Question# ./killsnoop Tracing kill()s. Ctrl-C to end. ./killsnoop: line 151: events/syscalls/sys_enter_kill/enable: No such file or directory ERROR: enabling kill() entry tracepoint Exiting. AnswerCONFIG_FTRACE_SYSCALLS=y

Question/usr/bin/ld: scripts/dtc/dtc-parser.tab.o:(.bss+0x10): multiple definition of `yylloc'; scripts/dtc/dtc-lexer.lex.o:(.bss+0x0): first defined here Answerdiff --git a/scripts/dtc/dtc-lexer.lex.c_shipped b/scripts/dtc/dtc-lexer.lex.c_shipped index 011bb96..79952cd 100644 --- a/scripts/dtc/dtc-lexer.lex.c_shipped +++ b/scripts/dtc/dtc-lexer.lex.c_shipped @@ -631,7 +631,6 @@ char *yytext; #include "srcpos.h" #include "dtc-parser.tab.h" -YYLTYPE yylloc; extern bool treesource_error;

Questionstap -g -a mips -p4 -B CROSS_COMPILE=mipsel-linux- \ -m hello -e 'probe begin {print("hello! \n") exit()}' Checking "/media/baifudong/grecale/ingenic/t40/buildroot/output/x70/build/linux-HEAD/Module.symvers" failed with error: No such file or directory Ensure kernel development headers & makefiles are installed AnswerCONFIG_MODULES=y

Question~ # iotop Error opening terminal: xterm-256color. AnswerA1 (for PC): export TERM=xterm-colorA2 (for Embedded Linux): scp -r mipsel-buildroot-linux-gnu/sysroot/usr/share/terminfo root@192.168.1.12:/data/usr/share export TERMINFO=/data/usr/share/terminfo

Questionsudo systemctl enable munin Synchronizing state of munin.service with SysV service script with /lib/systemd/systemd-sysv-install. Executing: /lib/systemd/systemd-sysv-install enable munin The unit files have no installation config (WantedBy=, RequiredBy=, Also=, Alias= settings in the [Install] section, and DefaultInstance= for template units). This means they are not meant to be enabled using systemctl. Possible reasons for having this kind of units are: • A unit may be statically enabled by being symlinked from another unit's .

QuestionIn conf/local.conf IMAGE_INSTALL:remove += " qtbase"WARNING: IMAGE_INSTALL:remove += is not a recommended operator combination, please replace it. AnswerIMAGE_INSTALL:remove = " qtbase"