Commit-ID: 6f0397d7e100f3b3978d6ebb6b2dea29ee7c4a95 Gitweb: https://git.kernel.org/tip/6f0397d7e100f3b3978d6ebb6b2dea29ee7c4a95 Author: Byungchul Park <byungchul.park@xxxxxxx> AuthorDate: Wed, 25 Oct 2017 17:55:58 +0900 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Wed, 25 Oct 2017 12:19:00 +0200 locking/lockdep: Provide empty lockdep_map structure for !CONFIG_LOCKDEP After this patch the lockdep_map structure takes no space if lockdep is disabled, reducing the number of #ifdefs in unrelated kernel code. Signed-off-by: Byungchul Park <byungchul.park@xxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: amir73il@xxxxxxxxx Cc: axboe@xxxxxxxxx Cc: darrick.wong@xxxxxxxxxx Cc: david@xxxxxxxxxxxxx Cc: hch@xxxxxxxxxxxxx Cc: idryomov@xxxxxxxxx Cc: johan@xxxxxxxxxx Cc: johannes.berg@xxxxxxxxx Cc: kernel-team@xxxxxxx Cc: linux-block@xxxxxxxxxxxxxxx Cc: linux-fsdevel@xxxxxxxxxxxxxxx Cc: linux-mm@xxxxxxxxx Cc: linux-xfs@xxxxxxxxxxxxxxx Cc: oleg@xxxxxxxxxx Cc: tj@xxxxxxxxxx Link: http://lkml.kernel.org/r/1508921765-15396-3-git-send-email-byungchul.park@xxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- include/linux/lockdep.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index bfa8e0b..b6662d0 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -527,6 +527,11 @@ static inline void lockdep_on(void) */ struct lock_class_key { }; +/* + * The lockdep_map takes no space if lockdep is disabled: + */ +struct lockdep_map { }; + #define lockdep_depth(tsk) (0) #define lockdep_is_held_type(l, r) (1) -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html