Hi Quentin, On Wed, Oct 30, 2024 at 5:01 PM Quentin Schulz <quentin.sch...@cherry.de> wrote:
> Hi Yishai, > > On 10/30/24 3:54 PM, Yishai Jaffe via Lists.Yoctoproject.Org wrote: > > You don't often get email from yishai1999= > gmail....@lists.yoctoproject.org. Learn why this is important< > https://aka.ms/LearnAboutSenderIdentification> > > Thanks Quentin, > > Changing the include to uapi/linux/sched/types.h solved the issue. > > But just so I'm clear on this - Can you explain when I should use uapi > headers vs when to use the regular linux/xxx headers? > > > > You should include the header where the structure is defined. > > The "issue" in Yocto is that the headers aren't coming from your kernel > sources but from a generic linux kernel header recipe, and this is made > on purpose. The generic linux kernel header recipe is at 6.6 in > Scarthgap. Styhead has 6.10. The structure is defined in a different > header in 6.6 and in 6.7+ (including 6.10), so your out-of-tree module > needs the path from 6.6 in order to compile in Scarthgap, but will need > another path from 6.7+ in order to compile in Styhead. > > I think my question wasn't clear enough. I meant to ask about the general usage of uapi header files. When are definitions put in the uapi headers and when are they in the regular linux headers? > You can handle that via #if in your code, if you need the exact same > source code to build on different Yocto/kernel versions. That is the > cross to bear when one develops out of tree kernel modules sadly. > > Cheers, > Quentin >
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