j`ey: oh, apparently i have not:
```
$ cat /proc/config.gz | gunzip -d | grep -i ftrace
CONFIG_GCC_SUPPORTS_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
# CONFIG_FTRACE is not set
```