linux-kernel - [tip:sched/rt] locking/spinlocks: Use CONFIG

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Date:   Wed, 31 Jul 2019 10:56:51 -0700
From:   tip-bot for Thomas Gleixner <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, pbonzini@...hat.com,
        torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
        peterz@...radead.org, hpa@...or.com, tglx@...utronix.de,
        mhiramat@...nel.org, rostedt@...dmis.org, paulmck@...ux.ibm.com
Subject: [tip:sched/rt] locking/spinlocks: Use CONFIG_PREEMPTION

Commit-ID:  27972765bd0410fc2ef5e86a41de17c71440a2dd
Gitweb:     https://git.kernel.org/tip/27972765bd0410fc2ef5e86a41de17c71440a2dd
Author:     Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Fri, 26 Jul 2019 23:19:39 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Wed, 31 Jul 2019 19:03:35 +0200

locking/spinlocks: Use CONFIG_PREEMPTION

CONFIG_PREEMPTION is selected by CONFIG_PREEMPT and by
CONFIG_PREEMPT_RT. Both PREEMPT and PREEMPT_RT require the same
functionality which today depends on CONFIG_PREEMPT.

Adjust the comments in the locking code.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Paolo Bonzini <pbonzini@...hat.com>
Cc: Paul E. McKenney <paulmck@...ux.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Steven Rostedt <rostedt@...dmis.org>
Link: http://lkml.kernel.org/r/20190726212124.302995288@linutronix.de
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 include/linux/spinlock.h         | 2 +-
 include/linux/spinlock_api_smp.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index ed7c4d6b8235..031ce8617df8 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -214,7 +214,7 @@ static inline void do_raw_spin_unlock(raw_spinlock_t *lock) __releases(lock)
 
 /*
  * Define the various spin_lock methods.  Note we define these
- * regardless of whether CONFIG_SMP or CONFIG_PREEMPT are set. The
+ * regardless of whether CONFIG_SMP or CONFIG_PREEMPTION are set. The
  * various methods are defined as nops in the case they are not
  * required.
  */
diff --git a/include/linux/spinlock_api_smp.h b/include/linux/spinlock_api_smp.h
index 42dfab89e740..b762eaba4cdf 100644
--- a/include/linux/spinlock_api_smp.h
+++ b/include/linux/spinlock_api_smp.h
@@ -96,7 +96,7 @@ static inline int __raw_spin_trylock(raw_spinlock_t *lock)
 
 /*
  * If lockdep is enabled then we use the non-preemption spin-ops
- * even on CONFIG_PREEMPT, because lockdep assumes that interrupts are
+ * even on CONFIG_PREEMPTION, because lockdep assumes that interrupts are
  * not re-enabled during lock-acquire (which the preempt-spin-ops do):
  */
 #if !defined(CONFIG_GENERIC_LOCKBREAK) || defined(CONFIG_DEBUG_LOCK_ALLOC)