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authorAndres Rodriguez <andresx7@gmail.com>2017-06-26 16:17:13 -0400
committerAlex Deucher <alexander.deucher@amd.com>2017-10-09 16:30:24 -0400
commit52c6a62c64fac03a434cdacf6ef671c6a9e9000f (patch)
treeff79a90d966d6eeeccee08fdc93d428c8e4553d5 /include/uapi/drm
parentc23be4ae1d50e8d93f805de7ae3e8ea49a4ad781 (diff)
drm/amdgpu: add interface for editing a foreign process's priority v3
The AMDGPU_SCHED_OP_PROCESS_PRIORITY_OVERRIDE ioctls are used to set the priority of a different process in the current system. When a request is dropped, the process's contexts will be restored to the priority specified at context creation time. A request can be dropped by setting the override priority to AMDGPU_CTX_PRIORITY_UNSET. An fd is used to identify the remote process. This is simpler than passing a pid number, which is vulnerable to re-use, etc. This functionality is limited to DRM_MASTER since abuse of this interface can have a negative impact on the system's performance. v2: removed unused output structure v3: change refcounted interface for a regular set operation Signed-off-by: Andres Rodriguez <andresx7@gmail.com> Acked-by: Christian K├Ânig <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'include/uapi/drm')
-rw-r--r--include/uapi/drm/amdgpu_drm.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 7ea33b57893a..a332de1aeb42 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -53,6 +53,7 @@ extern "C" {
#define DRM_AMDGPU_WAIT_FENCES 0x12
#define DRM_AMDGPU_VM 0x13
#define DRM_AMDGPU_FENCE_TO_HANDLE 0x14
+#define DRM_AMDGPU_SCHED 0x15
#define DRM_IOCTL_AMDGPU_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_CREATE, union drm_amdgpu_gem_create)
#define DRM_IOCTL_AMDGPU_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_MMAP, union drm_amdgpu_gem_mmap)
@@ -69,6 +70,7 @@ extern "C" {
#define DRM_IOCTL_AMDGPU_WAIT_FENCES DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_WAIT_FENCES, union drm_amdgpu_wait_fences)
#define DRM_IOCTL_AMDGPU_VM DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_VM, union drm_amdgpu_vm)
#define DRM_IOCTL_AMDGPU_FENCE_TO_HANDLE DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_FENCE_TO_HANDLE, union drm_amdgpu_fence_to_handle)
+#define DRM_IOCTL_AMDGPU_SCHED DRM_IOW(DRM_COMMAND_BASE + DRM_AMDGPU_SCHED, union drm_amdgpu_sched)
#define AMDGPU_GEM_DOMAIN_CPU 0x1
#define AMDGPU_GEM_DOMAIN_GTT 0x2
@@ -227,6 +229,21 @@ union drm_amdgpu_vm {
struct drm_amdgpu_vm_out out;
};
+/* sched ioctl */
+#define AMDGPU_SCHED_OP_PROCESS_PRIORITY_OVERRIDE 1
+
+struct drm_amdgpu_sched_in {
+ /* AMDGPU_SCHED_OP_* */
+ __u32 op;
+ __u32 fd;
+ __s32 priority;
+ __u32 flags;
+};
+
+union drm_amdgpu_sched {
+ struct drm_amdgpu_sched_in in;
+};
+
/*
* This is not a reliable API and you should expect it to fail for any
* number of reasons and have fallback path that do not use userptr to

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