29 | 11 月 | 2018 | FreeSandal

幸而經過一夜折騰，總算大功告成︰

pi@raspberrypi:~/openwrt

不過，一則掛慮所剩空間無幾︰

pi@raspberrypi:~/openwrt  make
 make[1] world
 make[2] toolchain/compile
 make[3] -C toolchain/gdb compile
 make[3] -C toolchain/binutils compile
 make[3] -C toolchain/gcc/initial compile

【demsg】

[ 7002.114849] Workqueue: events_freezable mmc_rescan
[ 7002.114867] [<8079ef70>] (__schedule) from [<8079f5d8>] (schedule+0x50/0xa8)
[ 7002.114875] [<8079f5d8>] (schedule) from [<8061a2d0>] (__mmc_claim_host+0xb8/0x1cc)
[ 7002.114884] [<8061a2d0>] (__mmc_claim_host) from [<8061a414>] (mmc_get_card+0x30/0x34)
[ 7002.114891] [<8061a414>] (mmc_get_card) from [<80623010>] (mmc_sd_detect+0x20/0x74)
[ 7002.114898] [<80623010>] (mmc_sd_detect) from [<8061ccdc>] (mmc_rescan+0x1c8/0x394)
[ 7002.114907] [<8061ccdc>] (mmc_rescan) from [<801379b4>] (process_one_work+0x158/0x454)
[ 7002.114914] [<801379b4>] (process_one_work) from [<80137d14>] (worker_thread+0x64/0x5b8)
[ 7002.114921] [<80137d14>] (worker_thread) from [<8013dd98>] (kthread+0x13c/0x16c)
[ 7002.114930] [<8013dd98>] (kthread) from [<801080ac>] (ret_from_fork+0x14/0x28)

況且依據

Workqueue: kmmcd mmc_rescan crash with Raspbian kernel 4.4.38-v7 #1885

kkpdk commented Oct 10, 2018

I had the idea to test this on various models, to see if multicore or wifi was the trigger: No, it is Pi3/Pi3B+.

Pi 0W (4pcs): 48 hours runtime, no failures
I tested 4 cards (Sandisk A1, SanDisk industrial, NetList SLC, Panasonic Industrial), one in each 0W, with wifi enabled and talking, for a total of 192 card-hours.

Pi 2 original (1pc): 48 hours runtime, no failures
If this is a locking bug, maybe it would fail on the Pi2. This is the first Pi2, not using the Pi3 SoC.

Pi 3 original (1pc): 8 hours runtime, 6 failures, throttled=0x0
This is powered from a really nice and clean 5V 5A supply, with short fat wires, and a large heatsink.

Pi 3B+ (3pcs): Highly variable. The best has 6 days of runtime and only a single failure, the worst fails once per hour on average.

Various things tried:
330uF extra on 3.3V. 5V supplied to header. Disabling wifi. Iperf3 on wifi while copying. No difference.

所言，實有隱憂☻

故耳決定測之以 USD HDD 『開機系統』呦。

pi@raspberrypi:~  make -j 4
 make[1] world
 make[2] package/cleanup
 make[2] target/compile
 make[3] -C target/linux compile
 make[2] diffconfig
 make[2] package/compile
 make[3] -C package/libs/libjson-c host-compile
 make[3] -C package/libs/ncurses host-compile
 make[3] -C package/libs/toolchain compile
 make[3] -C package/system/fwtool host-compile
 make[3] -C package/system/usign host-compile
 make[3] -C package/utils/e2fsprogs host-compile
 make[3] -C package/libs/libubox host-compile
 make[3] -C package/libs/libnl-tiny compile
 make[3] -C package/libs/libjson-c compile
 make[3] -C package/utils/lua compile
 make[3] -C package/firmware/linux-firmware compile
 make[3] -C package/firmware/prism54-firmware compile
 make[3] -C package/libs/zlib compile
 make[3] -C package/system/fwtool compile
 make[3] -C package/system/ucert host-compile
 make[3] -C package/system/openwrt-keyring compile
 make[3] -C package/firmware/brcmfmac-board-rpi compile
 make[3] -C package/firmware/wireless-regdb compile
 make[3] -C package/kernel/brcm2708-gpu-fw compile
 make[3] -C package/firmware/b43legacy-firmware compile
 make[3] -C package/libs/openssl compile
 make[3] -C package/libs/gettext compile
 make[3] -C package/libs/libiconv compile
 make[3] -C package/libs/libtool compile
 make[3] -C package/network/utils/iw compile
 make[3] -C package/libs/mbedtls compile
 make[3] -C package/network/services/dropbear compile
 make[3] -C package/libs/libpcap compile
 make[3] -C package/network/utils/linux-atm compile
 make[3] -C package/network/utils/resolveip compile
 make[3] -C package/utils/busybox compile
 make[3] -C package/system/opkg host-compile
 make[3] -C package/libs/libubox compile
 make[3] -C package/libs/ncurses compile
 make[3] -C package/libs/wolfssl compile
 make[3] -C package/utils/util-linux compile
 make[3] -C package/utils/f2fs-tools compile
 make[3] -C package/utils/e2fsprogs compile
 make[3] -C package/system/ubus compile
 make[3] -C package/system/uci compile
 make[3] -C package/utils/jsonfilter compile
 make[3] -C package/system/usign compile
 make[3] -C package/network/services/hostapd compile
 make[3] -C package/libs/ustream-ssl compile
 make[3] -C package/network/ipv6/odhcp6c compile
 make[3] -C package/network/services/dnsmasq compile
 make[3] -C package/network/services/odhcpd compile
 make[3] -C package/network/utils/iwinfo compile
 make[3] -C package/system/mtd compile
 make[3] -C package/network/config/netifd compile
 make[3] -C package/kernel/linux compile
 make[3] -C package/system/ubox compile
 make[3] -C package/libs/uclient compile
 make[3] -C package/system/procd compile
 make[3] -C package/system/opkg compile
 make[3] -C package/system/fstools compile
 make[3] -C package/kernel/mac80211 compile
 make[3] -C package/network/services/ppp compile
 make[3] -C package/network/utils/iptables compile
 make[3] -C package/base-files compile
 make[3] -C package/network/config/firewall compile
 make[2] package/install
 make[2] target/install
 make[3] -C target/linux install
 make[2] package/index
 make[2] checksum
pi@raspberrypi:~/openwrt  ls
bin          dl                  key-build.pub           package      target
BSDmakefile  feeds               key-build.ucert         README       tmp
build_dir    feeds.conf.default  key-build.ucert.revoke  rules.mk     toolchain
config       include             LICENSE                 scripts      tools
Config.in    key-build           Makefile                staging_dir

回想其與昔日的

Build system – Features

Makes it easy to port software
Uses kconfig (Linux Kernel menuconfig) for configuration of features
Provides integrated cross-compiler toolchain (gcc, ld, …)
Provides abstraction for autotools (automake, autoconf), cmake, scons
Handles standard download, patch, configure, compile and packaging workflow
Provides a number of common fixups for badly behaving packages

Build system – Make Targets

Offers a number of high level make targets for standard package workflows
Targets always in the format “component/name/action”, e.g. “toolchain/gdb/compile” or “package/mtd/install”
Prepare a package source tree: package/foo/prepare
Compile a package: package/foo/compile
Clean a package: package/foo/clean

Build system – Build sequence

tools – automake, autoconf, sed, cmake
toolchain/binutils – as, ld, …
toolchain/gcc – gcc, g++, cpp, …
target/linux – kernel modules
package – core and feed packages
target/linux – kernel image
target/linux/image – firmware image file generation

Patch management

Many packages will not work as-is and need patches to work on the target or to even compile
the build system integrates quilt for easy patch management
Turn package patches into quilt series: make package/foo/prepare QUILT=1
Update patches from modified series: make package/foo/update
Automatically rebase patches after an update: make package/foo/refresh

Packaging considerations

Main objective is small memory and size footprint
Features that make no sense on embedded systems are disabled through configure or patched out
Packages must be compilable regardless of the host system, they should be self contained
Shipped “configure” scripts are often faulty or unusable in a cross-compile setting, autoreconf or patching is often needed
Build variants and kconfig includes allow for configurable compile-time settings
There is no standard way for porting software, in many cases it “just works” but often the package build process needs tweaks

Documentation

History

是否有所差異也◎

FreeSandal

每日彙整: 2018-11-29

OpenWrt 的世界︰樹莓派 3B 【路由器】移星轉斗《五》編譯二