nv-tegra-mirror/linux-nvgpu
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nvgpu.git synced 2025-12-23 01:50:07 +03:00
Code Issues Packages Projects Releases Wiki Activity

gpu: nvgpu: support binding multiple channels to a debug session

Browse Source 
We currently bind only one channel to a debug session
But some use cases might need multiple channels bound
to same debug session

Add this support by adding a list of channels to debug session.
List structure is implemented as struct dbg_session_channel_data

List node dbg_s_list_node is currently defined in struct
dbg_session_gk20a. But this is inefficient when we need to
add debug session to multiple channels

Hence add new reference structure dbg_session_data to
store dbg_session pointer and list entry

For each NVGPU_DBG_GPU_IOCTL_BIND_CHANNEL call, create
two reference structure dbg_session_channel_data for channel
and dbg_session_data for debug session and bind them together

Define API nvgpu_dbg_gpu_get_session_channel() which will
get first channel in the list of debug session
Use this API wherever we refer to channel bound to debug
session

Remove dbg_sessions define in struct gk20a since it is
not being used anywhere

Add new API NVGPU_DBG_GPU_IOCTL_UNBIND_CHANNEL to support
unbinding of channel from debug sesssion

Bug 200156699

Change-Id: I3bfa6f9cd5b90e7254a75c7e64ac893739776b7f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1120331
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Deepak Nibade
2016-03-29 15:01:25 +05:30
committed by Terje Bergstrom
parent c651adbeaa
commit dfac8ce704
7 changed files with 257 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
include/uapi/linux/nvgpu.h
View File

@@ -496,8 +496,7 @@ struct nvgpu_gpu_get_gpu_time_args {
* Binding/attaching a debugger session to an nvgpu channel
*
* The 'channel_fd' given here is the fd used to allocate the
* gpu channel context. To detach/unbind the debugger session
* use a channel_fd of -1.
* gpu channel context.
*
*/
struct nvgpu_dbg_gpu_bind_channel_args {
@@ -510,6 +509,8 @@ struct nvgpu_dbg_gpu_bind_channel_args {
/*
* Register operations
* All operations are targeted towards first channel
* attached to debug session
*/
/* valid op values */
#define NVGPU_DBG_GPU_REG_OP_READ_32 (0x00000000)
@@ -722,9 +723,23 @@ struct nvgpu_dbg_gpu_write_single_sm_error_state_args {
#define NVGPU_DBG_GPU_IOCTL_WRITE_SINGLE_SM_ERROR_STATE \
_IOW(NVGPU_DBG_GPU_IOCTL_MAGIC, 16, struct nvgpu_dbg_gpu_write_single_sm_error_state_args)
/*
* Unbinding/detaching a debugger session from a nvgpu channel
*
* The 'channel_fd' given here is the fd used to allocate the
* gpu channel context.
*/
struct nvgpu_dbg_gpu_unbind_channel_args {
__u32 channel_fd; /* in */
__u32 _pad0[1];
};
#define NVGPU_DBG_GPU_IOCTL_UNBIND_CHANNEL \
_IOW(NVGPU_DBG_GPU_IOCTL_MAGIC, 17, struct nvgpu_dbg_gpu_unbind_channel_args)
#define NVGPU_DBG_GPU_IOCTL_LAST \
_IOC_NR(NVGPU_DBG_GPU_IOCTL_WRITE_SINGLE_SM_ERROR_STATE)
_IOC_NR(NVGPU_DBG_GPU_IOCTL_UNBIND_CHANNEL)
#define NVGPU_DBG_GPU_IOCTL_MAX_ARG_SIZE \
sizeof(struct nvgpu_dbg_gpu_perfbuf_map_args)