Messages in this thread | | | Subject | Re: [PATCH] perf test shell: Add -D to check dynamic symbols for ubuntu/debian | From | Li Zhijian <> | Date | Wed, 9 May 2018 15:36:58 +0800 |
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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)] > List symbols in [file(s)] (a.out by default). > The options are: > ...snip... > -D, --dynamic Display dynamic symbols instead of normal symbols > --defined-only Display only defined symbols > -e (ignored) > -f, --format=FORMAT Use the output format FORMAT. FORMAT can be `bsd', > `sysv' or `posix'. The default is `bsd' > -g, --extern-only Display only external symbols > > I tested both debian/ubuntu and RHEL, they work as expected > > CC: Thomas Richter <tmricht@linux.vnet.ibm.com> > CC: Arnaldo Carvalho de Melo <acme@redhat.com> > Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> > --- > tools/perf/tests/shell/trace+probe_libc_inet_pton.sh | 2 +- > 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 @@ > . $(dirname $0)/lib/probe.sh > > libc=$(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 > > trace_libc_inet_pton_backtrace() { > idx=0
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