From f08d79edb6b8f1d9ed486f98ba0695f60818316b Mon Sep 17 00:00:00 2001
From: zy <zhangyang@geedgenetworks.com>
Date: Thu, 14 Dec 2023 21:14:20 -0500
Subject: [PATCH] perf test

---
 source/module/monitor_perf.c | 60 ++++++++++++++++++------------------
 source/ucli/ucli.cc          |  1 +
 2 files changed, 31 insertions(+), 30 deletions(-)

diff --git a/source/module/monitor_perf.c b/source/module/monitor_perf.c
index 76df6f3..b91b930 100644
--- a/source/module/monitor_perf.c
+++ b/source/module/monitor_perf.c
@@ -47,7 +47,7 @@ struct perf_event_attr pea = {
     .config = PERF_COUNT_SW_DUMMY,
     .sample_period = 1,
     .sample_type = PERF_SAMPLE_CALLCHAIN,
-    .disabled = 1,
+    // .disabled = 1,
 };
 
 #include <linux/cpumask.h>
@@ -63,38 +63,38 @@ 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);
-  // }
-
-  // pe = perf_event_create_kernel_counter(&pea, tsk->on_cpu, tsk,
-  //                                         vm_perf_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;
+    // 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_enable(pe); // enable perf 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;
+  // }
+
+  // perf_event_enable(pe); // enable perf event
 }
 
 /**
diff --git a/source/ucli/ucli.cc b/source/ucli/ucli.cc
index fa26448..26ff444 100644
--- a/source/ucli/ucli.cc
+++ b/source/ucli/ucli.cc
@@ -83,6 +83,7 @@ static int task_info_extract(void *buf, unsigned int len, void *) {
     diag_printf_kern_stack(&tsk_info_system->kern_stack);
     printf("#*        0xffffffffffffff %s (UNKNOWN)\n",
            tsk_info_system->task.comm);
+    diag_printf_proc_chains(&tsk_info->proc_chains);
     printf("##\n");
 
     break;