函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\sched\topology.c Create Date:2022-07-27 10:43:07
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：sched_init_numa

函数原型：void sched_init_numa(void)

返回类型：void

参数：无

1554  curr_distance等于node_distance(0, 0)
1556  level等于0
1559  sched_domains_numa_distance等于分配内存并置零
1560  如果非sched_domains_numa_distance则返回
1564  sched_domains_numa_distance[level++]等于curr_distance
1565  sched_domains_numa_levels等于level
1574  next_distance等于curr_distance
1575  以i小于nr_node_ids循环
1576  以j小于nr_node_ids循环
1577  以k小于nr_node_ids循环
1578  distance等于node_distance(i, k)
1580  如果distance大于curr_distance且distance小于next_distance或next_distance恒等于curr_distance的值则next_distance等于distance
1590  如果sched_debug()且node_distance(k, i)不等于distance则sched_numa_warn("Node-distance not symmetric")
1593  如果sched_debug()且i且非find_numa_distance(distance)则sched_numa_warn("Node-0 not representative")
1596  如果next_distance不等于curr_distance则
1600  否则退出
1606  如果非sched_debug()则退出
1626  sched_domains_numa_levels等于0
1628  sched_domains_numa_masks等于分配内存并置零
1629  如果非sched_domains_numa_masks则返回
1636  以i小于level循环
1637  sched_domains_numa_masks[i]等于分配内存并置零
1639  如果非sched_domains_numa_masks[i]则返回
1642  以j小于nr_node_ids循环
1643  mask等于分配内存并置零
1644  如果非mask则返回
1647  sched_domains_numa_masks[i][j]等于mask
1649  for_each_node(k)
1659  以mask循环tl等于分配内存并置零
1663  如果非tl则返回
1669  以mask循环tl[i]等于sched_domain_topology[i]
1675  tl[i++] = (struct sched_domain_topology_level){tl[i++] = sd_numa_mask, tl[i++] = 0, SD_INIT_NAME(NODE)}
1684  以j小于level循环
1685  tl[i] = (struct sched_domain_topology_level){tl[i] = sd_numa_mask, tl[i] = cpu_numa_flags, tl[i] = SDTL_OVERLAP, tl[i] = j, SD_INIT_NAME(NUMA)}
1694  sched_domain_topology等于tl
1696  sched_domains_numa_levels等于level
1697  sched_max_numa_distance等于sched_domains_numa_distance[level - 1]
1699  A system can have three types of NUMA topology:* NUMA_DIRECT: all nodes are directly connected, or not a NUMA system* NUMA_GLUELESS_MESH: some nodes reachable through intermediary nodes* NUMA_BACKPLANE: nodes can reach other nodes through a backplane* The