lockdep: move held_lock to lockdep_types.h

held_lock is embedded in task_struct, and we don't want sched.h pulling
in all of lockdep.h

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Acked-by: Waiman Long <longman@redhat.com>

1 files changed, 0 insertions, 57 deletions

diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index dc2844b071c2..08b0d1d9d78b 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -82,63 +82,6 @@ struct lock_chain {
 	u64				chain_key;
 };
 
-#define MAX_LOCKDEP_KEYS_BITS		13
-#define MAX_LOCKDEP_KEYS		(1UL << MAX_LOCKDEP_KEYS_BITS)
-#define INITIAL_CHAIN_KEY		-1
-
-struct held_lock {
-	/*
-	 * One-way hash of the dependency chain up to this point. We
-	 * hash the hashes step by step as the dependency chain grows.
-	 *
-	 * We use it for dependency-caching and we skip detection
-	 * passes and dependency-updates if there is a cache-hit, so
-	 * it is absolutely critical for 100% coverage of the validator
-	 * to have a unique key value for every unique dependency path
-	 * that can occur in the system, to make a unique hash value
-	 * as likely as possible - hence the 64-bit width.
-	 *
-	 * The task struct holds the current hash value (initialized
-	 * with zero), here we store the previous hash value:
-	 */
-	u64				prev_chain_key;
-	unsigned long			acquire_ip;
-	struct lockdep_map		*instance;
-	struct lockdep_map		*nest_lock;
-#ifdef CONFIG_LOCK_STAT
-	u64 				waittime_stamp;
-	u64				holdtime_stamp;
-#endif
-	/*
-	 * class_idx is zero-indexed; it points to the element in
-	 * lock_classes this held lock instance belongs to. class_idx is in
-	 * the range from 0 to (MAX_LOCKDEP_KEYS-1) inclusive.
-	 */
-	unsigned int			class_idx:MAX_LOCKDEP_KEYS_BITS;
-	/*
-	 * The lock-stack is unified in that the lock chains of interrupt
-	 * contexts nest ontop of process context chains, but we 'separate'
-	 * the hashes by starting with 0 if we cross into an interrupt
-	 * context, and we also keep do not add cross-context lock
-	 * dependencies - the lock usage graph walking covers that area
-	 * anyway, and we'd just unnecessarily increase the number of
-	 * dependencies otherwise. [Note: hardirq and softirq contexts
-	 * are separated from each other too.]
-	 *
-	 * The following field is used to detect when we cross into an
-	 * interrupt context:
-	 */
-	unsigned int irq_context:2; /* bit 0 - soft, bit 1 - hard */
-	unsigned int trylock:1;						/* 16 bits */
-
-	unsigned int read:2;        /* see lock_acquire() comment */
-	unsigned int check:1;       /* see lock_acquire() comment */
-	unsigned int hardirqs_off:1;
-	unsigned int sync:1;
-	unsigned int references:11;					/* 32 bits */
-	unsigned int pin_count;
-};
-
 /*
  * Initialization, self-test and debugging-output methods:
  */