linux-kernel - [PATCH tip/core/rcu 28/30] refperf: Rename RCU_REF_PERF_TEST to RCU_REF_SCALE

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Message-Id: <20200623003013.26252-28-paulmck@kernel.org>
Date:   Mon, 22 Jun 2020 17:30:11 -0700
From:   paulmck@...nel.org
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com, mingo@...nel.org,
        jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com, joel@...lfernandes.org,
        "Paul E. McKenney" <paulmck@...nel.org>
Subject: [PATCH tip/core/rcu 28/30] refperf: Rename RCU_REF_PERF_TEST to RCU_REF_SCALE_TEST

From: "Paul E. McKenney" <paulmck@...nel.org>

The old Kconfig option name is all too easy to conflate with the
unrelated "perf" feature, so this commit renames RCU_REF_PERF_TEST to
RCU_REF_SCALE_TEST.

Reported-by: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 kernel/rcu/Kconfig.debug                                    | 4 ++--
 kernel/rcu/Makefile                                         | 2 +-
 kernel/rcu/refperf.c                                        | 6 +++---
 tools/testing/selftests/rcutorture/configs/refperf/CFcommon | 2 +-
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/kernel/rcu/Kconfig.debug b/kernel/rcu/Kconfig.debug
index 858765b..3cf6132 100644
--- a/kernel/rcu/Kconfig.debug
+++ b/kernel/rcu/Kconfig.debug
@@ -61,8 +61,8 @@ config RCU_TORTURE_TEST
 	  Say M if you want the RCU torture tests to build as a module.
 	  Say N if you are unsure.
 
-config RCU_REF_PERF_TEST
-	tristate "Performance tests for read-side synchronization (RCU and others)"
+config RCU_REF_SCALE_TEST
+	tristate "Scalability tests for read-side synchronization (RCU and others)"
 	depends on DEBUG_KERNEL
 	select TORTURE_TEST
 	select SRCU
diff --git a/kernel/rcu/Makefile b/kernel/rcu/Makefile
index ba7d826..45d562d 100644
--- a/kernel/rcu/Makefile
+++ b/kernel/rcu/Makefile
@@ -12,7 +12,7 @@ obj-$(CONFIG_TREE_SRCU) += srcutree.o
 obj-$(CONFIG_TINY_SRCU) += srcutiny.o
 obj-$(CONFIG_RCU_TORTURE_TEST) += rcutorture.o
 obj-$(CONFIG_RCU_PERF_TEST) += rcuperf.o
-obj-$(CONFIG_RCU_REF_PERF_TEST) += refperf.o
+obj-$(CONFIG_RCU_REF_SCALE_TEST) += refperf.o
 obj-$(CONFIG_TREE_RCU) += tree.o
 obj-$(CONFIG_TINY_RCU) += tiny.o
 obj-$(CONFIG_RCU_NEED_SEGCBLIST) += rcu_segcblist.o
diff --git a/kernel/rcu/refperf.c b/kernel/rcu/refperf.c
index 2bfdcdc..7c98057 100644
--- a/kernel/rcu/refperf.c
+++ b/kernel/rcu/refperf.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+
 //
-// Performance test comparing RCU vs other mechanisms
+// Scalability test comparing RCU vs other mechanisms
 // for acquiring references on objects.
 //
 // Copyright (C) Google, 2020.
@@ -59,7 +59,7 @@ MODULE_PARM_DESC(perf_type, "Type of test (rcu, srcu, refcnt, rwsem, rwlock.");
 torture_param(int, verbose, 0, "Enable verbose debugging printk()s");
 
 // Wait until there are multiple CPUs before starting test.
-torture_param(int, holdoff, IS_BUILTIN(CONFIG_RCU_REF_PERF_TEST) ? 10 : 0,
+torture_param(int, holdoff, IS_BUILTIN(CONFIG_RCU_REF_SCALE_TEST) ? 10 : 0,
 	      "Holdoff time before test start (s)");
 // Number of loops per experiment, all readers execute operations concurrently.
 torture_param(long, loops, 10000, "Number of loops per experiment.");
@@ -656,7 +656,7 @@ ref_perf_init(void)
 		for (i = 0; i < ARRAY_SIZE(perf_ops); i++)
 			pr_cont(" %s", perf_ops[i]->name);
 		pr_cont("\n");
-		WARN_ON(!IS_MODULE(CONFIG_RCU_REF_PERF_TEST));
+		WARN_ON(!IS_MODULE(CONFIG_RCU_REF_SCALE_TEST));
 		firsterr = -EINVAL;
 		cur_ops = NULL;
 		goto unwind;
diff --git a/tools/testing/selftests/rcutorture/configs/refperf/CFcommon b/tools/testing/selftests/rcutorture/configs/refperf/CFcommon
index 8ba5ba2..a98b58b 100644
--- a/tools/testing/selftests/rcutorture/configs/refperf/CFcommon
+++ b/tools/testing/selftests/rcutorture/configs/refperf/CFcommon
@@ -1,2 +1,2 @@
-CONFIG_RCU_REF_PERF_TEST=y
+CONFIG_RCU_REF_SCALE_TEST=y
 CONFIG_PRINTK_TIME=y
-- 
2.9.5