# git rev-parse -q --verify a7aaa2f26bfd932a654706b19859e7adf802bee2^{commit}
a7aaa2f26bfd932a654706b19859e7adf802bee2
already have revision, skipping fetch
# git checkout -q -f -B kisskb a7aaa2f26bfd932a654706b19859e7adf802bee2
# git clean -qxdf
# < git log -1
# commit a7aaa2f26bfd932a654706b19859e7adf802bee2
# Author: Sandipan Das <sandipan@linux.ibm.com>
# Date:   Tue Aug 4 23:01:37 2020 +0530
# 
#     selftests/powerpc: Fix pkey syscall redefinitions
#     
#     On distros using older glibc versions, the pkey tests encounter build
#     failures due to redefinition of the pkey syscall numbers.
#     
#     For compatibility, commit 743f3544fffb added a wrapper for the
#     gettid() syscall and included syscall.h if the version of glibc used
#     is older than 2.30. This leads to different definitions of SYS_pkey_*
#     as the ones in the pkey test header set numeric constants where as the
#     ones from syscall.h reuse __NR_pkey_*. The compiler complains about
#     redefinitions since they are different.
#     
#     This replaces SYS_pkey_* definitions with __NR_pkey_* such that the
#     definitions in both syscall.h and pkeys.h are alike. This way, if
#     syscall.h has to be included for compatibility reasons, builds will
#     still succeed.
#     
#     Fixes: 743f3544fffb ("selftests/powerpc: Add wrapper for gettid")
#     Reported-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
#     Suggested-by: David Laight <david.laight@aculab.com>
#     Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
#     Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/a4956d838bf59b0a71a2553c5ca81131ea8b49b9.1596561758.git.sandipan@linux.ibm.com
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-ld --version
# < git log --format=%s --max-count=1 a7aaa2f26bfd932a654706b19859e7adf802bee2
# < make -s -j 80 ARCH=ia64 O=/kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-  defconfig
# < make -s -j 80 ARCH=ia64 O=/kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-  help
# make -s -j 80 ARCH=ia64 O=/kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-  olddefconfig
# make -s -j 80 ARCH=ia64 O=/kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
In file included from /kisskb/src/arch/ia64/include/uapi/asm/intrinsics.h:22:0,
                 from /kisskb/src/arch/ia64/include/asm/intrinsics.h:11,
                 from /kisskb/src/arch/ia64/include/asm/bitops.h:19,
                 from /kisskb/src/include/linux/bitops.h:29,
                 from /kisskb/src/include/linux/kernel.h:12,
                 from /kisskb/src/include/linux/list.h:9,
                 from /kisskb/src/include/linux/preempt.h:11,
                 from /kisskb/src/include/linux/spinlock.h:51,
                 from /kisskb/src/include/linux/seqlock.h:36,
                 from /kisskb/src/include/linux/time.h:6,
                 from /kisskb/src/fs/nfs/read.c:11:
/kisskb/src/fs/nfs/read.c: In function 'nfs_read_completion':
/kisskb/src/arch/ia64/include/uapi/asm/cmpxchg.h:57:2: warning: value computed is not used [-Wunused-value]
 ((__typeof__(*(ptr))) __xchg((unsigned long) (x), (ptr), sizeof(*(ptr))))
  ^
/kisskb/src/fs/nfs/read.c:196:5: note: in expansion of macro 'xchg'
     xchg(&nfs_req_openctx(req)->error, error);
     ^
/kisskb/src/fs/nfs/read.c: In function 'nfs_readpage':
/kisskb/src/arch/ia64/include/uapi/asm/cmpxchg.h:57:2: warning: value computed is not used [-Wunused-value]
 ((__typeof__(*(ptr))) __xchg((unsigned long) (x), (ptr), sizeof(*(ptr))))
  ^
/kisskb/src/fs/nfs/read.c:355:2: note: in expansion of macro 'xchg'
  xchg(&ctx->error, 0);
  ^
No errors detected in 22248 functions.
Completed OK
# rm -rf /kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9
# Build took: 0:02:23.114418