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 10:43:18
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：build_sched_domain

函数原型：static struct sched_domain *build_sched_domain(struct sched_domain_topology_level *tl, const struct cpumask *cpu_map, struct sched_domain_attr *attr, struct sched_domain *child, int dflags, int cpu)

返回类型：struct sched_domain

参数：

类型参数名称
struct sched_domain_topology_level *tl
const struct cpumask *cpu_map
struct sched_domain_attr *attr
struct sched_domain *child
intdflags
intcpu
1856  sd等于sd_init(tl, cpu_map, child, dflags, cpu)
1858  如果child则
1859  level等于level加1
1860  sched_domain_level_max等于两数取大(sched_domain_level_max, level)
1861  parent等于sd
1863  如果非pumask_subset - (*src1p & ~*src2p) == 0*@src1p: the first input*@src2p: the second input* Returns 1 if *@src1p is a subset of *@src2p, else returns 0则
1865  打印错误信息("BUG: arch topology borken\n")
1871  pumask_or - *dstp = *src1p | *src2p*@dstp: the cpumask result*@src1p: the first input*@src2p: the second input
1877  set_domain_attribute(sd, attr)
1879  返回:sd
调用者
名称描述
build_sched_domainsBuild sched domains for a given set of CPUs and attach the sched domains* to the individual CPUs