[U-Boot] how to read the buildman report

[York Sun]

Simon,

I need some help to understand the report of buildman. Use this example, when I
build all arm and powerpc boards,

$ tools/buildman/buildman -b working_qoriq arm powerpc -s

Summary of 19 commits for 1023 boards (24 threads, 1 job per thread)
01: ls102xa: dcu: Add platform support for DCU on LS1021ATWR board
       arm: +   tricorder_flash vf610twr tricorder
   powerpc: +   taishan dlvision
02: video: dcu: Add DCU driver support
03: video: dcu: Add Sii9022A HDMI Transmitter support
04: arm: ls102xa: Add LETECH support for LS1021AQDS/TWR board
05: serial: lpuart: add 32-bit registers lpuart support
06: net: tsec: Remove tx snooping support from LS1
       arm:    vf610twr
07: arm: ls102xa: Add basic support for LS1021ATWR board
08: arm: ls102xa: Add basic support for LS1021AQDS board
       arm: +   ls1021atwr_nor ls1021atwr_letech
09: driver/ddr/fsl: Add support of overriding chip select write leveling
       arm: +   ls1021aqds_nor ls1021aqds_letech
10: driver/ddr/freescale: Fix DDR3 driver for ARM
11: driver/ddr/freescale: Add support of accumulate ECC
12: ls102xa: esdhc: Add esdhc support for LS102xA
13: ls102xa: etsec: Add etsec support for LS102xA
14: net: mdio: Use mb() to be compatible for both ARM and PowerPC
15: net: mdio: Add private MDIO read/write function
16: net: Merge asm/fsl_enet.h into fsl_mdio.h
17: ls102xa: i2c: Add i2c support for LS102xA
18: arm: ls102xa: Add Freescale LS102xA SoC support
19: patman: Only use git's --no-decorate when available

First, is the build supposed to be top down or bottom up? It looks like buildman
starts to build from the last commit and works it way down. What I don't
understand is the new board. Under patch 08 and 09, I see two boards failed. But
these two boards don't exist until a later commit. Should I use --force-reconfig
switch?

Second, when I see a failed board under a commit, is this commit causing the
failure? It is not the case in my example. I see vf610twr failed under 01, but
the actual failure is caused by commit 05.

York