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| author | Boqun Feng <boqun.feng@gmail.com> | 2020-08-07 15:42:27 +0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-08-26 12:42:05 +0200 |
| commit | 61775ed243433ff0556c4f76905929fe01e92922 (patch) | |
| tree | 9f3e62725003476bb8631f3be91ece35d86702e2 /kernel/locking/lockdep.c | |
| parent | 6971c0f345620aae5e6172207a57b7524603a34e (diff) | |
| download | linux-61775ed243433ff0556c4f76905929fe01e92922.tar.gz linux-61775ed243433ff0556c4f76905929fe01e92922.tar.bz2 linux-61775ed243433ff0556c4f76905929fe01e92922.zip | |
lockdep: Make __bfs(.match) return bool
The "match" parameter of __bfs() is used for checking whether we hit a
match in the search, therefore it should return a boolean value rather
than an integer for better readability.
This patch then changes the return type of the function parameter and the
match functions to bool.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200807074238.1632519-9-boqun.feng@gmail.com
Diffstat (limited to 'kernel/locking/lockdep.c')
| -rw-r--r-- | kernel/locking/lockdep.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 5abc227db0e9..78cd74d77be9 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -1620,7 +1620,7 @@ static inline void bfs_init_rootb(struct lock_list *lock, */ static enum bfs_result __bfs(struct lock_list *source_entry, void *data, - int (*match)(struct lock_list *entry, void *data), + bool (*match)(struct lock_list *entry, void *data), struct lock_list **target_entry, int offset) { @@ -1711,7 +1711,7 @@ exit: static inline enum bfs_result __bfs_forwards(struct lock_list *src_entry, void *data, - int (*match)(struct lock_list *entry, void *data), + bool (*match)(struct lock_list *entry, void *data), struct lock_list **target_entry) { return __bfs(src_entry, data, match, target_entry, @@ -1722,7 +1722,7 @@ __bfs_forwards(struct lock_list *src_entry, static inline enum bfs_result __bfs_backwards(struct lock_list *src_entry, void *data, - int (*match)(struct lock_list *entry, void *data), + bool (*match)(struct lock_list *entry, void *data), struct lock_list **target_entry) { return __bfs(src_entry, data, match, target_entry, @@ -1833,7 +1833,7 @@ print_circular_bug_header(struct lock_list *entry, unsigned int depth, print_circular_bug_entry(entry, depth); } -static inline int class_equal(struct lock_list *entry, void *data) +static inline bool class_equal(struct lock_list *entry, void *data) { return entry->class == data; } @@ -1888,10 +1888,10 @@ static noinline void print_bfs_bug(int ret) WARN(1, "lockdep bfs error:%d\n", ret); } -static int noop_count(struct lock_list *entry, void *data) +static bool noop_count(struct lock_list *entry, void *data) { (*(unsigned long *)data)++; - return 0; + return false; } static unsigned long __lockdep_count_forward_deps(struct lock_list *this) @@ -2032,11 +2032,11 @@ check_redundant(struct held_lock *src, struct held_lock *target) #ifdef CONFIG_TRACE_IRQFLAGS -static inline int usage_accumulate(struct lock_list *entry, void *mask) +static inline bool usage_accumulate(struct lock_list *entry, void *mask) { *(unsigned long *)mask |= entry->class->usage_mask; - return 0; + return false; } /* @@ -2045,9 +2045,9 @@ static inline int usage_accumulate(struct lock_list *entry, void *mask) * without creating any illegal irq-safe -> irq-unsafe lock dependency. */ -static inline int usage_match(struct lock_list *entry, void *mask) +static inline bool usage_match(struct lock_list *entry, void *mask) { - return entry->class->usage_mask & *(unsigned long *)mask; + return !!(entry->class->usage_mask & *(unsigned long *)mask); } /* |