gpu: nvgpu: make deferred clean-up conditional

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>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h
index b3302e6f..5110ee79 100644
--- a/include/uapi/linux/nvgpu.h
+++ b/include/uapi/linux/nvgpu.h
@@ -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;