linux-kernel - [tip:locking/core] locking/lockdep: Move valid_state() inside CONFIG_TRACE_IRQFLAGS && CONFIG_PROVE

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Date:   Thu, 18 Apr 2019 04:26:04 -0700
From:   tip-bot for Frederic Weisbecker <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
        frederic@...nel.org, peterz@...radead.org, tglx@...utronix.de,
        mingo@...nel.org, hpa@...or.com, paulmck@...ux.vnet.ibm.com,
        will.deacon@....com, linux-kernel@...r.kernel.org
Subject: [tip:locking/core] locking/lockdep: Move valid_state() inside
 CONFIG_TRACE_IRQFLAGS && CONFIG_PROVE_LOCKING

Commit-ID:  0d2cc3b3453254f1c56f9456ba03e092ed4cfb72
Gitweb:     https://git.kernel.org/tip/0d2cc3b3453254f1c56f9456ba03e092ed4cfb72
Author:     Frederic Weisbecker <frederic@...nel.org>
AuthorDate: Tue, 2 Apr 2019 18:02:41 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Thu, 18 Apr 2019 12:50:17 +0200

locking/lockdep: Move valid_state() inside CONFIG_TRACE_IRQFLAGS && CONFIG_PROVE_LOCKING

valid_state() and print_usage_bug*() functions are not used beyond
irq locking correctness checks under CONFIG_TRACE_IRQFLAGS && CONFIG_PROVE_LOCKING.

Sadly the "unused function" warning wouldn't fire because valid_state()
is inline so the unused case has remained unseen until now.

So move them inside the appropriate CONFIG_TRACE_IRQFLAGS && CONFIG_PROVE_LOCKING
section.

Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Will Deacon <will.deacon@....com>
Link: https://lkml.kernel.org/r/20190402160244.32434-2-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 kernel/locking/lockdep.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 34cdcbedda49..9c5819ef4a28 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -2784,6 +2784,12 @@ static void check_chain_key(struct task_struct *curr)
 #endif
 }
 
+static int mark_lock(struct task_struct *curr, struct held_lock *this,
+		     enum lock_usage_bit new_bit);
+
+#if defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING)
+
+
 static void
 print_usage_bug_scenario(struct held_lock *lock)
 {
@@ -2853,10 +2859,6 @@ valid_state(struct task_struct *curr, struct held_lock *this,
 	return 1;
 }
 
-static int mark_lock(struct task_struct *curr, struct held_lock *this,
-		     enum lock_usage_bit new_bit);
-
-#if defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING)
 
 /*
  * print irq inversion bug: