mirror of https://gitee.com/openkylin/linux.git
d63730192f
Kernel receive queues oversubscribe CPU cores on multi-HFI systems. To prevent this, the kernel receive queues are separated onto different cores, and the SDMA engine interrupts are constrained to a lesser number of cores. hfi1s_on_numa_node*krcvqs is the number of CPU cores that are reserved for kernel receive queues for all HFIs. Each HFI initializes its kernel receive queues to one of the reserved CPU cores. If there ends up being 0 CPU cores leftover for SDMA engines, use the same CPU cores as receive contexts. In addition, general and control contexts are assigned to their own CPU core, however, both types of contexts tend to have low traffic. To save CPU cores, collapse general and control contexts to one CPU core for all HFI units. This change prevents SDMA engine interrupts from wrapping around general contexts. Reviewed-by: Dean Luick <dean.luick@intel.com> Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com> |
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| nes | ||
| ocrdma | ||
| qib | ||
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| Makefile | ||