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| author | Xiu Jianfeng <xiujianfeng@huawei.com> | 2021-12-13 21:26:18 +0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-01-25 22:30:27 +0100 |
| commit | e204193b138af347fbbbe026e68cb3385112f387 (patch) | |
| tree | c1b1dd372638dbadfe90dc62cb5e2069d4613d3d /kernel/locking | |
| parent | 54dff232142e255ff644d73de1c8d80122f5ad7b (diff) | |
| download | lwn-e204193b138af347fbbbe026e68cb3385112f387.tar.gz lwn-e204193b138af347fbbbe026e68cb3385112f387.zip | |
lockdep: Use memset_startat() helper in reinit_class()
use memset_startat() helper to simplify the code, there is no functional
change in this patch.
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20211213132618.105737-1-xiujianfeng@huawei.com
Diffstat (limited to 'kernel/locking')
| -rw-r--r-- | kernel/locking/lockdep.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 4a882f83aeb9..89b3df51fd98 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -6011,13 +6011,10 @@ static void zap_class(struct pending_free *pf, struct lock_class *class) static void reinit_class(struct lock_class *class) { - void *const p = class; - const unsigned int offset = offsetof(struct lock_class, key); - WARN_ON_ONCE(!class->lock_entry.next); WARN_ON_ONCE(!list_empty(&class->locks_after)); WARN_ON_ONCE(!list_empty(&class->locks_before)); - memset(p + offset, 0, sizeof(*class) - offset); + memset_startat(class, 0, key); WARN_ON_ONCE(!class->lock_entry.next); WARN_ON_ONCE(!list_empty(&class->locks_after)); WARN_ON_ONCE(!list_empty(&class->locks_before)); |