string_selftest_init needs 636 ms to run

[Paul Menzel]

Dear Geert,




I believe, I only did `make olddefconfig`, and the option is selected.

```
$ grep STRING_SELFTEST .config
CONFIG_STRING_SELFTEST=y
```



> string_selftest_init 636.2ms




Kind regards,

Paul

Sorry for writing you directory, but I saw you created the module *string_selftest* in commit d6b28e09 (lib: add module support to string tests). But booting with `initcall_debug` and looking at the systemd-bootchart output in `/run/log`, doing this lasts 600 ms on my ASRock E350M1 with Linux 4.16-rc5 (probably since the 4.15 cycle). If I didn’t do anything incorrectly, should the module be disable by default?

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