# git rev-parse -q --verify ef78e5ec9214376c5cb989f5da70b02d0c117b66^{commit}
ef78e5ec9214376c5cb989f5da70b02d0c117b66
already have revision, skipping fetch
# git checkout -q -f -B kisskb ef78e5ec9214376c5cb989f5da70b02d0c117b66
# git clean -qxdf
# < git log -1
# commit ef78e5ec9214376c5cb989f5da70b02d0c117b66
# Author: Matias Bjørling <mb@lightnvm.io>
# Date:   Mon Nov 26 11:27:03 2018 -0800
# 
#     ia64: export node_distance function
#     
#     The numa_slit variable used by node_distance is available to a
#     module as long as it is linked at compile-time. However, it is
#     not available to loadable modules. Leading to errors such as:
#     
#       ERROR: "numa_slit" [drivers/nvme/host/nvme-core.ko] undefined!
#     
#     The error above is caused by the nvme multipath code that makes
#     use of node_distance for its path calculation. When the patch was
#     added, the lightnvm subsystem would select nvme and always compile
#     it in, leading to the node_distance call to always succeed.
#     However, when this requirement was removed, nvme could be compiled
#     in as a module, which exposed this bug.
#     
#     This patch extracts node_distance to a function and exports it.
#     Since ACPI is depending on node_distance being a simple lookup to
#     numa_slit, the previous behavior is exposed as slit_distance and its
#     users updated.
#     
#     Fixes: f333444708f82 "nvme: take node locality into account when selecting a path"
#     Fixes: 73569e11032f "lightnvm: remove dependencies on BLK_DEV_NVME and PCI"
#     Signed-off-by: Matias Bjøring <mb@lightnvm.io>
#     Signed-off-by: Tony Luck <tony.luck@intel.com>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-gcc --version
# < git log --format=%s --max-count=1 ef78e5ec9214376c5cb989f5da70b02d0c117b66
# < make -s -j 10 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  defconfig
drivers/staging/mt7621-dts/Kconfig:4:warning: 'BUILTIN_DTB' has wrong type. 'select' only accept arguments of bool and tristate type
# make -s -j 10 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  
<stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
<stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp]
Completed OK
# rm -rf /kisskb/build/linus_xtensa-defconfig_xtensa
# Build took: 0:00:30.422992