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| author | Liao Chang <[email protected]> | 2023-09-12 06:10:57 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <[email protected]> | 2023-10-06 20:01:26 +0000 |
| commit | 9ef0ad49cc860c0860026c01abea68878c6d72f7 (patch) | |
| tree | 9d12431d3cd6738ecfa220138d752055e51cb344 /drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | |
| parent | cpufreq: userspace: Use fine-grained mutex in userspace governor (diff) | |
| download | kernel-9ef0ad49cc860c0860026c01abea68878c6d72f7.tar.gz kernel-9ef0ad49cc860c0860026c01abea68878c6d72f7.zip | |
cpufreq: userspace: Move is_managed indicator into per-policy structure
The userspace governor uses the 'cpu' field of cpufreq_policy structure
to track if it is allowed to set the speed of the policy.
However, there is a window where the 'cpu' field is equal to the value
of nr_cpus_id when all affected CPUs of policy are offline, which is an
illegal value to get the per-CPU variable.
To avoid this issue, modify the governor to use a per-policy indicator
to track if the policy is managed.
Signed-off-by: Liao Chang <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c')
0 files changed, 0 insertions, 0 deletions