(2014/09/18 5:59), Arnaldo Carvalho de Melo wrote:
> Em Wed, Sep 17, 2014 at 08:40:54AM +0000, Masami Hiramatsu escreveu:
>> Do not access kallsyms to show available variables and
>> show source lines in user binaries.
>> This behavior always requires the root privilege when
>> sysctl sets kernel.kptr_restrict=1, but we don't need
>> it just for analyzing user binaries.
>
>> +++ b/tools/perf/util/probe-event.c
>> @@ -697,11 +697,11 @@ end:
>> return ret;
>> }
>>
>> -int show_line_range(struct line_range *lr, const char *module)
>> +int show_line_range(struct line_range *lr, const char *module, bool user)
>> {
>
> make -C tools/perf build-test fails for the static build on:
>
> acme@linux-goap:~/git/linux> cat /etc/os-release
> NAME=openSUSE
> VERSION="12.3 (Dartmouth)"
> VERSION_ID="12.3"
> PRETTY_NAME="openSUSE 12.3 (Dartmouth) (i586)"
> ID=opensuse
> ANSI_COLOR="0;32"
> CPE_NAME="cpe:/o:opensuse:opensuse:12.3"
> acme@linux-goap:~/git/linux>
>
> util/probe-event.c:824:5: error: conflicting types for 'show_line_range'
> In file included from util/probe-event.c:45:0:
> util/probe-event.h:131:12: note: previous declaration of
> 'show_line_range' was here
> make[3]: *** [util/probe-event.o] Error 1
> make[2]: *** [all] Error 2
> test: test -x ./perf
> make[1]: *** [make_static] Error 1
> make: *** [build-test] Error 2
> make: Leaving directory `/home/acme/git/linux/tools/perf'
> acme@linux-goap:~/git/linux>
>
> And on:
>
> acme@ubuntu13:~/git/linux$ cat /etc/os-release
> NAME="Ubuntu"
> VERSION="13.10, Saucy Salamander"
> ID=ubuntu
> ID_LIKE=debian
> PRETTY_NAME="Ubuntu 13.10"
> VERSION_ID="13.10"
> HOME_URL="http://www.ubuntu.com/";
> SUPPORT_URL="http://help.ubuntu.com/";
> BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/";
> acme@ubuntu13:~/git/linux$
>
> CC util/probe-event.o
> util/probe-event.c:824:5: error: conflicting types for ‘show_line_range’
> int show_line_range(struct line_range *lr __maybe_unused,
> ^
> In file included from util/probe-event.c:45:0:
> util/probe-event.h:131:12: note: previous declaration of
> ‘show_line_range’ was here
> extern int show_line_range(struct line_range *lr, const char *module,
> ^
> make[3]: *** [util/probe-event.o] Error 1
> make[3]: *** Waiting for unfinished jobs....
> make[2]: *** [all] Error 2
> test: test -x ./perf
> make[1]: *** [make_static] Error 1
> make: *** [build-test] Error 2
> make: Leaving directory `/home/acme/git/linux/tools/perf'
>
> ---------------------------------------------------------------------
>
> Probably because I had not installed needed DWARF support libraries and
> you forgot to update this:
>
> int show_line_range(struct line_range *lr __maybe_unused,
> const char *module __maybe_unused)
> {
> pr_warning("Debuginfo-analysis is not supported.\n");
> return -ENOSYS;
> }
Oops! Right, I forgot that. Maybe I should move this to the header file
so that I can easily avoid this kind of mistake...
> Fixing it up by adding the missing 'bool user'.
Thank you!
--
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Research Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: [email protected]
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