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drm: Add drm_modeset_lock_assert_held()

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Add a small wrapper around lockdep_assert_held() to make
it a bit more conventinet to use with modeset locks.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190708125325.16576-2-ville.syrjala@linux.intel.com
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
This commit is contained in:
Ville Syrjälä
2019-07-08 15:53:07 +03:00
parent 0d352a3a8a
commit 4fb419b216
1 changed files with 9 additions and 0 deletions
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9
include/drm/drm_modeset_lock.h
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@@ -114,6 +114,15 @@ static inline bool drm_modeset_is_locked(struct drm_modeset_lock *lock)
return ww_mutex_is_locked(&lock->mutex); return ww_mutex_is_locked(&lock->mutex);
} }
/**
* drm_modeset_lock_assert_held - equivalent to lockdep_assert_held()
* @lock: lock to check
*/
static inline void drm_modeset_lock_assert_held(struct drm_modeset_lock *lock)
{
lockdep_assert_held(&lock->mutex.base);
}
int drm_modeset_lock(struct drm_modeset_lock *lock, int drm_modeset_lock(struct drm_modeset_lock *lock,
struct drm_modeset_acquire_ctx *ctx); struct drm_modeset_acquire_ctx *ctx);
int __must_check drm_modeset_lock_single_interruptible(struct drm_modeset_lock *lock); int __must_check drm_modeset_lock_single_interruptible(struct drm_modeset_lock *lock);