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| author | Tim Chen <[email protected]> | 2023-09-07 17:42:21 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2023-09-13 13:03:06 +0000 |
| commit | 450e749707bc1755f22b505d9cd942d4869dc535 (patch) | |
| tree | c5bba96bc95d14a8679acc9fd1420e595a525e30 /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | sched/fair: Optimize should_we_balance() for large SMT systems (diff) | |
| download | kernel-450e749707bc1755f22b505d9cd942d4869dc535.tar.gz kernel-450e749707bc1755f22b505d9cd942d4869dc535.zip | |
sched/fair: Fix SMT4 group_smt_balance handling
For SMT4, any group with more than 2 tasks will be marked as
group_smt_balance. Retain the behaviour of group_has_spare by marking
the busiest group as the group which has the least number of idle_cpus.
Also, handle rounding effect of adding (ncores_local + ncores_busy) when
the local is fully idle and busy group imbalance is less than 2 tasks.
Local group should try to pull at least 1 task in this case so imbalance
should be set to 2 instead.
Fixes: fee1759e4f04 ("sched/fair: Determine active load balance for SMT sched groups")
Acked-by: Shrikanth Hegde <[email protected]>
Signed-off-by: Tim Chen <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
0 files changed, 0 insertions, 0 deletions