# git rev-parse -q --verify 07a361072378fb3ae116db86244372dbd68f9ea3^{commit}
07a361072378fb3ae116db86244372dbd68f9ea3
already have revision, skipping fetch
# git checkout -q -f -B kisskb 07a361072378fb3ae116db86244372dbd68f9ea3
# git clean -qxdf
# < git log -1
# commit 07a361072378fb3ae116db86244372dbd68f9ea3
# Author: Daniel Henrique Barboza <danielhb413@gmail.com>
# Date:   Tue Mar 23 17:50:56 2021 -0300
# 
#     powerpc/pseries/hotplug-cpu: Show 'last online CPU' error in dlpar_cpu_offline()
#     
#     One of the reasons that dlpar_cpu_offline can fail is when attempting to
#     offline the last online CPU of the kernel. This can be observed in a
#     pseries QEMU guest that has hotplugged CPUs. If the user offlines all
#     other CPUs of the guest, and a hotplugged CPU is now the last online
#     CPU, trying to reclaim it will fail.
#     
#     The current error message in this situation returns rc with -EBUSY and a
#     generic explanation, e.g.:
#     
#       pseries-hotplug-cpu: Failed to offline CPU PowerPC,POWER9, rc: -16
#     
#     EBUSY can be caused by other conditions, such as cpu_hotplug_disable
#     being true. Throwing a more specific error message for this case,
#     instead of just "Failed to offline CPU", makes it clearer that the error
#     is in fact a known error situation instead of other generic/unknown
#     cause.
#     
#     This patch adds a 'last online' check in dlpar_cpu_offline() to catch
#     the 'last online CPU' offline error, eturning a more informative error
#     message:
#     
#       pseries-hotplug-cpu: Unable to remove last online CPU PowerPC,POWER9
#     
#     Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20210323205056.52768-2-danielhb413@gmail.com
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/m68k-linux/bin/m68k-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/m68k-linux/bin/m68k-linux-ld --version
# < git log --format=%s --max-count=1 07a361072378fb3ae116db86244372dbd68f9ea3
# < make -s -j 80 ARCH=m68k O=/kisskb/build/powerpc-next_m68k-defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/m68k-linux/bin/m68k-linux-  defconfig
# < make -s -j 80 ARCH=m68k O=/kisskb/build/powerpc-next_m68k-defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/m68k-linux/bin/m68k-linux-  help
# make -s -j 80 ARCH=m68k O=/kisskb/build/powerpc-next_m68k-defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/m68k-linux/bin/m68k-linux-  olddefconfig
# make -s -j 80 ARCH=m68k O=/kisskb/build/powerpc-next_m68k-defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/m68k-linux/bin/m68k-linux-  
/kisskb/src/arch/m68k/mvme16x/config.c: In function 'mvme16x_hwclk':
/kisskb/src/arch/m68k/mvme16x/config.c:437:2: warning: #warning check me! [-Wcpp]
 #warning check me!
  ^~~~~~~
/kisskb/src/arch/m68k/mvme147/config.c: In function 'mvme147_hwclk':
/kisskb/src/arch/m68k/mvme147/config.c:172:2: warning: #warning check me! [-Wcpp]
 #warning check me!
  ^~~~~~~
In file included from /kisskb/src/drivers/net/ethernet/8390/xsurf100.c:48:
/kisskb/src/drivers/net/ethernet/8390/lib8390.c:995:27: warning: '____alloc_ei_netdev' defined but not used [-Wunused-function]
 static struct net_device *____alloc_ei_netdev(int size)
                           ^~~~~~~~~~~~~~~~~~~
/kisskb/src/drivers/net/ethernet/8390/lib8390.c:957:13: warning: '__ei_set_multicast_list' defined but not used [-Wunused-function]
 static void __ei_set_multicast_list(struct net_device *dev)
             ^~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/drivers/net/ethernet/8390/lib8390.c:857:33: warning: '__ei_get_stats' defined but not used [-Wunused-function]
 static struct net_device_stats *__ei_get_stats(struct net_device *dev)
                                 ^~~~~~~~~~~~~~
/kisskb/src/drivers/net/ethernet/8390/lib8390.c:512:13: warning: '__ei_poll' defined but not used [-Wunused-function]
 static void __ei_poll(struct net_device *dev)
             ^~~~~~~~~
/kisskb/src/drivers/net/ethernet/8390/lib8390.c:303:20: warning: '__ei_start_xmit' defined but not used [-Wunused-function]
 static netdev_tx_t __ei_start_xmit(struct sk_buff *skb,
                    ^~~~~~~~~~~~~~~
/kisskb/src/drivers/net/ethernet/8390/lib8390.c:257:13: warning: '__ei_tx_timeout' defined but not used [-Wunused-function]
 static void __ei_tx_timeout(struct net_device *dev, unsigned int txqueue)
             ^~~~~~~~~~~~~~~
/kisskb/src/drivers/net/ethernet/8390/lib8390.c:233:12: warning: '__ei_close' defined but not used [-Wunused-function]
 static int __ei_close(struct net_device *dev)
            ^~~~~~~~~~
/kisskb/src/drivers/net/ethernet/8390/lib8390.c:204:12: warning: '__ei_open' defined but not used [-Wunused-function]
 static int __ei_open(struct net_device *dev)
            ^~~~~~~~~
Completed OK
# rm -rf /kisskb/build/powerpc-next_m68k-defconfig_m68k-gcc8
# Build took: 0:02:03.910492