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| author | Huacai Chen <[email protected]> | 2025-01-26 13:49:59 +0000 |
|---|---|---|
| committer | Huacai Chen <[email protected]> | 2025-01-26 13:49:59 +0000 |
| commit | 04816c1507b46baccd17a4bc948440b3634d5d13 (patch) | |
| tree | ac5d58a45cfd27cd6f7abab990a5a66ace19e484 /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | |
| parent | LoongArch: Fix warnings during S3 suspend (diff) | |
| download | kernel-04816c1507b46baccd17a4bc948440b3634d5d13.tar.gz kernel-04816c1507b46baccd17a4bc948440b3634d5d13.zip | |
LoongArch: Add debugfs entries to switch SFB/TSO state
We need to switch SFB (Store Fill Buffer) and TSO (Total Store Order)
state at runtime to debug memory management and KVM virtualization, so
add two debugfs entries "sfb_state" and "tso_state" under the directory
/sys/kernel/debug/loongarch.
Query SFB:
cat /sys/kernel/debug/loongarch/sfb_state
Enable SFB:
echo 1 > /sys/kernel/debug/loongarch/sfb_state
Disable SFB:
echo 0 > /sys/kernel/debug/loongarch/sfb_state
Query TSO:
cat /sys/kernel/debug/loongarch/tso_state
Switch TSO:
echo [TSO] > /sys/kernel/debug/loongarch/tso_state
Available [TSO] states:
0 (No Load No Store) 1 (All Load No Store) 3 (Same Load No Store)
4 (No Load All Store) 5 (All Load All Store) 7 (Same Load All Store)
Signed-off-by: Huacai Chen <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
0 files changed, 0 insertions, 0 deletions