On Tue, 2021-03-16 at 10:20 +0900, Hajime Tazaki wrote:
>
> > > - if (sigprocmask(SIG_UNBLOCK, &sig_mask, NULL) < 0)
> > > - panic("sigprocmask failed - errno = %d\n", errno);
> > > + if (pthread_sigmask(SIG_UNBLOCK, &sig_mask, NULL) < 0)
> > > + panic("pthread_sigmask failed - errno = %d\n", errno);
> >
> > UML doesn't normally link with libpthread, and LKL doesn't actually
> > appear to require it either (since it has its lkl_thread and all), so
> > this seems wrong?
>
> I think both UML/LKL link with libpthread. See old
> scripts/link-vmlinux.sh, or [01/20] patch.
>
> - ${CC} ${CFLAGS_vmlinux} \
> - ${strip_debug} \
> - -o ${output} \
> - -Wl,-T,${lds} \
> - ${objects} \
> - -lutil -lrt -lpthread
> - rm -f linux
Interesting. You're right, I really didn't expect that, nor did I ever
see that before.
How does this interact with all the clone() calls etc. that UML does?
johannes
