summaryrefslogtreecommitdiffstats
path: root/include/linux/lockdep.h
diff options
context:
space:
mode:
authorYuyang Du <duyuyang@gmail.com>2019-05-06 16:19:22 +0800
committerIngo Molnar <mingo@kernel.org>2019-06-03 11:55:41 +0200
commitd16dbd1b8a29bb9f8aca2c2f3bd1a0d2b7621126 (patch)
tree17ce6db51ad493d0157743f54dbfa33e66f69518 /include/linux/lockdep.h
parent834494b28024b39d45aea6bcc642b0fe94fe2503 (diff)
downloadlinux-d16dbd1b8a29bb9f8aca2c2f3bd1a0d2b7621126.tar.gz
linux-d16dbd1b8a29bb9f8aca2c2f3bd1a0d2b7621126.tar.bz2
linux-d16dbd1b8a29bb9f8aca2c2f3bd1a0d2b7621126.zip
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The lock_chain struct definition has outdated comment, update it and add struct member description.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 <duyuyang@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: bvanassche@acm.org Cc: frederic@kernel.org Cc: ming.lei@redhat.com Cc: will.deacon@arm.com Link: https://lkml.kernel.org/r/20190506081939.74287-7-duyuyang@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/lockdep.h')
-rw-r--r--include/linux/lockdep.h12
1 files 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;