Messages in this thread | | | Date | Fri, 10 Jun 2011 13:24:29 +0900 | From | Akihiro Nagai <> | Subject | Re: [PATCH -tip v4 0/7] perf: Introduce branch sub commands |
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(2011/05/31 0:26), David Ahern wrote: > On 05/30/2011 07:31 AM, Akihiro Nagai wrote: >>> The sample address can be converted to symbols and the output can be >>> added to perf-script rather easily. Attached is an example. I was going >>> to submit it back in April and got distracted. I'll rebase, move the >>> addr->sym conversion to a function and submit later today. >> OK. >> I agreed with implementing it on perf script. >> I'd like to try it. > > Updated patch. It applies on top of: > http://lkml.org/lkml/2011/5/27/385 It looks good.
> > Hopefully for BTS you only have to change the sample_addr_correlates_sym > function. Yes. I'd like to enhance perf-script like this:
# perf script -f ip,addr,comm,sym,dso
output format is: <comm> <ip> <sym_ip> <dso_ip> <addr> <sym_addr> <dso_addr>
actual output sample is: ls 0xffffffff81460b92 common_interrupt /lib/modules/3.0/build/vmlinux 0x0000003e9b000b20 _start /lib64/ld-2.13.so ls 0x0000003e9b000b23 _start /lib64/ld-2.13.so 0x0000003e9b004540 _dl_start /lib64/ld-2.13.so ...
By specifying 'ip' and 'addr' together, perf-script resolves symbol and dso's path about both of 'ip' and 'addr'.
> > I still need to look into out why some of the addresses for page-faults > are not resolving to symbols. I'd like to improve it referring perf branch's source codes.
Thank you.
> > David
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