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gpu: nvgpu: Allow enabling PC sampling

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Allow enabling of PC sampling hardware workaround. It is only
applicable to gm20b.

Bug 1517458
Bug 1573150

Change-Id: Iad6a3ae556489fb7ab9628637d291849d2cd98ea
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/710421
This commit is contained in:
Terje Bergstrom
2015-02-20 18:15:04 -08:00
committed by Dan Willemsen
parent 1b6372ec6b
commit 325e0587d9
6 changed files with 73 additions and 1 deletions
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14
include/uapi/linux/nvgpu.h
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@@ -457,8 +457,20 @@ struct nvgpu_dbg_gpu_perfbuf_unmap_args {
#define NVGPU_DBG_GPU_IOCTL_PERFBUF_UNMAP \
_IOWR(NVGPU_DBG_GPU_IOCTL_MAGIC, 8, struct nvgpu_dbg_gpu_perfbuf_unmap_args)
/* Enable/disable PC Sampling */
struct nvgpu_dbg_gpu_pc_sampling_args {
__u32 enable;
__u32 _pad0[1];
};
#define NVGPU_DBG_GPU_IOCTL_PC_SAMPLING_DISABLE 0
#define NVGPU_DBG_GPU_IOCTL_PC_SAMPLING_ENABLE 1
#define NVGPU_DBG_GPU_IOCTL_PC_SAMPLING \
_IOW(NVGPU_DBG_GPU_IOCTL_MAGIC, 9, struct nvgpu_dbg_gpu_pc_sampling_args)
#define NVGPU_DBG_GPU_IOCTL_LAST \
_IOC_NR(NVGPU_DBG_GPU_IOCTL_PERFBUF_UNMAP)
_IOC_NR(NVGPU_DBG_GPU_IOCTL_PC_SAMPLING)
#define NVGPU_DBG_GPU_IOCTL_MAX_ARG_SIZE \
sizeof(struct nvgpu_dbg_gpu_perfbuf_map_args)