# git rev-parse -q --verify c3ea77ab83a1cd36cca6a54206657a4aeb98c49c^{commit}
c3ea77ab83a1cd36cca6a54206657a4aeb98c49c
already have revision, skipping fetch
# git checkout -q -f -B kisskb c3ea77ab83a1cd36cca6a54206657a4aeb98c49c
# git clean -qxdf
# < git log -1
# commit c3ea77ab83a1cd36cca6a54206657a4aeb98c49c
# Author: Joel Stanley <joel@jms.id.au>
# Date:   Wed Sep 2 09:30:11 2020 +0930
# 
#     powerpc: Warn about use of smt_snooze_delay
#     
#     It's not done anything for a long time. Save the percpu variable, and
#     emit a warning to remind users to not expect it to do anything.
#     
#     This uses pr_warn_once instead of pr_warn_ratelimit as testing
#     'ppc64_cpu --smt=off' on a 24 core / 4 SMT system showed the warning
#     to be noisy, as the online/offline loop is slow.
#     
#     Fixes: 3fa8cad82b94 ("powerpc/pseries/cpuidle: smt-snooze-delay cleanup.")
#     Cc: stable@vger.kernel.org # v3.14
#     Signed-off-by: Joel Stanley <joel@jms.id.au>
#     Acked-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20200902000012.3440389-1-joel@jms.id.au
# < /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 c3ea77ab83a1cd36cca6a54206657a4aeb98c49c
# < make -s -j 48 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 48 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 48 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 48 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/timex.h:14,
                 from /kisskb/src/include/linux/timex.h:65,
                 from /kisskb/src/include/linux/time32.h:13,
                 from /kisskb/src/include/linux/time.h:73,
                 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 22424 functions.
Completed OK
# rm -rf /kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9
# Build took: 0:02:17.400689