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| author | Christian Loehle <christian.loehle@arm.com> | 2025-09-01 00:43:57 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-09-15 13:02:24 +0300 |
| commit | 1ebe8f7e782523e62cd1fa8237f7afba5d1dae83 (patch) | |
| tree | d3e7b5721096e58af732d7079a3f68889123e765 /drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.c | |
| parent | e0423541477dfb684fbc6e6b5386054bc650f264 (diff) | |
| download | linux-1ebe8f7e782523e62cd1fa8237f7afba5d1dae83.tar.xz | |
PM: EM: Fix late boot with holes in CPU topology
Commit e3f1164fc9ee ("PM: EM: Support late CPUs booting and capacity
adjustment") added a mechanism to handle CPUs that come up late by
retrying when any of the `cpufreq_cpu_get()` call fails.
However, if there are holes in the CPU topology (offline CPUs, e.g.
nosmt), the first missing CPU causes the loop to break, preventing
subsequent online CPUs from being updated.
Instead of aborting on the first missing CPU policy, loop through all
and retry if any were missing.
Fixes: e3f1164fc9ee ("PM: EM: Support late CPUs booting and capacity adjustment")
Suggested-by: Kenneth Crudup <kenneth.crudup@gmail.com>
Reported-by: Kenneth Crudup <kenneth.crudup@gmail.com>
Link: https://lore.kernel.org/linux-pm/40212796-734c-4140-8a85-854f72b8144d@panix.com/
Cc: 6.9+ <stable@vger.kernel.org> # 6.9+
Signed-off-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/20250831214357.2020076-1-christian.loehle@arm.com
[ rjw: Drop the new pr_debug() message which is not very useful ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.c')
0 files changed, 0 insertions, 0 deletions