pseudo_lock_measure

函数名称：pseudo_lock_measure_cycles - Trigger latency measure to pseudo-locked region* The measurement of latency to access a pseudo-locked region should be* done from a cpu that is associated with that pseudo-locked region

函数原型：static int pseudo_lock_measure_cycles(struct rdtgroup *rdtgrp, int sel)

返回类型：int

参数：

类型	参数	名称
struct rdtgroup *	rdtgrp
int	sel

1153

plr等于plr

1156

ret等于负1

1158

cpus_read_lock()

1159

mutex_lock( & Mutex to protect rdtgroup access. )

1161

如果flags按位与dtgroup.flags 则

1162

ret等于负ENODEV

1163

转到:out

1166

如果非d则

1167

ret等于负ENODEV

1168

转到:out

1171

thread_done等于0

1172

cpu等于Uniprocessor. Assume all masks are "1".

1173

如果非cpu_online(cpu)则

1174

ret等于负ENODEV

1175

转到:out

1178

cpu等于cpu

1180

如果sel恒等于1则thread等于kthread_create_on_node(measure_cycles_lat_fn - Measure cycle latency to read pseudo-locked memory*@_plr: pseudo-lock region to measure* There is no deterministic way to test if a memory region is cached. One* way is to measure how long it takes to read the memory, the speed of, plr, cpu_to_node(cpu), "pseudo_lock_measure/%u", cpu)

1185

否则如果sel恒等于2则thread等于kthread_create_on_node(measure_l2_residency, plr, cpu_to_node(cpu), "pseudo_lock_measure/%u", cpu)

1190

否则如果sel恒等于3则thread等于kthread_create_on_node(measure_l3_residency, plr, cpu_to_node(cpu), "pseudo_lock_measure/%u", cpu)

1195

否则转到:out

1198

如果是错误则

1199

ret等于错误

1200

转到:out

1202

kthread_bind(thread, cpu)

1203

唤醒中断线程

1205

ret等于wait_event_interruptible - sleep until a condition gets true*@wq_head: the waitqueue to wait on*@condition: a C expression for the event to wait for* The process is put to sleep (TASK_INTERRUPTIBLE) until the(lock_thread_wq, thread_done == 1)

1207

如果ret小于0则转到:out

1210

ret等于0

1212

out :

1213

mutex_unlock( & Mutex to protect rdtgroup access. )

1214

cpus_read_unlock()

1215

返回:ret

**调用者**
名称	描述
pseudo_lock_measure_trigger

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

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