Em Fri, Jul 31, 2015 at 12:35:22PM -0300, Arnaldo Carvalho de Melo escreveu:
> But point here is, when I see "enable passing
> bpf object file to --event" I apply the patch and expect to be able to
> go straight away and do:
> perf record -e foo.o sleep 1
> And get some informative message as to hey, yes, I managed to do what
> you asked or something is wrong, but I get:
> [root@felicio ~]# perf record --event foo.o sleep
> event syntax error: 'foo.o'
> \___ parser error
> Run 'perf list' for a list of valid events
> usage: perf record [<options>] [<command>]
> or: perf record [<options>] -- <command> [<options>]
> -e, --event <event> event selector. use 'perf list' to list available
> events
> [root@felicio ~]#
> So, is it enabled or is it not? Doesn't look like. I.e. I think the best
> thing is to only expose this when it can be used. Till that time, we can
I just tried gdb'ing this with a breakpoint on parse_events_load_bpf(),
but when I run:
(gdb) b parse_events_load_bpf
Breakpoint 1 at 0x48b11b: file util/parse-events.c, line 488.
(gdb) run record -e foo.o sleep 1
Starting program: /root/bin/perf record -e foo.o sleep 1
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
event syntax error: 'foo.o'
\___ parser error
Run 'perf list' for a list of valid events
Somehow it is not calling what the changeset says it would call when passing
"-e foo.o", investigating...
- Arnaldo
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