attach_counter
unsigned long long attach_counter = 0, id = 0;
&id, &attach_counter), 2, "output format");
ASSERT_GT(attach_counter, 0, "attach counter non-zero");
return attach_counter;
struct attach_counter *total_counter;
__type(value, struct attach_counter);
struct attach_counter init = {.state = state, .pending = pending};
struct attach_counter *total_counter, *parent_counter;