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locking/lockdep: Make zap_class() remove all matching lock order entries

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Make sure that all lock order entries that refer to a class are removed
from the list_entries[] array when a kernel module is unloaded.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Johannes Berg <johannes@sipsolutions.net>
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: johannes.berg@intel.com
Cc: tj@kernel.org
Link: https://lkml.kernel.org/r/20190214230058.196511-7-bvanassche@acm.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Bart Van Assche
2019-02-14 15:00:41 -08:00
committed by Ingo Molnar
parent 09329d1c20
commit 86cffb80a5
2 changed files with 14 additions and 6 deletions
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1
include/linux/lockdep.h
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@@ -178,6 +178,7 @@ static inline void lockdep_copy_map(struct lockdep_map *to,
struct lock_list {
struct list_head entry;
struct lock_class *class;
struct lock_class *links_to;
struct stack_trace trace;
int distance;