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

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The last cleanup patch triggered another issue, as now another function
should be moved into the same section:

 kernel/locking/lockdep.c:3580:12: error: 'mark_lock' defined but not used [-Werror=unused-function]
  static int mark_lock(struct task_struct *curr, struct held_lock *this,

Move mark_lock() into the same #ifdef section as its only caller, and
remove the now-unused mark_lock_irq() stub helper.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yuyang Du <duyuyang@gmail.com>
Fixes: 0d2cc3b345 ("locking/lockdep: Move valid_state() inside CONFIG_TRACE_IRQFLAGS && CONFIG_PROVE_LOCKING")
Link: https://lkml.kernel.org/r/20190617124718.1232976-1-arnd@arndb.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Arnd Bergmann 2019-06-17 14:47:05 +02:00 committed by Ingo Molnar
parent bf10c97adb
commit 886532aee3
1 changed files with 34 additions and 39 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

73
kernel/locking/lockdep.c
View file

@ -437,13 +437,6 @@ static int verbose(struct lock_class *class)
return 0;
}
/*
* Stack-trace: tightly packed array of stack backtrace
* addresses. Protected by the graph_lock.
*/
unsigned long nr_stack_trace_entries;
static unsigned long stack_trace[MAX_STACK_TRACE_ENTRIES];
static void print_lockdep_off(const char *bug_msg)
{
printk(KERN_DEBUG "%s\n", bug_msg);
@ -453,6 +446,15 @@ static void print_lockdep_off(const char *bug_msg)
#endif
}
unsigned long nr_stack_trace_entries;
#if defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING)
/*
* Stack-trace: tightly packed array of stack backtrace
* addresses. Protected by the graph_lock.
*/
static unsigned long stack_trace[MAX_STACK_TRACE_ENTRIES];
static int save_trace(struct lock_trace *trace)
{
unsigned long *entries = stack_trace + nr_stack_trace_entries;
@ -475,6 +477,7 @@ static int save_trace(struct lock_trace *trace)
return 1;
}
#endif
unsigned int nr_hardirq_chains;
unsigned int nr_softirq_chains;
@ -488,6 +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)
/*
* Locking printouts:
*/
@ -505,6 +509,7 @@ static const char *usage_str[] =
#undef LOCKDEP_STATE
[LOCK_USED] = "INITIAL USE",
};
#endif
const char * __get_key_name(struct lockdep_subclass_key *key, char *str)
{
@ -2964,12 +2969,10 @@ static void check_chain_key(struct task_struct *curr)
#endif
}
#if defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING)
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)
{
struct lock_class *class = hlock_class(lock);
@ -3545,35 +3548,6 @@ static int separate_irq_context(struct task_struct *curr,
return 0;
}
#else /* defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING) */
static inline
int mark_lock_irq(struct task_struct *curr, struct held_lock *this,
enum lock_usage_bit new_bit)
{
WARN_ON(1); /* Impossible innit? when we don't have TRACE_IRQFLAG */
return 1;
}
static inline int
mark_usage(struct task_struct *curr, struct held_lock *hlock, int check)
{
return 1;
}
static inline unsigned int task_irq_context(struct task_struct *task)
{
return 0;
}
static inline int separate_irq_context(struct task_struct *curr,
struct held_lock *hlock)
{
return 0;
}
#endif /* defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING) */
/*
* Mark a lock with a usage bit, and validate the state transition:
*/
@ -3634,6 +3608,27 @@ static int mark_lock(struct task_struct *curr, struct held_lock *this,
return ret;
}
#else /* defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING) */
static inline int
mark_usage(struct task_struct *curr, struct held_lock *hlock, int check)
{
return 1;
}
static inline unsigned int task_irq_context(struct task_struct *task)
{
return 0;
}
static inline int separate_irq_context(struct task_struct *curr,
struct held_lock *hlock)
{
return 0;
}
#endif /* defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_PROVE_LOCKING) */
/*
* Initialize a lock instance's lock-class mapping info:
*/