diff options
| author | Mukul Joshi <mukul.joshi@amd.com> | 2022-05-31 14:39:36 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-06-09 09:45:35 -0400 |
| commit | fe1f05df5919c67c3add49efb55e251a8d78ee4e (patch) | |
| tree | 1653079f117524d35dbe49328a94cbb3e933bd5d /drivers/gpu/drm/amd/amdkfd/kfd_priv.h | |
| parent | 6b22ef25748fb77030bac02e2147f6d738212ac3 (diff) | |
drm/amdkfd: Rework kfd_locked handling
Currently, even if kfd_locked is set, a process is first
created and then removed to work around a race condition
in updating kfd_locked flag. Rework kfd_locked handling to
ensure no processes is created if kfd_locked is set. This
is achieved by updating kfd_locked under kfd_processes_mutex.
With this there is no need for kfd_locked to be an atomic
counter. Instead, it can be a regular integer.
Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_priv.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h index 5cfebcc8b305..400b4dcbdf05 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h @@ -201,6 +201,8 @@ extern int amdgpu_no_queue_eviction_on_vm_fault; /* Enable eviction debug messages */ extern bool debug_evictions; +extern struct mutex kfd_processes_mutex; + enum cache_policy { cache_policy_coherent, cache_policy_noncoherent |