watch_arg: greater_flag -> above_threshold

source/module/monitor_kernel.c

@@ -67,6 +67,7 @@ static long device_ioctl(struct file *file, unsigned int ioctl_num,
                      "time_ns=%ld, threshold=%lld\n",
            warg.task_id, warg.name, warg.ptr, warg.length_byte, warg.time_ns,
            warg.threshold);
+    warg.time_ns = warg.time_ns == 0 ? 10000 : warg.time_ns; // default 10us
     // start watch variable
     start_watch_variable(warg);
     break;

source/module/monitor_kernel_lib.c

@@ -29,7 +29,7 @@ static unsigned char w_arg2k_w_arg(void *kptr, watch_arg warg,
   k_watch_arg->length_byte = warg.length_byte;
   k_watch_arg->threshold = warg.threshold;
   k_watch_arg->unsigned_flag = warg.unsigned_flag;
-  k_watch_arg->greater_flag = warg.greater_flag;
+  k_watch_arg->above_threshold = warg.above_threshold;
   return 0;
 }
 
@@ -296,7 +296,7 @@ enum hrtimer_restart check_variable_cb(struct hrtimer *timer) {
   // check all watched kernel_watch_arg
   for (i = 0; i < k_watch_timer->sentinel; i++) {
     kwarg = &k_watch_timer->k_watch_args[i];
-    if (read_and_compare(kwarg->kptr, kwarg->length_byte, kwarg->greater_flag,
+    if (read_and_compare(kwarg->kptr, kwarg->length_byte, kwarg->above_threshold,
                          kwarg->unsigned_flag, kwarg->threshold)) {
       k_watch_timer->threshold_buffer[j] = i;
       j++;

source/module/monitor_mem.c

@@ -161,7 +161,7 @@ static int func_indices[2][9] = {{0, 0, 1, 0, 2, 0, 0, 0, 3},
 /// @brief read k_arg->kptr and compare with threshold
 /// @param k_arg
 /// @return result of compare
-unsigned char read_and_compare(void *ptr, int len, unsigned char greater_flag,
+unsigned char read_and_compare(void *ptr, int len, unsigned char above_threshold,
                                unsigned char is_unsigned, long long threshold) {
   unsigned char result = 0;
 
@@ -177,7 +177,7 @@ unsigned char read_and_compare(void *ptr, int len, unsigned char greater_flag,
   // %d \n", k_arg->name, *(int *)ptr,
   //        threshold, result);
 
-  if (greater_flag)
+  if (above_threshold)
     return result;
   else
     return !result;

source/module/monitor_mem.h

@@ -23,5 +23,5 @@ void *convert_user_space_ptr(pid_t pid, unsigned long kaddr);
 void free_page_list(pid_t task_id);
 void free_all_page_list(void);
 
-unsigned char read_and_compare(void *ptr, int len, unsigned char greater_flag,
+unsigned char read_and_compare(void *ptr, int len, unsigned char above_threshold,
                                unsigned char is_unsigned, long long threshold);

source/module/monitor_timer.h

@@ -12,7 +12,7 @@ typedef struct {
   int length_byte;             // byte
   long long threshold;         // threshold value
   unsigned char unsigned_flag; // unsigned flag (true: unsigned, false: signed)
-  unsigned char greater_flag;  // reverse flag (true: >, false: <)
+  unsigned char above_threshold;  // reverse flag (true: >, false: <)
   unsigned long time_ns;       // timer interval (ns)
 } watch_arg;
 
@@ -24,7 +24,7 @@ typedef struct {
   int length_byte;             // byte
   long long threshold;         // threshold value
   unsigned char unsigned_flag; // unsigned flag (true: unsigned, false: signed)
-  unsigned char greater_flag;  // reverse flag (true: >, false: <)
+  unsigned char above_threshold;  // reverse flag (true: >, false: <)
 } kernel_watch_arg;
 
 typedef struct {