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drm/amdgpu: Add flags for partition mode query

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It's not required to take lock on all cases while querying partition
mode. Querying partition mode during KFD init process doesn't need to
take a lock. Init process after a switch will already be happening under
lock. Control the behaviour by adding flags to xcp_query_partition_mode.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar
2023-01-16 10:55:38 +05:30
committed by Alex Deucher
parent 463e953ea2
commit ded7d99eb5
5 changed files with 15 additions and 7 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
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@@ -170,7 +170,7 @@ out:
return ret;
}
int amdgpu_xcp_query_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr)
int amdgpu_xcp_query_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr, u32 flags)
{
int mode;
@@ -180,7 +180,8 @@ int amdgpu_xcp_query_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr)
if (!xcp_mgr->funcs || !xcp_mgr->funcs->query_partition_mode)
return xcp_mgr->mode;
mutex_lock(&xcp_mgr->xcp_lock);
if (!(flags & AMDGPU_XCP_FL_LOCKED))
mutex_lock(&xcp_mgr->xcp_lock);
mode = xcp_mgr->funcs->query_partition_mode(xcp_mgr);
if (mode != xcp_mgr->mode)
dev_WARN(
@@ -188,7 +189,8 @@ int amdgpu_xcp_query_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr)
"Cached partition mode %d not matching with device mode %d",
xcp_mgr->mode, mode);
mutex_unlock(&xcp_mgr->xcp_lock);
if (!(flags & AMDGPU_XCP_FL_LOCKED))
mutex_unlock(&xcp_mgr->xcp_lock);
return mode;
}