Makes Dept able to track dependencies by spinlock.
Signed-off-by: Byungchul Park byungchul.park@lge.com --- include/linux/lockdep.h | 18 +++++++++++++++--- include/linux/spinlock.h | 21 +++++++++++++++++++++ include/linux/spinlock_types_raw.h | 3 +++ 3 files changed, 39 insertions(+), 3 deletions(-)
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index aee4660..4fa91d5 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -572,9 +572,21 @@ static inline void print_irqtrace_events(struct task_struct *curr) #define lock_acquire_shared(l, s, t, n, i) lock_acquire(l, s, t, 1, 1, n, i) #define lock_acquire_shared_recursive(l, s, t, n, i) lock_acquire(l, s, t, 2, 1, n, i)
-#define spin_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i) -#define spin_acquire_nest(l, s, t, n, i) lock_acquire_exclusive(l, s, t, n, i) -#define spin_release(l, i) lock_release(l, i) +#define spin_acquire(l, s, t, i) \ +do { \ + lock_acquire_exclusive(l, s, t, NULL, i); \ + dept_spin_lock(&(l)->dmap, s, t, NULL, "spin_unlock", i); \ +} while (0) +#define spin_acquire_nest(l, s, t, n, i) \ +do { \ + lock_acquire_exclusive(l, s, t, n, i); \ + dept_spin_lock(&(l)->dmap, s, t, (n) ? &(n)->dmap : NULL, "spin_unlock", i); \ +} while (0) +#define spin_release(l, i) \ +do { \ + lock_release(l, i); \ + dept_spin_unlock(&(l)->dmap, i); \ +} while (0)
#define rwlock_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i) #define rwlock_acquire_read(l, s, t, i) \ diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index 5c0c517..191fb99 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -95,6 +95,27 @@ # include <linux/spinlock_up.h> #endif
+#ifdef CONFIG_DEPT +#define dept_spin_lock(m, ne, t, n, e_fn, ip) \ +do { \ + if (t) { \ + dept_ecxt_enter(m, 1UL, ip, __func__, e_fn, ne); \ + } else if (n) { \ + dept_ecxt_enter_nokeep(m); \ + } else { \ + dept_wait(m, 1UL, ip, __func__, ne); \ + dept_ecxt_enter(m, 1UL, ip, __func__, e_fn, ne); \ + } \ +} while (0) +#define dept_spin_unlock(m, ip) \ +do { \ + dept_ecxt_exit(m, 1UL, ip); \ +} while (0) +#else +#define dept_spin_lock(m, ne, t, n, e_fn, ip) do { } while (0) +#define dept_spin_unlock(m, ip) do { } while (0) +#endif + #ifdef CONFIG_DEBUG_SPINLOCK extern void __raw_spin_lock_init(raw_spinlock_t *lock, const char *name, struct lock_class_key *key, short inner); diff --git a/include/linux/spinlock_types_raw.h b/include/linux/spinlock_types_raw.h index 91cb36b..1a1da54 100644 --- a/include/linux/spinlock_types_raw.h +++ b/include/linux/spinlock_types_raw.h @@ -31,11 +31,13 @@ .dep_map = { \ .name = #lockname, \ .wait_type_inner = LD_WAIT_SPIN, \ + .dmap = DEPT_MAP_INITIALIZER(lockname) \ } # define SPIN_DEP_MAP_INIT(lockname) \ .dep_map = { \ .name = #lockname, \ .wait_type_inner = LD_WAIT_CONFIG, \ + .dmap = DEPT_MAP_INITIALIZER(lockname) \ }
# define LOCAL_SPIN_DEP_MAP_INIT(lockname) \ @@ -43,6 +45,7 @@ .name = #lockname, \ .wait_type_inner = LD_WAIT_CONFIG, \ .lock_type = LD_LOCK_PERCPU, \ + .dmap = DEPT_MAP_INITIALIZER(lockname) \ } #else # define RAW_SPIN_DEP_MAP_INIT(lockname)