Commit-ID: d16dbd1b8a29bb9f8aca2c2f3bd1a0d2b7621126 Gitweb: https://git.kernel.org/tip/d16dbd1b8a29bb9f8aca2c2f3bd1a0d2b7621126 Author: Yuyang Du <duyuy...@gmail.com> AuthorDate: Mon, 6 May 2019 16:19:22 +0800 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Mon, 3 Jun 2019 11:55:41 +0200
locking/lockdep: Update obsolete struct field description The lock_chain struct definition has outdated comment, update it and add struct member description. Signed-off-by: Yuyang Du <duyuy...@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: bvanass...@acm.org Cc: frede...@kernel.org Cc: ming....@redhat.com Cc: will.dea...@arm.com Link: https://lkml.kernel.org/r/20190506081939.74287-7-duyuy...@gmail.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- include/linux/lockdep.h | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 6e2377e6c1d6..851d44fa5457 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -203,11 +203,17 @@ struct lock_list { struct lock_list *parent; }; -/* - * We record lock dependency chains, so that we can cache them: +/** + * struct lock_chain - lock dependency chain record + * + * @irq_context: the same as irq_context in held_lock below + * @depth: the number of held locks in this chain + * @base: the index in chain_hlocks for this chain + * @entry: the collided lock chains in lock_chain hash list + * @chain_key: the hash key of this lock_chain */ struct lock_chain { - /* see BUILD_BUG_ON()s in lookup_chain_cache() */ + /* see BUILD_BUG_ON()s in add_chain_cache() */ unsigned int irq_context : 2, depth : 6, base : 24;
