Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2025-01-18 22:34:48 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

drm/amdkfd: bump kfd ioctl minor version for event age availability

Browse Source 
Bump the minor version to declare event age tracking feature is now
available.

In kernel amdgpu driver, kfd_wait_on_events is used to support user
space signal event wait function. For multiple threads waiting on same
event scenery, race condition could occur since some threads after
checking signal condition, before calling kfd_wait_on_events, the
event interrupt could be fired and wake up other thread which are
sleeping on this event. Then those threads could fall into sleep
without waking up again. Adding event age tracking in both kernel and
user mode, will help avoiding this race condition.

Proposed ROCT-Thunk-Interface:
efdbf6cfbc
1820ae0a2d

Proposed ROCR-Runtime:
https://github.com/RadeonOpenCompute/ROCR-Runtime/compare/master...zhums:ROCR-Runtime:new_event_wait_review
e1f5bdb88e
7d26afd141

Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
James Zhu 2023-06-07 13:27:40 -04:00 committed by Alex Deucher
parent 973fddea6f
commit d297eedf83
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/uapi/linux/kfd_ioctl.h
View File

@ -39,9 +39,10 @@
* - 1.11 - Add unified memory for ctx save/restore area
* - 1.12 - Add DMA buf export ioctl
* - 1.13 - Add debugger API
* - 1.14 - Update kfd_event_data
*/
#define KFD_IOCTL_MAJOR_VERSION 1
#define KFD_IOCTL_MINOR_VERSION 13
#define KFD_IOCTL_MINOR_VERSION 14
struct kfd_ioctl_get_version_args {
__u32 major_version; /* from KFD */