linux-kernel - [PATCH 7/9] lockdep: __always

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Message-ID: <20200603114052.185201076@infradead.org>
Date:   Wed, 03 Jun 2020 13:40:21 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     tglx@...utronix.de
Cc:     x86@...nel.org, elver@...gle.com, paulmck@...nel.org,
        kasan-dev@...glegroups.com, linux-kernel@...r.kernel.org,
        peterz@...radead.org, will@...nel.org, dvyukov@...gle.com,
        glider@...gle.com, andreyknvl@...gle.com
Subject: [PATCH 7/9] lockdep: __always_inline more for noinstr

vmlinux.o: warning: objtool: debug_locks_off()+0xd: call to __debug_locks_off() leaves .noinstr.text section
vmlinux.o: warning: objtool: match_held_lock()+0x6a: call to look_up_lock_class.isra.0() leaves .noinstr.text section
vmlinux.o: warning: objtool: lock_is_held_type()+0x90: call to lockdep_recursion_finish() leaves .noinstr.text section

Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
---
 include/linux/debug_locks.h |    2 +-
 kernel/locking/lockdep.c    |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

--- a/include/linux/debug_locks.h
+++ b/include/linux/debug_locks.h
@@ -12,7 +12,7 @@ extern int debug_locks __read_mostly;
 extern int debug_locks_silent __read_mostly;
 
 
-static inline int __debug_locks_off(void)
+static __always_inline int __debug_locks_off(void)
 {
 	return xchg(&debug_locks, 0);
 }
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -393,7 +393,7 @@ void lockdep_init_task(struct task_struc
 	task->lockdep_recursion = 0;
 }
 
-static inline void lockdep_recursion_finish(void)
+static __always_inline void lockdep_recursion_finish(void)
 {
 	if (WARN_ON_ONCE(--current->lockdep_recursion))
 		current->lockdep_recursion = 0;
@@ -801,7 +801,7 @@ static int count_matching_names(struct l
 }
 
 /* used from NMI context -- must be lockless */
-static inline struct lock_class *
+static __always_inline struct lock_class *
 look_up_lock_class(const struct lockdep_map *lock, unsigned int subclass)
 {
 	struct lockdep_subclass_key *key;