FTRACE_KSTACK_NESTING 2790 kernel/trace/trace.c #define FTRACE_KSTACK_ENTRIES (PAGE_SIZE / FTRACE_KSTACK_NESTING) FTRACE_KSTACK_NESTING 2798 kernel/trace/trace.c struct ftrace_stack stacks[FTRACE_KSTACK_NESTING]; FTRACE_KSTACK_NESTING 2835 kernel/trace/trace.c if (WARN_ON_ONCE(stackidx > FTRACE_KSTACK_NESTING))