proc add stack_capture_mode

source/module/monitor_proc.c

@@ -9,6 +9,7 @@ const char* proc_dir = "variable_monitor";
 int def_interval_ns = DEFAULT_INTERVAL_NS;
 int dump_reset_sec = DEFAULT_DUMP_RESET_SEC;
 int sample_all = DEFAULT_SAMPLE_ALL;
+int stack_capture_mode = STACK_CAPTURE_AGGREGATE;
 
 static ssize_t read_proc(struct file *file, char __user *buf, size_t count,
                          loff_t *offset, int *var) {
@@ -64,6 +65,15 @@ static ssize_t write_proc_sample_all(struct file *file,
                                      loff_t *offset) {
   return write_proc(file, buf, count, offset, &sample_all);
 }
+static ssize_t read_stack_capture_mode(struct file *file, char __user *buf,
+                                       size_t count, loff_t *offset) {
+  return read_proc(file, buf, count, offset, &stack_capture_mode);
+}
+static ssize_t write_stack_capture_mode(struct file *file,
+                                        const char __user *buf, size_t count,
+                                        loff_t *offset) {
+  return write_proc(file, buf, count, offset, &stack_capture_mode);
+}
 
 static const struct proc_ops proc_def_interval_ns_ops = {
     .proc_read = read_proc_def_interval_ns,
@@ -80,6 +90,11 @@ static const struct proc_ops proc_sample_all_ops = {
     .proc_write = write_proc_sample_all,
 };
 
+static const struct proc_ops stack_capture_mode_ops = {
+    .proc_read = read_stack_capture_mode,
+    .proc_write = write_stack_capture_mode,
+};
+
 int monitor_proc_init(void) {
   struct proc_dir_entry *dir;
 
@@ -92,6 +107,7 @@ int monitor_proc_init(void) {
   proc_create("def_interval_ns", 0666, dir, &proc_def_interval_ns_ops);
   proc_create("dump_reset_sec", 0666, dir, &proc_dump_reset_sec_ops);
   proc_create("sample_all", 0666, dir, &proc_sample_all_ops);
+  proc_create("stack_capture_mode", 0666, dir, &stack_capture_mode_ops);
 
   return 0;
 }

source/module/monitor_proc.h

@@ -4,10 +4,13 @@
 #define DEFAULT_INTERVAL_NS 10000 // 10us
 #define DEFAULT_DUMP_RESET_SEC 10  // 60s
 #define DEFAULT_SAMPLE_ALL 0
+#define STACK_CAPTURE_IMMEDIATE 0
+#define STACK_CAPTURE_AGGREGATE 1
 
 extern int def_interval_ns;
 extern int dump_reset_sec;
 extern int sample_all;
+extern int stack_capture_mode;
 
 int monitor_proc_init(void);
 int monitor_proc_exit(void);