[PATCH linux-next] bpf: fix warning for crash_kexec

[Baoquan He]

On 02/09/24 at 11:18am, Stanislav Fomichev wrote:
> On 02/09, Hari Bathini wrote:
> > With [1], CONFIG_KEXEC & !CONFIG_CRASH_DUMP is supported but that led
> > to the below warning:
> > 
> >   "WARN: resolve_btfids: unresolved symbol crash_kexec"
> > 
> > Fix it by using the appropriate #ifdef.
> 
> Same question here: how did you find this particular kconfig option
> (CONFIG_CRASH_DUMP) to use? Looking at the code, crash_kexec is defined
> in kernel/kexec_core.c and it's gated by CONFIG_KEXEC_CORE. So the
> existing ifdef seems correct?

This patch is based on the latest next tree, I have made some changes to
split the crash code from kexec_core.c. If you check next/master branch,
crash_kexec is not in kernel/keec_core.c any more.