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drm/amdgpu: Add command to override the context priority.

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Given a master fd we can then override the priority of the context
in another fd.

Using these overrides was recommended by Christian instead of trying
to submit from a master fd, and I am adding a way to override a
single context instead of the entire process so we can only upgrade
a single Vulkan queue and not effectively the entire process.

Reused the flags field as it was checked to be 0 anyways, so nothing
used it. This is source-incompatible (due to the name change), but
ABI compatible.

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Bas Nieuwenhuizen 2019-01-30 02:53:22 +01:00 committed by Alex Deucher
parent 021830d24b
commit b5bb37eddb
2 changed files with 42 additions and 2 deletions
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41
drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
View File

@ -76,6 +76,39 @@ static int amdgpu_sched_process_priority_override(struct amdgpu_device *adev,
return 0; return 0;
} }
static int amdgpu_sched_context_priority_override(struct amdgpu_device *adev,
int fd,
unsigned ctx_id,
enum drm_sched_priority priority)
{
struct file *filp = fget(fd);
struct amdgpu_fpriv *fpriv;
struct amdgpu_ctx *ctx;
int r;
if (!filp)
return -EINVAL;
r = amdgpu_file_to_fpriv(filp, &fpriv);
if (r) {
fput(filp);
return r;
}
ctx = amdgpu_ctx_get(fpriv, ctx_id);
if (!ctx) {
fput(filp);
return -EINVAL;
}
amdgpu_ctx_priority_override(ctx, priority);
amdgpu_ctx_put(ctx);
fput(filp);
return 0;
}
int amdgpu_sched_ioctl(struct drm_device *dev, void *data, int amdgpu_sched_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp) struct drm_file *filp)
{ {
@ -85,7 +118,7 @@ int amdgpu_sched_ioctl(struct drm_device *dev, void *data,
int r; int r;
priority = amdgpu_to_sched_priority(args->in.priority); priority = amdgpu_to_sched_priority(args->in.priority);
if (args->in.flags || priority == DRM_SCHED_PRIORITY_INVALID) if (priority == DRM_SCHED_PRIORITY_INVALID)
return -EINVAL; return -EINVAL;
switch (args->in.op) { switch (args->in.op) {
@ -94,6 +127,12 @@ int amdgpu_sched_ioctl(struct drm_device *dev, void *data,
args->in.fd, args->in.fd,
priority); priority);
break; break;
case AMDGPU_SCHED_OP_CONTEXT_PRIORITY_OVERRIDE:
r = amdgpu_sched_context_priority_override(adev,
args->in.fd,
args->in.ctx_id,
priority);
break;
default: default:
DRM_ERROR("Invalid sched op specified: %d\n", args->in.op); DRM_ERROR("Invalid sched op specified: %d\n", args->in.op);
r = -EINVAL; r = -EINVAL;

3
include/uapi/drm/amdgpu_drm.h
View File

@ -272,13 +272,14 @@ union drm_amdgpu_vm {
/* sched ioctl */ /* sched ioctl */
#define AMDGPU_SCHED_OP_PROCESS_PRIORITY_OVERRIDE 1 #define AMDGPU_SCHED_OP_PROCESS_PRIORITY_OVERRIDE 1
#define AMDGPU_SCHED_OP_CONTEXT_PRIORITY_OVERRIDE 2
struct drm_amdgpu_sched_in { struct drm_amdgpu_sched_in {
/* AMDGPU_SCHED_OP_* */ /* AMDGPU_SCHED_OP_* */
__u32 op; __u32 op;
__u32 fd; __u32 fd;
__s32 priority; __s32 priority;
__u32 flags; __u32 ctx_id;
}; };
union drm_amdgpu_sched { union drm_amdgpu_sched {