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gpu: nvgpu: IOCTL to set TSG timeslice

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Add new IOCTL NVGPU_IOCTL_TSG_SET_PRIORITY to allow
setting timeslice for entire TSG

Return error from channel specific IOCTL_CHANNEL_SET_PRIORITY
if the channel is part of TSG

Separate out API gk20a_channel_get_timescale_from_timeslice()
to get timeslice_timeout and scale from timeslice period

Use this API to get timeslice_timeout and scale for TSG and
store it in tsg_gk20a structure

Then trigger runlist update so that new timeslice values
will be re-written to runlist for TSG

Bug 200146615

Change-Id: I555467d034f81b372b31372f0835d72b1c159508
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/824206
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Deepak Nibade
2015-10-28 16:13:14 +05:30
committed by Terje Bergstrom
parent 8d279dbac1
commit 9592a4e6fc
6 changed files with 115 additions and 29 deletions
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6
include/uapi/linux/nvgpu.h
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@@ -377,11 +377,13 @@ struct nvgpu_gpu_vsms_mapping {
_IO(NVGPU_TSG_IOCTL_MAGIC, 4)
#define NVGPU_IOCTL_TSG_PREEMPT \
_IO(NVGPU_TSG_IOCTL_MAGIC, 5)
#define NVGPU_IOCTL_TSG_SET_PRIORITY \
_IOW(NVGPU_TSG_IOCTL_MAGIC, 6, struct nvgpu_set_priority_args)
#define NVGPU_TSG_IOCTL_MAX_ARG_SIZE \
sizeof(int)
sizeof(struct nvgpu_set_priority_args)
#define NVGPU_TSG_IOCTL_LAST \
_IOC_NR(NVGPU_IOCTL_TSG_PREEMPT)
_IOC_NR(NVGPU_IOCTL_TSG_SET_PRIORITY)
/*
* /dev/nvhost-dbg-gpu device
*