# git rev-parse -q --verify 94ede2a3e9135764736221c080ac7c0ad993dc2d^{commit}
94ede2a3e9135764736221c080ac7c0ad993dc2d
already have revision, skipping fetch
# git checkout -q -f -B kisskb 94ede2a3e9135764736221c080ac7c0ad993dc2d
# git clean -qxdf
# < git log -1
# commit 94ede2a3e9135764736221c080ac7c0ad993dc2d
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Jul 29 16:34:17 2024 -0700
# 
#     profiling: remove stale percpu flip buffer variables
#     
#     For some reason I didn't see this issue on my arm64 or x86-64 builds,
#     but Stephen Rothwell reports that commit 2accfdb7eff6 ("profiling:
#     attempt to remove per-cpu profile flip buffer") left these static
#     variables around, and the powerpc build is unhappy about them:
#     
#       kernel/profile.c:52:28: warning: 'cpu_profile_flip' defined but not used [-Wunused-variable]
#          52 | static DEFINE_PER_CPU(int, cpu_profile_flip);
#             |                            ^~~~~~~~~~~~~~~~
#       ..
#     
#     So remove these stale left-over remnants too.
#     
#     Fixes: 2accfdb7eff6 ("profiling: attempt to remove per-cpu profile flip buffer")
#     Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 94ede2a3e9135764736221c080ac7c0ad993dc2d
# make -s -j 40 ARCH=powerpc O=/kisskb/build/linus_ppc64_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64_defconfig
# < make -s -j 40 ARCH=powerpc O=/kisskb/build/linus_ppc64_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 40 ARCH=powerpc O=/kisskb/build/linus_ppc64_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 40 ARCH=powerpc O=/kisskb/build/linus_ppc64_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/fs/btrfs/inode.c: In function 'btrfs_lookup_dentry':
/kisskb/src/fs/btrfs/inode.c:5603:9: warning: 'location.objectid' may be used uninitialized in this function [-Wmaybe-uninitialized]
  return btrfs_iget_path(ino, root, NULL);
         ^
/kisskb/src/fs/btrfs/inode.c:5663:19: note: 'location.objectid' was declared here
  struct btrfs_key location;
                   ^
/kisskb/src/fs/btrfs/inode.c:5674:5: warning: 'location.type' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if (location.type == BTRFS_INODE_ITEM_KEY) {
     ^
/kisskb/src/fs/btrfs/inode.c: At top level:
cc1: warning: unrecognized command line option '-Wno-shift-negative-value'
cc1: warning: unrecognized command line option '-Wno-shift-negative-value'
cc1: warning: unrecognized command line option '-Wno-stringop-overflow'
Completed OK
# rm -rf /kisskb/build/linus_ppc64_defconfig_powerpc-gcc5
# Build took: 0:02:05.432840