[glibc] S390: Define SINGLE_THREAD_BY_GLOBAL only on s390x

[Stefan Liebler <stli@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=779aa039fc4151bdc0d79ef2e141604863856a60

commit 779aa039fc4151bdc0d79ef2e141604863856a60
Author: Stefan Liebler <stli@linux.ibm.com>
Date:   Thu Jul 14 13:39:09 2022 +0200

    S390: Define SINGLE_THREAD_BY_GLOBAL only on s390x
    
    Starting with commit e070501d12b47e88c1ff8c313f887976fb578938
    "Replace __libc_multiple_threads with __libc_single_threaded"
    the testcases nptl/tst-cancel-self and
    nptl/tst-cancel-self-cancelstate are failing.
    
    This is fixed by only defining SINGLE_THREAD_BY_GLOBAL on s390x,
    but not on s390.
    
    Starting with commit 09c76a74099826f4c6e1c4c431d7659f78112862
    "Linux: Consolidate {RTLD_}SINGLE_THREAD_P definition",
    SINGLE_THREAD_BY_GLOBAL was defined in
    sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h.
    
    Lateron the commit 9a973da617772eff1f351989f8995f4305a2e63c
    "s390: Consolidate Linux syscall definition" consolidates the sysdep.h files
    from s390-32/s390-64 subdirectories.  Unfortunately the macro is now always
    defined instead of only on s390-64.
    
    As information:
    TLS_MULTIPLE_THREADS_IN_TCB is also only defined for s390.
    See: sysdeps/s390/nptl/tls.h

Diff:
---
 sysdeps/unix/sysv/linux/s390/{ => s390-64}/single-thread.h | 0
 1 file changed, 0 insertions(+), 0 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/s390/single-thread.h b/sysdeps/unix/sysv/linux/s390/s390-64/single-thread.h
similarity index 100%
rename from sysdeps/unix/sysv/linux/s390/single-thread.h
rename to sysdeps/unix/sysv/linux/s390/s390-64/single-thread.h