From 418fc5338e202c6d0b6b02d49fed736ed28279fb Mon Sep 17 00:00:00 2001 From: Sachit Kadle Date: Tue, 30 Aug 2016 20:23:31 -0700 Subject: gpu: nvgpu: add deterministic submit flag This change adds a new ioctl flag, NVGPU_SUBMIT_GPFIFO_FLAGS_DETERMINISTIC, which indicates that a gpfifo submission must exhibit deterministic behavior within the kernel. For submissions that require job tracking and also set this flag, we require the channel to have previously pre-allocated job tracking resources. Bug 1795076 Change-Id: I0496a2513c6c683fcda161b32db9e7ee6712d45c Signed-off-by: Sachit Kadle Reviewed-on: http://git-master/r/1210527 (cherry picked from commit 0a36a0ce3a6cbe398931993e742fc928f7b2c0aa) Reviewed-on: http://git-master/r/1223935 Reviewed-by: mobile promotions Tested-by: mobile promotions --- include/uapi/linux/nvgpu.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h index 22e357b6..f3c75045 100644 --- a/include/uapi/linux/nvgpu.h +++ b/include/uapi/linux/nvgpu.h @@ -994,6 +994,8 @@ 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; -- cgit v1.2.2