Re: [PATCH -tip v2 4/6] perf script: print DSOs and symbols for BTSbranch_from addr

From: Akihiro Nagai
Date: Thu Jul 21 2011 - 05:37:01 EST

(2011/07/18 1:22), David Ahern wrote:

On 07/17/2011 03:31 AM, Akihiro Nagai wrote:
Print DSOs and symbols for branch_from address of BTS.
BTS records branch_from address in 'addr' fields,
and branch_to address in 'ip' field. Latest perf-script
resolves DSOs and symbols only for 'ip' field.
This patch resolves them for 'addr' field too.

Description does not match code change. What you are doing is enhancing
the detection of when a sample address should correlate to a symbol. In
this case you are adding HW_BRANCH_INSTRUCTIONS event.
I see. In the next patch set, I'd like to fix it. For example,
"Enhance IP and ADDR correlation detection of BTS event"

Thank you.


# perf script -f ip,addr,dso,sym
3f03e016b0 (unknown) ([kernel.kallsyms]) ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e016b0 _start (/lib64/ ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e04b80 _dl_start (/lib64/ 3f03e016b3 _start (/lib64/
3f03e04b80 _dl_start (/lib64/ ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e04ba6 _dl_start (/lib64/ ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e04bad _dl_start (/lib64/ ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e04c1d _dl_start (/lib64/ 3f03e04bfb _dl_start (/lib64/

Signed-off-by: Akihiro Nagai<akihiro.nagai.hw@xxxxxxxxxxx>
Cc: Peter Zijlstra<peterz@xxxxxxxxxxxxx>
Cc: Frederic Weisbecker<fweisbec@xxxxxxxxx>
Cc: Paul Mackerras<paulus@xxxxxxxxx>
Cc: Ingo Molnar<mingo@xxxxxxx>
Cc: Arnaldo Carvalho de Melo<acme@xxxxxxxxxxxxx>
Cc: David Ahern<dsahern@xxxxxxxxx>
Cc: Masami Hiramatsu<>
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