ftrace_set_filter 62 include/linux/ftrace.h void ftrace_set_filter(unsigned char *buf, int len, int reset); ftrace_set_filter 155 kernel/trace/trace_selftest.c ftrace_set_filter(func_name, strlen(func_name), 1); ftrace_set_filter 200 kernel/trace/trace_selftest.c ftrace_set_filter(NULL, 0, 1);