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charset="utf-8" From: Matthew Wilcox From: Matthew Wilcox Remove syncobj_table_lock by converting the syncobj_idr to an XArray. handle and syncobj is not modified in this change so the indentifier value remains the same. Signed-off-by: Matthew Wilcox Signed-off-by: Sidhartha Kumar --- drivers/gpu/drm/drm_syncobj.c | 64 +++++++++++------------------------ include/drm/drm_file.h | 6 ++-- 2 files changed, 22 insertions(+), 48 deletions(-) diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c index e1b0fa4000cd..091f43cf11ba 100644 --- a/drivers/gpu/drm/drm_syncobj.c +++ b/drivers/gpu/drm/drm_syncobj.c @@ -250,14 +250,12 @@ struct drm_syncobj *drm_syncobj_find(struct drm_file = *file_private, { struct drm_syncobj *syncobj; =20 - spin_lock(&file_private->syncobj_table_lock); - - /* Check if we currently have a reference on the object */ - syncobj =3D idr_find(&file_private->syncobj_idr, handle); + /* Get a reference on the object */ + xa_lock(&file_private->syncobjs); + syncobj =3D xa_load(&file_private->syncobjs, handle); if (syncobj) drm_syncobj_get(syncobj); - - spin_unlock(&file_private->syncobj_table_lock); + xa_unlock(&file_private->syncobjs); =20 return syncobj; } @@ -598,23 +596,16 @@ int drm_syncobj_get_handle(struct drm_file *file_priv= ate, { int ret; =20 - /* take a reference to put in the idr */ + /* take a reference to put in the XArray */ drm_syncobj_get(syncobj); =20 - idr_preload(GFP_KERNEL); - spin_lock(&file_private->syncobj_table_lock); - ret =3D idr_alloc(&file_private->syncobj_idr, syncobj, 1, 0, GFP_NOWAIT); - spin_unlock(&file_private->syncobj_table_lock); + ret =3D xa_alloc(&file_private->syncobjs, handle, syncobj, xa_limit_31b, + GFP_KERNEL); =20 - idr_preload_end(); - - if (ret < 0) { + if (ret < 0) drm_syncobj_put(syncobj); - return ret; - } =20 - *handle =3D ret; - return 0; + return ret; } EXPORT_SYMBOL(drm_syncobj_get_handle); =20 @@ -638,9 +629,7 @@ static int drm_syncobj_destroy(struct drm_file *file_pr= ivate, { struct drm_syncobj *syncobj; =20 - spin_lock(&file_private->syncobj_table_lock); - syncobj =3D idr_remove(&file_private->syncobj_idr, handle); - spin_unlock(&file_private->syncobj_table_lock); + syncobj =3D xa_erase(&file_private->syncobjs, handle); =20 if (!syncobj) return -EINVAL; @@ -726,16 +715,10 @@ static int drm_syncobj_fd_to_handle(struct drm_file *= file_private, syncobj =3D fd_file(f)->private_data; drm_syncobj_get(syncobj); =20 - idr_preload(GFP_KERNEL); - spin_lock(&file_private->syncobj_table_lock); - ret =3D idr_alloc(&file_private->syncobj_idr, syncobj, 1, 0, GFP_NOWAIT); - spin_unlock(&file_private->syncobj_table_lock); - idr_preload_end(); + ret =3D xa_alloc(&file_private->syncobjs, handle, syncobj, xa_limit_31b, + GFP_KERNEL); =20 - if (ret > 0) { - *handle =3D ret; - ret =3D 0; - } else + if (ret < 0) drm_syncobj_put(syncobj); =20 return ret; @@ -814,17 +797,7 @@ static int drm_syncobj_export_sync_file(struct drm_fil= e *file_private, void drm_syncobj_open(struct drm_file *file_private) { - idr_init_base(&file_private->syncobj_idr, 1); - spin_lock_init(&file_private->syncobj_table_lock); -} - -static int -drm_syncobj_release_handle(int id, void *ptr, void *data) -{ - struct drm_syncobj *syncobj =3D ptr; - - drm_syncobj_put(syncobj); - return 0; + xa_init_flags(&file_private->syncobjs, XA_FLAGS_ALLOC1); } =20 /** @@ -838,9 +811,12 @@ drm_syncobj_release_handle(int id, void *ptr, void *da= ta) void drm_syncobj_release(struct drm_file *file_private) { - idr_for_each(&file_private->syncobj_idr, - &drm_syncobj_release_handle, file_private); - idr_destroy(&file_private->syncobj_idr); + struct drm_syncobj *syncobj; + unsigned long index; + + xa_for_each(&file_private->syncobjs, index, syncobj) + drm_syncobj_put(syncobj); + xa_destroy(&file_private->syncobjs); } =20 int diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h index 115763799625..ee5a16338c86 100644 --- a/include/drm/drm_file.h +++ b/include/drm/drm_file.h @@ -309,10 +309,8 @@ struct drm_file { /** @table_lock: Protects @object_idr. */ spinlock_t table_lock; =20 - /** @syncobj_idr: Mapping of sync object handles to object pointers. */ - struct idr syncobj_idr; - /** @syncobj_table_lock: Protects @syncobj_idr. */ - spinlock_t syncobj_table_lock; + /** @syncobjs: Mapping of sync object handles to object pointers. */ + struct xarray syncobjs; =20 /** @filp: Pointer to the core file structure. */ struct file *filp; --=20 2.43.0