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SubjectRe: [PATCH] tools lib traceevent: Add support for IP address formats
On Thu, Dec 18, 2014 at 06:41:58PM -0700, David Ahern wrote:
> On 12/18/14 3:13 PM, David Ahern wrote:
> >Are you seeing something different?
>
> I put a tracepoint in the ipv4/ipv6 add/del address code. The IPv4 one
> prints the address using pi4 and pI4 and the IPv6 using pi6, pI6 and pI6c.

apart from your tracepoints, is there another tracepoint using this?
I couldn't find any.. I dont think it's a problem.. just wanted to
try it ;-)

thanks,
jirka

>
> Using ifconfig eth1 1.2.3.4/24
>
> I get this for trace_pipe which uses the in-kernel printf code:
>
> root@localhost:/sys/kernel/debug/tracing/events# cat ../trace_pipe
> ifconfig-601 [000] .... 710.660611: ipv4_del_addr: pI4=1.2.3.4
> pi4=001.002.003.004
> ifconfig-602 [000] .... 720.833559: ipv4_add_addr: pI4=1.2.3.4
> pi4=001.002.003.004
> ifconfig-602 [000] .Ns. 720.833966: ipv6_add_addr:
> pi6=fe80000000000000000202fffe020211
> pI6=fe80:0000:0000:0000:0002:02ff:fe02:0211 pI6c=fe80::2:2ff:fe02:211
> ifconfig-602 [000] .... 720.835413: ipv4_del_addr: pI4=1.2.3.4
> pi4=001.002.003.004
> ifconfig-602 [000] .N.. 720.835451: ipv4_add_addr: pI4=1.2.3.4
> pi4=001.002.003.004
>
>
> And this using perf:
> root@localhost:~# perf record -a -e ipv4:* -e ipv6:* --no-buffering | perf
> --no-pager script
>
> ifconfig 601 [000] 710.912862: ipv4:ipv4_del_addr: pI4=1.2.3.4
> pi4=001.002.003.004
> ifconfig 602 [000] 721.090776: ipv4:ipv4_add_addr: pI4=1.2.3.4
> pi4=001.002.003.004
> ifconfig 602 [000] 721.091177: ipv6:ipv6_add_addr:
> pi6=fe80000000000000000202fffe020211
> pI6=fe80:0000:0000:0000:0002:02ff:fe02:0211 pI6c=fe80::2:2ff:fe02:211
> ifconfig 602 [000] 721.092626: ipv4:ipv4_del_addr: pI4=1.2.3.4
> pi4=001.002.003.004
> ifconfig 602 [000] 721.092648: ipv4:ipv4_add_addr: pI4=1.2.3.4
> pi4=001.002.003.004
>
> (Don't be fooled by the differing timestamps; data collected from both using
> the same exact command. timestamp differences are perf vs tracing.)
>
> which suggest with the patch perf output matches tracing.
>
> David
>


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