* [PATCH] perf test shell: Add -D to check dynamic symbols for ubuntu/debian
@ 2017-12-27 8:50 Li Zhijian
2018-05-09 7:36 ` Li Zhijian
0 siblings, 1 reply; 3+ messages in thread
From: Li Zhijian @ 2017-12-27 8:50 UTC (permalink / raw)
To: linux-kernel, acme
Cc: philip.li, brueckner, Li Zhijian, Thomas Richter,
Arnaldo Carvalho de Melo
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
--
2.7.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] perf test shell: Add -D to check dynamic symbols for ubuntu/debian
2017-12-27 8:50 [PATCH] perf test shell: Add -D to check dynamic symbols for ubuntu/debian Li Zhijian
@ 2018-05-09 7:36 ` Li Zhijian
2018-05-09 7:38 ` Li Zhijian
0 siblings, 1 reply; 3+ messages in thread
From: Li Zhijian @ 2018-05-09 7:36 UTC (permalink / raw)
To: linux-kernel, acme
Cc: philip.li, brueckner, Thomas Richter, Arnaldo Carvalho de Melo
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] perf test shell: Add -D to check dynamic symbols for ubuntu/debian
2018-05-09 7:36 ` Li Zhijian
@ 2018-05-09 7:38 ` Li Zhijian
0 siblings, 0 replies; 3+ messages in thread
From: Li Zhijian @ 2018-05-09 7:38 UTC (permalink / raw)
To: linux-kernel, acme
Cc: philip.li, brueckner, Thomas Richter, Arnaldo Carvalho de Melo
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)]
>> 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
--
Best regards.
Li Zhijian (8528)
^ permalink raw reply [flat|nested] 3+ messages in thread
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2017-12-27 8:50 [PATCH] perf test shell: Add -D to check dynamic symbols for ubuntu/debian Li Zhijian
2018-05-09 7:36 ` Li Zhijian
2018-05-09 7:38 ` Li Zhijian
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