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Diffstat (limited to 'drivers/infiniband/hw/hfi1/affinity.h')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/affinity.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/affinity.h b/drivers/infiniband/hw/hfi1/affinity.h new file mode 100644 index 000000000..f94ed5d7c --- /dev/null +++ b/drivers/infiniband/hw/hfi1/affinity.h @@ -0,0 +1,129 @@ +/* + * Copyright(c) 2015 - 2020 Intel Corporation. + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * BSD LICENSE + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * - Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#ifndef _HFI1_AFFINITY_H +#define _HFI1_AFFINITY_H + +#include "hfi.h" + +enum irq_type { + IRQ_SDMA, + IRQ_RCVCTXT, + IRQ_NETDEVCTXT, + IRQ_GENERAL, + IRQ_OTHER +}; + +/* Can be used for both memory and cpu */ +enum affinity_flags { + AFF_AUTO, + AFF_NUMA_LOCAL, + AFF_DEV_LOCAL, + AFF_IRQ_LOCAL +}; + +struct cpu_mask_set { + struct cpumask mask; + struct cpumask used; + uint gen; +}; + +struct hfi1_msix_entry; + +/* Initialize non-HT cpu cores mask */ +void init_real_cpu_mask(void); +/* Initialize driver affinity data */ +int hfi1_dev_affinity_init(struct hfi1_devdata *dd); +/* + * Set IRQ affinity to a CPU. The function will determine the + * CPU and set the affinity to it. + */ +int hfi1_get_irq_affinity(struct hfi1_devdata *dd, + struct hfi1_msix_entry *msix); +/* + * Remove the IRQ's CPU affinity. This function also updates + * any internal CPU tracking data + */ +void hfi1_put_irq_affinity(struct hfi1_devdata *dd, + struct hfi1_msix_entry *msix); +/* + * Determine a CPU affinity for a user process, if the process does not + * have an affinity set yet. + */ +int hfi1_get_proc_affinity(int node); +/* Release a CPU used by a user process. */ +void hfi1_put_proc_affinity(int cpu); + +struct hfi1_affinity_node { + int node; + u16 __percpu *comp_vect_affinity; + struct cpu_mask_set def_intr; + struct cpu_mask_set rcv_intr; + struct cpumask general_intr_mask; + struct cpumask comp_vect_mask; + struct list_head list; +}; + +struct hfi1_affinity_node_list { + struct list_head list; + struct cpumask real_cpu_mask; + struct cpu_mask_set proc; + int num_core_siblings; + int num_possible_nodes; + int num_online_nodes; + int num_online_cpus; + struct mutex lock; /* protects affinity nodes */ +}; + +int node_affinity_init(void); +void node_affinity_destroy_all(void); +extern struct hfi1_affinity_node_list node_affinity; +void hfi1_dev_affinity_clean_up(struct hfi1_devdata *dd); +int hfi1_comp_vect_mappings_lookup(struct rvt_dev_info *rdi, int comp_vect); +int hfi1_comp_vectors_set_up(struct hfi1_devdata *dd); +void hfi1_comp_vectors_clean_up(struct hfi1_devdata *dd); + +#endif /* _HFI1_AFFINITY_H */ |