# git rev-parse -q --verify ce9f98c0229de93b6b90bcf3deb536f922ad893a^{commit}
ce9f98c0229de93b6b90bcf3deb536f922ad893a
already have revision, skipping fetch
# git checkout -q -f -B kisskb ce9f98c0229de93b6b90bcf3deb536f922ad893a
# git clean -qxdf
# < git log -1
# commit ce9f98c0229de93b6b90bcf3deb536f922ad893a
# Author: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
# Date:   Wed Aug 26 02:40:29 2020 -0400
# 
#     powerpc/perf: Fix reading of MSR[HV/PR] bits in trace-imc
#     
#     IMC trace-mode uses MSR[HV/PR] bits to set the cpumode for the
#     instruction pointer captured in each sample. The bits are fetched from
#     the third double word of the trace record. Reading third double word
#     from IMC trace record should use be64_to_cpu() along with READ_ONCE
#     inorder to fetch correct MSR[HV/PR] bits. Patch addresses this change.
#     
#     Currently we are using PERF_RECORD_MISC_HYPERVISOR as cpumode if MSR
#     HV is 1 and PR is 0 which means the address is from host counter. But
#     using PERF_RECORD_MISC_HYPERVISOR for host counter data will fail to
#     resolve the address -> symbol during "perf report" because perf tools
#     side uses PERF_RECORD_MISC_KERNEL to represent the host counter data.
#     Therefore, fix the trace imc sample data to use
#     PERF_RECORD_MISC_KERNEL as cpumode for host kernel information.
#     
#     Fixes: 77ca3951cc37 ("powerpc/perf: Add kernel support for new MSR[HV PR] bits in trace-imc")
#     Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/1598424029-1662-1-git-send-email-atrajeev@linux.vnet.ibm.com
# < /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 ce9f98c0229de93b6b90bcf3deb536f922ad893a
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  mpc85xx_defconfig
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
In file included from /kisskb/src/include/linux/kernel.h:11:0,
                 from /kisskb/src/include/linux/list.h:9,
                 from /kisskb/src/include/linux/module.h:12,
                 from /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:15:
/kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd':
/kisskb/src/include/linux/err.h:22:49: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO)
                                                 ^
/kisskb/src/include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
 # define unlikely(x) __builtin_expect(!!(x), 0)
                                          ^
/kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: note: in expansion of macro 'IS_ERR_VALUE'
  if (IS_ERR_VALUE(fep->ring_mem_addr))
      ^
cc1: fatal error: opening output file arch/powerpc/boot/dts/fsl/.mpc8540ads.dtb.dts.tmp: No such file or directory
compilation terminated.
make[2]: *** [scripts/Makefile.lib:326: arch/powerpc/boot/dts/fsl/mpc8540ads.dtb] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [arch/powerpc/Makefile:295: zImage] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:185: __sub-make] Error 2
Command 'make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc5
# Build took: 0:02:33.645274