linux-kernel - [PATCH 05/16] lockdep: Cleanup PREEMPT

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Message-Id: <20201029165019.14218-5-urezki@gmail.com>
Date:   Thu, 29 Oct 2020 17:50:08 +0100
From:   "Uladzislau Rezki (Sony)" <urezki@...il.com>
To:     LKML <linux-kernel@...r.kernel.org>, RCU <rcu@...r.kernel.org>,
        "Paul E . McKenney" <paulmck@...nel.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Michal Hocko <mhocko@...e.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Theodore Y . Ts'o" <tytso@....edu>,
        Joel Fernandes <joel@...lfernandes.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Uladzislau Rezki <urezki@...il.com>,
        Oleksiy Avramchenko <oleksiy.avramchenko@...ymobile.com>,
        Ingo Molnar <mingo@...nel.org>, Will Deacon <will@...nel.org>
Subject: [PATCH 05/16] lockdep: Cleanup PREEMPT_COUNT leftovers

From: Thomas Gleixner <tglx@...utronix.de>

CONFIG_PREEMPT_COUNT is now unconditionally enabled and will be
removed. Cleanup the leftovers before doing so.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Will Deacon <will@...nel.org>
Acked-by: Will Deacon <will@...nel.org>
[ Rezki: Adopted for 5.10.0-rc1 kernel. ]
Signed-off-by: Uladzislau Rezki (Sony) <urezki@...il.com>
---
 include/linux/lockdep.h | 6 ++----
 lib/Kconfig.debug       | 1 -
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index f5594879175a..d05db575f60f 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -580,16 +580,14 @@ do {									\
 
 #define lockdep_assert_preemption_enabled()				\
 do {									\
-	WARN_ON_ONCE(IS_ENABLED(CONFIG_PREEMPT_COUNT)	&&		\
-		     __lockdep_enabled			&&		\
+	WARN_ON_ONCE(__lockdep_enabled			&&		\
 		     (preempt_count() != 0		||		\
 		      !this_cpu_read(hardirqs_enabled)));		\
 } while (0)
 
 #define lockdep_assert_preemption_disabled()				\
 do {									\
-	WARN_ON_ONCE(IS_ENABLED(CONFIG_PREEMPT_COUNT)	&&		\
-		     __lockdep_enabled			&&		\
+	WARN_ON_ONCE(__lockdep_enabled			&&		\
 		     (preempt_count() == 0		&&		\
 		      this_cpu_read(hardirqs_enabled)));		\
 } while (0)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 89c9a177fb9b..03a85065805e 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1159,7 +1159,6 @@ config PROVE_LOCKING
 	select DEBUG_RWSEMS
 	select DEBUG_WW_MUTEX_SLOWPATH
 	select DEBUG_LOCK_ALLOC
-	select PREEMPT_COUNT
 	select TRACE_IRQFLAGS
 	default n
 	help
-- 
2.20.1