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drm/amdgpu: use idr_init_base() to initialize mgr->ctx_handles

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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, 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/20220701185303.284082-2-dakr@redhat.com
This commit is contained in:
Danilo Krummrich
2022-07-01 20:52:54 +02:00
committed by Maxime Ripard
parent 5727dcfd84
commit 2ddd1e6ccb
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
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@@ -842,7 +842,7 @@ void amdgpu_ctx_mgr_init(struct amdgpu_ctx_mgr *mgr,
mgr->adev = adev;
mutex_init(&mgr->lock);
idr_init(&mgr->ctx_handles);
idr_init_base(&mgr->ctx_handles, 1);
for (i = 0; i < AMDGPU_HW_IP_NUM; ++i)
atomic64_set(&mgr->time_spend[i], 0);