Sebastian Sanchez d63730192f IB/hfi1: Reserve and collapse CPU cores for contexts ... 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>		2016-08-02 15:47:07 -04:00
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core	IB core: Add port_xmit_wait counter	2016-07-12 10:46:24 -04:00
hw	IB/hfi1: Reserve and collapse CPU cores for contexts	2016-08-02 15:47:07 -04:00
sw	IB/rdmavt: Correct qp_priv_alloc() return value test	2016-06-23 10:16:15 -04:00
ulp	IB/srpt: Reduce QP buffer size	2016-06-23 12:04:09 -04:00
Kconfig	IB/hfi1: Move driver out of staging	2016-05-26 11:35:14 -04:00
Makefile	IB/rdmavt: Create module framework and handle driver registration	2016-03-10 20:37:04 -05:00