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| author | Xiaogang Chen <xiaogang.chen@amd.com> | 2023-09-20 11:02:51 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-09-26 17:00:02 -0400 |
| commit | 7bfaa160caed8192f8262c4638f552cad94bcf5a (patch) | |
| tree | b11419d98ad8c54a5770aa286ca3c8b759399e4b /tools/perf/scripts/python/stackcollapse.py | |
| parent | 101b8104307eac734f2dfa4d3511430b0b631c73 (diff) | |
| download | linux-7bfaa160caed8192f8262c4638f552cad94bcf5a.tar.gz linux-7bfaa160caed8192f8262c4638f552cad94bcf5a.zip | |
drm/amdkfd: fix some race conditions in vram buffer alloc/free of svm code
This patch fixes:
1: ref number of prange's svm_bo got decreased by an async call from hmm. When
wait svm_bo of prange got released we shoul also wait prang->svm_bo become NULL,
otherwise prange->svm_bo may be set to null after allocate new vram buffer.
2: During waiting svm_bo of prange got released in a while loop should reschedule
current task to give other tasks oppotunity to run, specially the the workque
task that handles svm_bo ref release, otherwise we may enter to softlock.
Signed-off-by: Xiaogang.Chen <xiaogang.chen@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions