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,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 9A8EBC433E1 for ; Tue, 23 Jun 2020 00:31:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7BC0420842 for ; Tue, 23 Jun 2020 00:31:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592872260; bh=MrZxr8/zY8WIE42EIkUZiZo/6KE2/yUgAqOmiUMCwmk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ByxVYRwgjGqa2chWjJtkJUTw6zmeArF3VN3nXaogoxfA9y/56G4L/2xW+YGIqy5Lf jNb7bpJmp6ngvp9u69aCLlE7bAWkk5Rl4TxAskD1z/oT+2cm5cUjBk5iA77r1lP/D6 w/f9D55U34XbMDqN8CDBhuaKbYET2MEI5SCcvWH4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731843AbgFWAay (ORCPT ); Mon, 22 Jun 2020 20:30:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:55748 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731710AbgFWAaV (ORCPT ); Mon, 22 Jun 2020 20:30:21 -0400 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (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 42287208FE; Tue, 23 Jun 2020 00:30:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592872220; bh=MrZxr8/zY8WIE42EIkUZiZo/6KE2/yUgAqOmiUMCwmk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eYGvW83vPx+lm8fbV67OGS/W0TW7hS6YdcRJIUrX7zSxn1NFfj7JW9WDQqriGQI3g 5Q/PGmwhJq8HNWjSwuc9jo+KPfOXPbYsahlcOf3rg2JfpOSdGMM1/Lyrvb4jmldC0y Njyq9nT0VuUZyyo+TaG/cN/QCggpCYNE4USRWFiU= From: paulmck@kernel.org To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com, mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org, "Paul E. McKenney" Subject: [PATCH tip/core/rcu 25/30] refperf: Add test for RCU Tasks Trace readers. Date: Mon, 22 Jun 2020 17:30:08 -0700 Message-Id: <20200623003013.26252-25-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20200623002941.GA26089@paulmck-ThinkPad-P72> References: <20200623002941.GA26089@paulmck-ThinkPad-P72> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Paul E. McKenney" This commit adds testing for RCU Tasks Trace readers to the refperf module. Signed-off-by: Paul E. McKenney --- kernel/rcu/refperf.c | 33 +++++++++++++++++++++++++++++++-- 1 file changed, 31 insertions(+), 2 deletions(-) diff --git a/kernel/rcu/refperf.c b/kernel/rcu/refperf.c index 49fffb9..da7de9a 100644 --- a/kernel/rcu/refperf.c +++ b/kernel/rcu/refperf.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -157,7 +158,6 @@ static struct ref_perf_ops rcu_ops = { .name = "rcu" }; - // Definitions for SRCU ref perf testing. DEFINE_STATIC_SRCU(srcu_refctl_perf); static struct srcu_struct *srcu_ctlp = &srcu_refctl_perf; @@ -192,6 +192,35 @@ static struct ref_perf_ops srcu_ops = { .name = "srcu" }; +// Definitions for RCU Tasks Trace ref perf testing. +static void rcu_trace_ref_perf_read_section(const int nloops) +{ + int i; + + for (i = nloops; i >= 0; i--) { + rcu_read_lock_trace(); + rcu_read_unlock_trace(); + } +} + +static void rcu_trace_ref_perf_delay_section(const int nloops, const int udl, const int ndl) +{ + int i; + + for (i = nloops; i >= 0; i--) { + rcu_read_lock_trace(); + un_delay(udl, ndl); + rcu_read_unlock_trace(); + } +} + +static struct ref_perf_ops rcu_trace_ops = { + .init = rcu_sync_perf_init, + .readsection = rcu_trace_ref_perf_read_section, + .delaysection = rcu_trace_ref_perf_delay_section, + .name = "rcu-trace" +}; + // Definitions for reference count static atomic_t refcnt; @@ -584,7 +613,7 @@ ref_perf_init(void) long i; int firsterr = 0; static struct ref_perf_ops *perf_ops[] = { - &rcu_ops, &srcu_ops, &refcnt_ops, &rwlock_ops, &rwsem_ops, + &rcu_ops, &srcu_ops, &rcu_trace_ops, &refcnt_ops, &rwlock_ops, &rwsem_ops, }; if (!torture_init_begin(perf_type, verbose)) -- 2.9.5