# git rev-parse -q --verify 5eab62c15c387fa3caa03039bd027dc9aab9f637^{commit}
5eab62c15c387fa3caa03039bd027dc9aab9f637
already have revision, skipping fetch
# git checkout -q -f -B kisskb 5eab62c15c387fa3caa03039bd027dc9aab9f637
# git clean -qxdf
# < git log -1
# commit 5eab62c15c387fa3caa03039bd027dc9aab9f637
# Author: Kajol Jain <kjain@linux.ibm.com>
# Date:   Mon Dec 6 14:47:49 2021 +0530
# 
#     powerpc/perf: Add data source encodings for power10 platform
#     
#     The code represent memory/cache level data based on PERF_MEM_LVL_*
#     namespace, which is in the process of deprication in the favour of
#     newer composite PERF_MEM_{LVLNUM_,REMOTE_,SNOOPX_,HOPS_} fields.
#     Add data source encodings to represent cache/memory data based on
#     newer composite PERF_MEM_{LVLNUM_,REMOTE_,SNOOPX_,HOPS_} fields.
#     
#     Add data source encodings to represent data coming from local
#     memory/Remote memory/distant memory and remote/distant cache hits.
#     
#     In order to represent data coming from OpenCAPI cache/memory, we use
#     LVLNUM "PMEM" field which is used to present persistent memory accesses.
#     
#     Result in power10 system with patch changes:
#     
#     localhost:# ./perf mem report --sort="mem,sym,dso" --stdio
#      # Overhead       Samples  Memory access             Symbol                      Shared Object
#      # ........  ............  ........................  ..........................  ................
#      #
#         29.46%          2331  L1 or L1 hit              [.] __random                                     libc-2.28.so
#         23.11%          2121  L1 or L1 hit              [.] producer_populate_cache                      producer_consumer
#         18.56%          1758  L1 or L1 hit              [.] __random_r                                   libc-2.28.so
#         15.64%          1559  L2 or L2 hit              [.] __random                                     libc-2.28.so
#         .....
#         0.09%              5  Remote socket, same board Any cache hit             [.] __random         libc-2.28.so
#         0.07%              4  Remote socket, same board Any cache hit             [.] __random         libc-2.28.so
#         .....
#     
#     Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
#     Reviewed-by: Madhavan Srinivasan <maddy@linux.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20211206091749.87585-5-kjain@linux.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 5eab62c15c387fa3caa03039bd027dc9aab9f637
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig+NO_PERF_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  powernv_defconfig
# Added to kconfig CONFIG_PERF_EVENTS=n
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig+NO_PERF_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig+NO_PERF_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig+NO_PERF_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
<stdin>:1559:2: warning: #warning syscall futex_waitv not implemented [-Wcpp]
Completed OK
# rm -rf /kisskb/build/powerpc-next_powernv_defconfig+NO_PERF_powerpc-gcc5
# Build took: 0:03:18.882604