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| author | JP Kobryn <[email protected]> | 2025-05-22 01:32:02 +0000 |
|---|---|---|
| committer | Tejun Heo <[email protected]> | 2025-05-22 01:54:58 +0000 |
| commit | 731bdd97466a280d6bdd8eceeb13d9fab6f26cbd (patch) | |
| tree | 31a5ef2384722d64d2c586e1bdbcd0334b318549 /drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c | |
| parent | cgroup, docs: be specific about bandwidth control of rt processes (diff) | |
| download | kernel-731bdd97466a280d6bdd8eceeb13d9fab6f26cbd.tar.gz kernel-731bdd97466a280d6bdd8eceeb13d9fab6f26cbd.zip | |
cgroup: avoid per-cpu allocation of size zero rstat cpu locks
Subsystem rstat locks are dynamically allocated per-cpu. It was discovered
that a panic can occur during this allocation when the lock size is zero.
This is the case on non-smp systems, since arch_spinlock_t is defined as an
empty struct. Prevent this allocation when !CONFIG_SMP by adding a
pre-processor conditional around the affected block.
Signed-off-by: JP Kobryn <[email protected]>
Reported-by: Klara Modin <[email protected]>
Fixes: 748922dcfabd ("cgroup: use subsystem-specific rstat locks to avoid contention")
Signed-off-by: Tejun Heo <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c')
0 files changed, 0 insertions, 0 deletions