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gpu: nvgpu: make deferred clean-up conditional

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This change makes the invocation of the deferred job clean-up
mechanism conditional. For submissions that require job tracking,
deferred clean-up is only required if any of the following
conditions are met:

1) Channel's deterministic flag is not set
2) Rail-gating is enabled
3) Channel WDT is enabled
4) Buffer refcounting is enabled
5) Dependency on Sync Framework

In case deferred clean-up is not needed, we clean-up
a single job tracking resource in the submit path. For
deterministic channels, we do not allow deferred clean-up to
occur and fail any submits that require it.

Bug 1795076

Change-Id: I4021dffe8a71aa58f12db6b58518d3f4021f3313
Signed-off-by: Sachit Kadle <skadle@nvidia.com>
Reviewed-on: http://git-master/r/1220920
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
(cherry picked from commit b09f7589d5ad3c496e7350f1ed583a4fe2db574a)
Reviewed-on: http://git-master/r/1223941
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Sachit Kadle
2016-09-14 11:45:38 -07:00
committed by mobile promotions
parent 55dba9f1a9
commit ab593b9ccd
6 changed files with 119 additions and 26 deletions
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4
include/uapi/linux/nvgpu.h
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@@ -968,6 +968,8 @@ struct nvgpu_alloc_gpfifo_args {
struct nvgpu_alloc_gpfifo_ex_args {
__u32 num_entries;
__u32 num_inflight_jobs;
#define NVGPU_ALLOC_GPFIFO_EX_FLAGS_VPR_ENABLED (1 << 0) /* set owner channel of this gpfifo as a vpr channel */
#define NVGPU_ALLOC_GPFIFO_EX_FLAGS_DETERMINISTIC (1 << 1) /* channel shall exhibit deterministic behavior in the submit path */
__u32 flags;
__u32 reserved[5];
};
@@ -994,8 +996,6 @@ struct nvgpu_fence {
#define NVGPU_SUBMIT_GPFIFO_FLAGS_SUPPRESS_WFI (1 << 4)
/* skip buffer refcounting during submit */
#define NVGPU_SUBMIT_GPFIFO_FLAGS_SKIP_BUFFER_REFCOUNTING (1 << 5)
/* submit should exhibit deterministic latency */
#define NVGPU_SUBMIT_GPFIFO_FLAGS_DETERMINISTIC (1 << 6)
struct nvgpu_submit_gpfifo_args {
__u64 gpfifo;