Hi Arnaldo, On Wed, 25 Nov 2020 14:27:55 -0300 Arnaldo Carvalho de Melo <a...@kernel.org> wrote:
> > Masami, have you stumbled on this already? > > [root@seventh ~]# perf probe security_locked_down%return 'ret=$retval' > Added new event: > probe:security_locked_down__return (on security_locked_down%return with > ret=$retval) > > You can now use it in all perf tools, such as: > > perf record -e probe:security_locked_down__return -aR sleep 1 > > [root@seventh ~]# perf probe security_locked_down what > Added new event: > probe:security_locked_down (on security_locked_down with what) > > You can now use it in all perf tools, such as: > > perf record -e probe:security_locked_down -aR sleep 1 > > [root@seventh ~]# > > > [root@seventh ~]# uname -r > 5.10.0-rc3.bpfsign+ > [root@seventh ~]# perf probe -l > probe:security_locked_down (on > security_locked_down@git/bpf/security/security.c with what) > probe:security_locked_down__return (on > security_locked_down%return@git/bpf/security/security.c with ret) > [root@seventh ~]# perf probe -D '*:*' > Semantic error :There is non-digit char in line number. > > Usage: perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...] > or: perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...] > or: perf probe [<options>] --del '[GROUP:]EVENT' ... > or: perf probe --list [GROUP:]EVENT ... > or: perf probe [<options>] --line 'LINEDESC' > or: perf probe [<options>] --vars 'PROBEPOINT' > or: perf probe [<options>] --funcs > > -D, --definition <[EVENT=]FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT > [[NAME=]ARG ...]> > Show trace event definition of given traceevent for > k/uprobe_events. As you can see, "-D" is showing definition. Not delete. (*) Delete is "-d" or "--del". (*) this option is for different version of kernel, remote-machine and boot-time tracing. > [root@seventh ~]# perf probe probe:security_locked_down > Semantic error :There is non-digit char in line number. > Error: Command Parse Error. > [root@seventh ~]# perf probe probe:security_locked_down__return > Semantic error :There is non-digit char in line number. > Error: Command Parse Error. Since you don't pass any option, both are for adding new probe event. What happen if you run $ perf probe -d "*:*" ? Thank you, -- Masami Hiramatsu <mhira...@kernel.org>
