From 709b283e003408376689731d8d955ab1cd1d2fdc Mon Sep 17 00:00:00 2001
From: Danilo Krummrich <dakr@redhat.com>
Date: Fri, 1 Jul 2022 20:52:55 +0200
Subject: drm/amdgpu: use idr_init_base() to initialize fpriv->bo_list_handles
Git-commit: c4f306e31632e997c01f3e5ff3298ffc3a127999
Patch-mainline: v6.1-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849
idr_init_base(), implemented by commit 6ce711f27500 ("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/20220701185303.284082-3-dakr@redhat.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 1369c25448dc..77668c3dae5b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -1160,7 +1160,7 @@ int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
}
mutex_init(&fpriv->bo_list_lock);
- idr_init(&fpriv->bo_list_handles);
+ idr_init_base(&fpriv->bo_list_handles, 1);
amdgpu_ctx_mgr_init(&fpriv->ctx_mgr, adev);
--
2.38.1