wq_calc_node

函数名称：wq_calc_node_cpumask - calculate a wq_attrs' cpumask for the specified node*@attrs: the wq_attrs of the default pwq of the target workqueue*@node: the target NUMA node*@cpu_going_down: if >= 0, the CPU to consider as offline*@cpumask: outarg, the

函数原型：static bool wq_calc_node_cpumask(const struct workqueue_attrs *attrs, int node, int cpu_going_down, cpumask_t *cpumask)

返回类型：bool

参数：

类型	参数	名称
const struct workqueue_attrs *	attrs
int	node
int	cpu_going_down
cpumask_t *	cpumask

3816

如果非unbound NUMA affinity enabled 或@no_numa: disable NUMA affinity* Unlike other fields, ``no_numa`` isn't a property of a worker_pool. It* only modifies how :c:func:`apply_workqueue_attrs` select pools and thus* doesn't participate in pool hash calculations or equality comparisons.则转到:use_dfl

3820

pumask_and - *dstp = *src1p & *src2p*@dstp: the cpumask result*@src1p: the first input*@src2p: the second input* If *@dstp is empty, returns 0, else returns 1

3821

如果cpu_going_down大于等于0则清空CPU信息

3824

如果pumask_empty - *srcp == 0*@srcp: the cpumask to that all cpus < nr_cpu_ids are clear.则转到:use_dfl

3828

pumask_and - *dstp = *src1p & *src2p*@dstp: the cpumask result*@src1p: the first input*@src2p: the second input* If *@dstp is empty, returns 0, else returns 1

3830

如果pumask_empty - *srcp == 0*@srcp: the cpumask to that all cpus < nr_cpu_ids are clear.则

3831

pr_warn_once("WARNING: workqueue cpumask: online intersect > possible intersect\n")

3833

返回:false

3836

返回:非pumask_equal - *src1p == *src2p*@src1p: the first input*@src2p: the second input

3838

use_dfl :

3839

pumask_copy - *dstp = *srcp*@dstp: the result*@srcp: the input cpumask

3840

返回:false

**调用者**
名称	描述
apply_wqattrs_prepare	allocate the attrs and pwqs for later installation
wq_update_unbound_numa	wq_update_unbound_numa - update NUMA affinity of a wq for CPU hot[un]plug@wq: the target workqueue@cpu: the CPU coming up or going down@online: whether @cpu is coming up or going down This function is to be called from %CPU_DOWN_PREPARE, %CPU_ONLINE

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告