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authorRoy Novich <royno@nvidia.com>2022-11-03 09:55:38 +0300
committerSaeed Mahameed <saeedm@nvidia.com>2022-11-09 21:30:42 +0300
commit2808b37b59288ad8f1897e3546c2296df3384b65 (patch)
treefa9d5fa8567025c80bc2e593fa81e05a1c9c3498 /tools/perf/scripts/python/stackcollapse.py
parent15f8f168952f54d3c86d734dc764f20844e423ac (diff)
downloadlinux-2808b37b59288ad8f1897e3546c2296df3384b65.tar.xz
net/mlx5: Allow async trigger completion execution on single CPU systems
For a single CPU system, the kernel thread executing mlx5_cmd_flush() never releases the CPU but calls down_trylock(&cmd→sem) in a busy loop. On a single processor system, this leads to a deadlock as the kernel thread which executes mlx5_cmd_invoke() never gets scheduled. Fix this, by adding the cond_resched() call to the loop, allow the command completion kernel thread to execute. Fixes: 8e715cd613a1 ("net/mlx5: Set command entry semaphore up once got index free") Signed-off-by: Alexander Schmidt <alexschm@de.ibm.com> Signed-off-by: Roy Novich <royno@nvidia.com> Reviewed-by: Moshe Shemesh <moshe@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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