diff options
| author | Andres Rodriguez <andresx7@gmail.com> | 2017-10-20 10:57:59 -0400 |
|---|---|---|
| committer | Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> | 2017-10-20 21:51:02 +0200 |
| commit | 35bc82cee9aab62d556e2ea6dfe29f71ce13dcb3 (patch) | |
| tree | 7f35ba43a4ab4878e222fa2e811031c04a4e1629 | |
| parent | bcae7226a1c36bee22ad747dc12960e52a706cfa (diff) | |
amdgpu: implement context priority for amdgpu_cs_ctx_create2 v3
Add a new context creation function that allows specifying the context
priority.
A high priority context has the potential of starving lower priority
contexts. The current kernel driver implementation allows only apps
that hold CAP_SYS_NICE or DRM_MASTER to acquire a priority above
AMDGPU_CTX_PRIORITY_NORMAL.
v2: corresponding changes for kernel patch v2
v3: Fixed 'make check' symbol error
Signed-off-by: Andres Rodriguez <andresx7@gmail.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
| -rwxr-xr-x | amdgpu/amdgpu-symbol-check | 1 | ||||
| -rw-r--r-- | amdgpu/amdgpu.h | 17 | ||||
| -rw-r--r-- | amdgpu/amdgpu_cs.c | 17 |
3 files changed, 29 insertions, 6 deletions
diff --git a/amdgpu/amdgpu-symbol-check b/amdgpu/amdgpu-symbol-check index d9f89ef3..095c3a08 100755 --- a/amdgpu/amdgpu-symbol-check +++ b/amdgpu/amdgpu-symbol-check @@ -30,6 +30,7 @@ amdgpu_cs_chunk_fence_to_dep amdgpu_cs_create_semaphore amdgpu_cs_create_syncobj amdgpu_cs_ctx_create +amdgpu_cs_ctx_create2 amdgpu_cs_ctx_free amdgpu_cs_destroy_semaphore amdgpu_cs_destroy_syncobj diff --git a/amdgpu/amdgpu.h b/amdgpu/amdgpu.h index 23cde108..ecc975f1 100644 --- a/amdgpu/amdgpu.h +++ b/amdgpu/amdgpu.h @@ -798,8 +798,9 @@ int amdgpu_bo_list_update(amdgpu_bo_list_handle handle, * context will always be executed in order (first come, first serve). * * - * \param dev - \c [in] Device handle. See #amdgpu_device_initialize() - * \param context - \c [out] GPU Context handle + * \param dev - \c [in] Device handle. See #amdgpu_device_initialize() + * \param priority - \c [in] Context creation flags. See AMDGPU_CTX_PRIORITY_* + * \param context - \c [out] GPU Context handle * * \return 0 on success\n * <0 - Negative POSIX Error code @@ -807,6 +808,18 @@ int amdgpu_bo_list_update(amdgpu_bo_list_handle handle, * \sa amdgpu_cs_ctx_free() * */ +int amdgpu_cs_ctx_create2(amdgpu_device_handle dev, + uint32_t priority, + amdgpu_context_handle *context); +/** + * Create GPU execution Context + * + * Refer to amdgpu_cs_ctx_create2 for full documentation. This call + * is missing the priority parameter. + * + * \sa amdgpu_cs_ctx_create2() + * +*/ int amdgpu_cs_ctx_create(amdgpu_device_handle dev, amdgpu_context_handle *context); diff --git a/amdgpu/amdgpu_cs.c b/amdgpu/amdgpu_cs.c index 9577d5c9..b9fc01e7 100644 --- a/amdgpu/amdgpu_cs.c +++ b/amdgpu/amdgpu_cs.c @@ -46,13 +46,14 @@ static int amdgpu_cs_reset_sem(amdgpu_semaphore_handle sem); /** * Create command submission context * - * \param dev - \c [in] amdgpu device handle - * \param context - \c [out] amdgpu context handle + * \param dev - \c [in] Device handle. See #amdgpu_device_initialize() + * \param priority - \c [in] Context creation flags. See AMDGPU_CTX_PRIORITY_* + * \param context - \c [out] GPU Context handle * * \return 0 on success otherwise POSIX Error code */ -int amdgpu_cs_ctx_create(amdgpu_device_handle dev, - amdgpu_context_handle *context) +int amdgpu_cs_ctx_create2(amdgpu_device_handle dev, uint32_t priority, + amdgpu_context_handle *context) { struct amdgpu_context *gpu_context; union drm_amdgpu_ctx args; @@ -75,6 +76,8 @@ int amdgpu_cs_ctx_create(amdgpu_device_handle dev, /* Create the context */ memset(&args, 0, sizeof(args)); args.in.op = AMDGPU_CTX_OP_ALLOC_CTX; + args.in.priority = priority; + r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_CTX, &args, sizeof(args)); if (r) goto error; @@ -94,6 +97,12 @@ error: return r; } +int amdgpu_cs_ctx_create(amdgpu_device_handle dev, + amdgpu_context_handle *context) +{ + return amdgpu_cs_ctx_create2(dev, AMDGPU_CTX_PRIORITY_NORMAL, context); +} + /** * Release command submission context * |