing, cannot be traced and cannot invoke lockdep. */ +static inline notrace int +srcu_read_lock_notrace(struct srcu_struct *sp) __acquires(sp) +{ + int retval; + + retval = __srcu_read_lock(sp); + return retval; +} + /** * srcu_read_unlock - unregister a old reader from an SRCU-protected structure. * @sp: srcu_struct in which to unregister the old reader. @@ -209,6 +219,13 @@ static inline void srcu_read_unlock(struct srcu_struct *sp, int idx) __srcu_read_unlock(sp, idx); } +/* Used by tracing, cannot be traced and cannot call lockdep. */ +static inline notrace void +srcu_read_unlock_notrace(struct srcu_struct *sp, int idx) __releases(sp) +{ + __srcu_read_unlock(sp, idx); +} + /** * smp_mb__after_srcu_read_unlock - ensure full ordering after srcu_read_unlock * -- 2.18.0.rc2.346.g013aa6912e-goog -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html