# Re: \[PATCH 23/23\] y2038: allow disabling time32 system calls

- From: Christian Brauner \<hidden\>
- Date: 2019-11-11 12:31:23 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2019/11/5772113
- Thread: https://ratatoskr.run/linux-api/2019/11/166384/t.md

```text
On Fri, Nov 08, 2019 at 10:12:22PM +0100, Arnd Bergmann wrote:
> At the moment, the compilation of the old time32 system calls depends
> purely on the architecture. As systems with new libc based on 64-bit
> time_t are getting deployed, even architectures that previously supported
> these (notably x86-32 and arm32 but also many others) no longer depend on
> them, and removing them from a kernel image results in a smaller kernel
> binary, the same way we can leave out many other optional system calls.
> 
> More importantly, on an embedded system that needs to keep working
> beyond year 2038, any user space program calling these system calls
> is likely a bug, so removing them from the kernel image does provide
> an extra debugging help for finding broken applications.
> 
> I've gone back and forth on hiding this option unless CONFIG_EXPERT
> is set. This version leaves it visible based on the logic that
> eventually it will be turned off indefinitely.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Acked-by: Christian Brauner <redacted>
```