Re: [PATCH] perf test shell: Add -D to check dynamic symbols for ubuntu/debian

[Li Zhijian]

Sorry, just noticed this path is out-of-date
i will rebase it


On 05/09/2018 03:36 PM, Li Zhijian wrote:
> ping
>
>
> On 12/27/2017 04:50 PM, Li Zhijian wrote:
> > On Ubuntu and Debian, we can't find any symbol including "inet_pton" from 'nm -g'
> > root@vm-lkp-nex04-8G-5 ~# nm -g /lib/x86_64-linux-gnu/libc-2.25.so | grep inet_pton
> > nm: /lib/x86_64-linux-gnu/libc-2.25.so: no symbols
> >
> > it looks libc.so has different symbol compositions at different distros
> >
> > Usage: nm [option(s)] [file(s)]
> > Â List symbols in [file(s)] (a.out by default).
> > Â The options are:
> > ...snip...
> > ÂÂ -D, --dynamicÂÂÂÂÂÂÂÂÂ Display dynamic symbols instead of normal symbols
> > ÂÂÂÂÂÂ --defined-onlyÂÂÂÂ Display only defined symbols
> > ÂÂ -eÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ (ignored)
> >  -f, --format=FORMAT Use the output format FORMAT. FORMAT can be `bsd',
> >  `sysv' or `posix'. The default is `bsd'
> > ÂÂ -g, --extern-onlyÂÂÂÂÂ Display only external symbols
> >
> > I tested both debian/ubuntu and RHEL, they work as expected
> >
> > CC: Thomas Richter <tmricht@xxxxxxxxxxxxxxxxxx>
> > CC: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
> > Signed-off-by: Li Zhijian <lizhijian@xxxxxxxxxxxxxx>
> > ---
> > Â tools/perf/tests/shell/trace+probe_libc_inet_pton.sh | 2 +-
> > Â 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/tools/perf/tests/shell/trace+probe_libc_inet_pton.sh b/tools/perf/tests/shell/trace+probe_libc_inet_pton.sh
> > index 8b3da21..f939bd6 100755
> > --- a/tools/perf/tests/shell/trace+probe_libc_inet_pton.sh
> > +++ b/tools/perf/tests/shell/trace+probe_libc_inet_pton.sh
> > @@ -11,7 +11,7 @@
> > Â . $(dirname $0)/lib/probe.sh
> > Â Â libc=$(grep -w libc /proc/self/maps | head -1 | sed -r 's/.*[[:space:]](\/.*)/\1/g')
> > -nm -g $libc 2>/dev/null | fgrep -q inet_pton || exit 254
> > +nm -gD $libc 2>/dev/null | fgrep -q inet_pton || exit 254
> > Â Â trace_libc_inet_pton_backtrace() {
> > ÂÂÂÂÂ idx=0

--
Best regards.
Li Zhijian (8528)