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Message-Id: <20190628102919.2345242-1-arnd@arndb.de>
Date: Fri, 28 Jun 2019 12:29:03 +0200
From: Arnd Bergmann <arnd@...db.de>
To: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>,
Andrew Morton <akpm@...ux-foundation.org>,
Bart Van Assche <bvanassche@....org>,
Frederic Weisbecker <frederic@...nel.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
Thomas Gleixner <tglx@...utronix.de>,
Waiman Long <longman@...hat.com>,
Will Deacon <will.deacon@....com>,
Yuyang Du <duyuyang@...il.com>, Ingo Molnar <mingo@...nel.org>,
linux-kernel@...r.kernel.org
Subject: [PATCH] locking/lockdep: clean up #ifdef checks
As Will Deacon points out, CONFIG_PROVE_LOCKING implies TRACE_IRQFLAGS,
so the conditions I added in the previous patch, and some others in the
same file can be simplified by only checking for the former.
No functional change.
Fixes: 886532aee3cd ("locking/lockdep: Move mark_lock() inside CONFIG_TRACE_IRQFLAGS && CONFIG_PROVE_LOCKING")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
kernel/locking/lockdep.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 341f52117f88..4861cf8e274b 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -448,7 +448,7 @@ static void print_lockdep_off(const char *bug_msg)
unsigned long nr_stack_trace_entries;
-#if defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING)
+#ifdef CONFIG_PROVE_LOCKING
/*
* Stack-trace: tightly packed array of stack backtrace
* addresses. Protected by the graph_lock.
@@ -491,7 +491,7 @@ unsigned int max_lockdep_depth;
DEFINE_PER_CPU(struct lockdep_stats, lockdep_stats);
#endif
-#if defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING)
+#ifdef CONFIG_PROVE_LOCKING
/*
* Locking printouts:
*/
@@ -2969,7 +2969,7 @@ static void check_chain_key(struct task_struct *curr)
#endif
}
-#if defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING)
+#ifdef CONFIG_PROVE_LOCKING
static int mark_lock(struct task_struct *curr, struct held_lock *this,
enum lock_usage_bit new_bit);
@@ -3608,7 +3608,7 @@ static int mark_lock(struct task_struct *curr, struct held_lock *this,
return ret;
}
-#else /* defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING) */
+#else /* CONFIG_PROVE_LOCKING */
static inline int
mark_usage(struct task_struct *curr, struct held_lock *hlock, int check)
@@ -3627,7 +3627,7 @@ static inline int separate_irq_context(struct task_struct *curr,
return 0;
}
-#endif /* defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING) */
+#endif /* CONFIG_PROVE_LOCKING */
/*
* Initialize a lock instance's lock-class mapping info:
@@ -4321,8 +4321,7 @@ static void __lock_unpin_lock(struct lockdep_map *lock, struct pin_cookie cookie
*/
static void check_flags(unsigned long flags)
{
-#if defined(CONFIG_PROVE_LOCKING) && defined(CONFIG_DEBUG_LOCKDEP) && \
- defined(CONFIG_TRACE_IRQFLAGS)
+#if defined(CONFIG_PROVE_LOCKING) && defined(CONFIG_DEBUG_LOCKDEP)
if (!debug_locks)
return;
--
2.20.0
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