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gpu: nvgpu: IOCTL to disable timeouts

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Add IOCTL NVGPU_DBG_GPU_IOCTL_TIMEOUT to support
disabling/re-enabling scheduler timeout from user space

If user space application is closed without re-enabling
the timeouts, kernel will restore the timeouts' state
while releasing the debug session

This is needed for debugging purpose

Bug 1514061

Change-Id: I32efb47ad09d793f3e7fd8f0aaa9720c8bc91272
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/788176
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Deepak Nibade
2015-08-20 19:46:16 +05:30
committed by Terje Bergstrom
parent 4b5c08f4c0
commit 8d279dbac1
4 changed files with 84 additions and 5 deletions
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14
include/uapi/linux/nvgpu.h
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@@ -547,8 +547,20 @@ struct nvgpu_dbg_gpu_pc_sampling_args {
#define NVGPU_DBG_GPU_IOCTL_PC_SAMPLING \
_IOW(NVGPU_DBG_GPU_IOCTL_MAGIC, 9, struct nvgpu_dbg_gpu_pc_sampling_args)
/* Enable/Disable timeouts */
#define NVGPU_DBG_GPU_IOCTL_TIMEOUT_ENABLE 1
#define NVGPU_DBG_GPU_IOCTL_TIMEOUT_DISABLE 0
struct nvgpu_dbg_gpu_timeout_args {
__u32 enable;
__u32 padding;
};
#define NVGPU_DBG_GPU_IOCTL_TIMEOUT \
_IOW(NVGPU_DBG_GPU_IOCTL_MAGIC, 10, struct nvgpu_dbg_gpu_timeout_args)
#define NVGPU_DBG_GPU_IOCTL_LAST \
_IOC_NR(NVGPU_DBG_GPU_IOCTL_PC_SAMPLING)
_IOC_NR(NVGPU_DBG_GPU_IOCTL_TIMEOUT)
#define NVGPU_DBG_GPU_IOCTL_MAX_ARG_SIZE \
sizeof(struct nvgpu_dbg_gpu_perfbuf_map_args)