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SubjectRe: Re: [PATCH perf/core ] perf-probe: Fix to track down unnamed union/structure members
(2015/04/01 23:41), Arnaldo Carvalho de Melo wrote:
> Em Wed, Apr 01, 2015 at 06:08:17PM +0900, Masami Hiramatsu escreveu:
>> Ping?
>
> <SNIP>
>
>>> With this patch, perf probe can access unnamed fields.
>>> -----
>>> #./perf probe -nfx ./perf lock__delete ops 'locked_ops=ops->locked.ops'
>>> Added new event:
>>> probe_perf:lock__delete (on lock__delete in /home/mhiramat/ksrc/linux-3/tools/perf/perf with ops locked_ops=ops->locked.ops)
>
>>> You can now use it in all perf tools, such as:
>
>>> perf record -e probe_perf:lock__delete -aR sleep 1
>>> -----
>
>>> The original report of this issue is: https://lkml.org/lkml/2015/3/5/431
>
> what am I doing wrong?
>
> [root@ssdandy ~]# perf probe ~acme/bin/perf lock__delete 'locked_ops=ops'
> Added new event:
> probe_perf:lock__delete (on lock__delete in /home/acme/bin/perf with locked_ops=ops)
>
> You can now use it in all perf tools, such as:
>
> perf record -e probe_perf:lock__delete -aR sleep 1
>
> [root@ssdandy ~]# perf probe -d probe_perf:*
> Removed event: probe_perf:lock__delete
> [root@ssdandy ~]# perf probe ~acme/bin/perf lock__delete 'locked_ops=ops->locked'
> Semantic error: locked must be referred by '.'
> Error: Failed to add events.
> [root@ssdandy ~]# perf probe ~acme/bin/perf lock__delete 'locked_ops=ops.locked'
> Semantic error: locked must be referred by '->'
> Error: Failed to add events.
> [root@ssdandy ~]# perf probe ~acme/bin/perf lock__delete 'locked_ops=ops->locked'
> Semantic error: locked must be referred by '.'
> Error: Failed to add events.
> [root@ssdandy ~]# perf probe ~acme/bin/perf lock__delete 'locked_ops=ops->locked.ops'
> Semantic error: locked must be referred by '.'
> Error: Failed to add events.
> [root@ssdandy ~]#

Oops, thank you for reporting!
I must miss something...

Thank you,

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--
Masami HIRAMATSU
Linux Technology Research Center, System Productivity Research Dept.
Center for Technology Innovation - Systems Engineering
Hitachi, Ltd., Research & Development Group
E-mail: masami.hiramatsu.pt@hitachi.com




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