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drm: use idr_init_base() to initialize mode_config.object_idr

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idr_init_base(), implemented by commit 6ce711f275 ("idr: Make 1-based
IDRs more efficient"), let us set an arbitrary base other than
idr_init(), which uses base 0.

Since, for this IDR, no ID < 1 is ever requested/allocated, using
idr_init_base(&idr, 1) avoids unnecessary tree walks.

Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20220701185303.284082-6-dakr@redhat.com
This commit is contained in:
Danilo Krummrich 2022-07-01 20:52:58 +02:00 committed by Maxime Ripard
parent 3a6acb7dd6
commit 1765378dfb
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GPG key ID: 8843CAE637A1B7CB
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/drm_mode_config.c
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@ -412,7 +412,7 @@ int drmm_mode_config_init(struct drm_device *dev)
INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
INIT_LIST_HEAD(&dev->mode_config.plane_list);
INIT_LIST_HEAD(&dev->mode_config.privobj_list);
idr_init(&dev->mode_config.object_idr);
idr_init_base(&dev->mode_config.object_idr, 1);
idr_init(&dev->mode_config.tile_idr);
ida_init(&dev->mode_config.connector_ida);
spin_lock_init(&dev->mode_config.connector_list_lock);