LXR linux/drivers/infiniband/hw/hfi1/affinity.h

   1/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
   2/*
   3 * Copyright(c) 2015 - 2020 Intel Corporation.
   4 */
   5
   6#ifndef _HFI1_AFFINITY_H
   7#define _HFI1_AFFINITY_H
   8
   9#include "hfi.h"
  10
  11enum irq_type {
  12        IRQ_SDMA,
  13        IRQ_RCVCTXT,
  14        IRQ_NETDEVCTXT,
  15        IRQ_GENERAL,
  16        IRQ_OTHER
  17};
  18
  19/* Can be used for both memory and cpu */
  20enum affinity_flags {
  21        AFF_AUTO,
  22        AFF_NUMA_LOCAL,
  23        AFF_DEV_LOCAL,
  24        AFF_IRQ_LOCAL
  25};
  26
  27struct cpu_mask_set {
  28        struct cpumask mask;
  29        struct cpumask used;
  30        uint gen;
  31};
  32
  33struct hfi1_msix_entry;
  34
  35/* Initialize non-HT cpu cores mask */
  36void init_real_cpu_mask(void);
  37/* Initialize driver affinity data */
  38int hfi1_dev_affinity_init(struct hfi1_devdata *dd);
  39/*
  40 * Set IRQ affinity to a CPU. The function will determine the
  41 * CPU and set the affinity to it.
  42 */
  43int hfi1_get_irq_affinity(struct hfi1_devdata *dd,
  44                          struct hfi1_msix_entry *msix);
  45/*
  46 * Remove the IRQ's CPU affinity. This function also updates
  47 * any internal CPU tracking data
  48 */
  49void hfi1_put_irq_affinity(struct hfi1_devdata *dd,
  50                           struct hfi1_msix_entry *msix);
  51/*
  52 * Determine a CPU affinity for a user process, if the process does not
  53 * have an affinity set yet.
  54 */
  55int hfi1_get_proc_affinity(int node);
  56/* Release a CPU used by a user process. */
  57void hfi1_put_proc_affinity(int cpu);
  58
  59struct hfi1_affinity_node {
  60        int node;
  61        u16 __percpu *comp_vect_affinity;
  62        struct cpu_mask_set def_intr;
  63        struct cpu_mask_set rcv_intr;
  64        struct cpumask general_intr_mask;
  65        struct cpumask comp_vect_mask;
  66        struct list_head list;
  67};
  68
  69struct hfi1_affinity_node_list {
  70        struct list_head list;
  71        struct cpumask real_cpu_mask;
  72        struct cpu_mask_set proc;
  73        int num_core_siblings;
  74        int num_possible_nodes;
  75        int num_online_nodes;
  76        int num_online_cpus;
  77        struct mutex lock; /* protects affinity nodes */
  78};
  79
  80int node_affinity_init(void);
  81void node_affinity_destroy_all(void);
  82extern struct hfi1_affinity_node_list node_affinity;
  83void hfi1_dev_affinity_clean_up(struct hfi1_devdata *dd);
  84int hfi1_comp_vect_mappings_lookup(struct rvt_dev_info *rdi, int comp_vect);
  85int hfi1_comp_vectors_set_up(struct hfi1_devdata *dd);
  86void hfi1_comp_vectors_clean_up(struct hfi1_devdata *dd);
  87
  88#endif /* _HFI1_AFFINITY_H */
  89