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vm_perf_overflow_callback have meassage

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zy
2023-12-14 21:46:11 -05:00
parent f08d79edb6
commit 05d78776ad
1 changed files with 30 additions and 29 deletions
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59
source/module/monitor_perf.c
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@@ -44,10 +44,10 @@ void vm_perf_overflow_callback(struct perf_event *event,
struct perf_event_attr pea = {
.type = PERF_TYPE_SOFTWARE,
.size = sizeof(struct perf_event_attr),
.config = PERF_COUNT_SW_DUMMY,
.config = PERF_COUNT_SW_CPU_CLOCK,
.sample_period = 1,
.sample_type = PERF_SAMPLE_CALLCHAIN,
// .disabled = 1,
.disabled = 1,
};
#include <linux/cpumask.h>
@@ -63,38 +63,39 @@ void setup_perf_event_for_task(struct task_struct *tsk) {
pr_info("Perf event already created\n");
return;
}
int cpu;
struct perf_event **events;
for_each_possible_cpu(cpu) {
struct perf_event **event = per_cpu_ptr(events, cpu);
if (cpu_is_offline(cpu)) {
pr_info("cpu %d is offline\n", cpu);
*event = NULL;
continue;
}
*event = perf_event_create_kernel_counter(&pea, cpu, tsk,
vm_perf_overflow_callback, NULL);
// int cpu;
// struct perf_event **events;
// for_each_possible_cpu(cpu) {
// struct perf_event **event = per_cpu_ptr(events, cpu);
// if (cpu_is_offline(cpu)) {
// pr_info("cpu %d is offline\n", cpu);
// *event = NULL;
// continue;
// }
// *event = perf_event_create_kernel_counter(&pea, cpu, tsk,
// vm_perf_overflow_callback, NULL);
// perf_event_create_kernel_counter(&pea, cpu, tsk,
// vm_perf_overflow_callback,
// NULL);
if (IS_ERR(*event)) {
printk(KERN_INFO "create perf event failure\n");
// return -1;
}
// perf_event_enable(*event);
}
// // perf_event_create_kernel_counter(&pea, cpu, tsk,
// // vm_perf_overflow_callback,
// // NULL);
// if (IS_ERR(*event)) {
// printk(KERN_INFO "create perf event failure\n");
// // return -1;
// }
// perf_event_enable(*event);
// }
// pe = perf_event_create_kernel_counter(&pea, tsk->on_cpu, tsk,
// vm_perf_overflow_callback, NULL);
// // pe = perf_event_create_kernel_counter(&pea, -1, tsk,
// // vm_perf_overflow_callback, NULL);
// if (IS_ERR(pe)) {
// pr_info("Error in perf_event_create_kernel_counter\n");
// return;
// }
pe = perf_event_create_kernel_counter(&pea, -1, tsk,
vm_perf_overflow_callback, NULL);
if (IS_ERR(pe)) {
pr_info("Error in perf_event_create_kernel_counter\n");
return;
}
// perf_event_enable(pe); // enable perf event
perf_event_enable(pe); // enable perf event
}
/**