编译出问题了 kernel 我已经修改了

Question

I took Linux kernel version 4.9.30, added a new directory /fsac whose files include headers from other directory (/include/fsac) and that is almost all I changed. Trying to compile I get a lot of errors in /kernel/sched/core.c that look like this:

kernel/sched/core.c:2326:20: error: invalid storage class for function ‘set_schedstats’

kernel/sched/core.c:2342:19: error: invalid storage class for function ‘setup_schedstats’

(...)

Searching on-line I saw that the recommendation was to simply remove the 'static' from the functions. Doing that effectively avoided that errors, but instead I started getting a lot of warnings from objtool like "frame pointer state mismatch" for each of the functions whose static was removed.

I discovered these warnings can be avoided by changing in the configuration file CONFIG_STACK_VALIDATION=n . That worked but even though there is no warning, compilation fails (Error 2).

Hence, I am wondering:

1 - Is the removal of "static" from the offended functions the proper solution?

2 - If so, how do I deal with the objtool warnings? Can those warnings alone constitute a compilation error, or there must be something else?

3 - Do you think I should degrade GCC?

This is the source code of the project: https://github.com/Zildj1an/FSAC_Kernel This is the compilation log w/o removing the statics: https://github.com/Zildj1an/FSAC_Kernel/blob/master/build_err

I will happily provide any other information you might need.

Cheers.

Answer 1

Problem found, I had a function inside a function... Probably was moved copying something else.