cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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affinity.h (2165B)

      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 */