On Wed, Jul 22, 2009 at 4:36 PM, Mark Ver<[email protected]> wrote:
> Hi,
>
> Just recently downloaded the 20090630 version LTP. But it looks like there
> is a new testcase "eventfd2_03" included as part of default which is getting
> a compile problem and causing the LTP build to abort on s390x architecture:
>
> ...
> make[4]: Entering directory
> `/root/ltp-full-20090630/testcases/kernel/syscalls/eventfd2'
> gcc -g -O2 -I../../include -g -Wall -I../../../../include -Wall
> eventfd2_03.c -L../../../../lib -lltp -o eventfd2_03
> eventfd2_03.c:48:2: error: #error Cannot detect your architecture!
> eventfd2_03.c: In function ‘eventfd2’:
> eventfd2_03.c:54: error: ‘__NR_eventfd2’ undeclared (first use in this
> function)
> eventfd2_03.c:54: error: (Each undeclared identifier is reported only once
> eventfd2_03.c:54: error: for each function it appears in.)
> eventfd2_03.c: In function ‘xsem_wait’:
> eventfd2_03.c:65: warning: format ‘%llu’ expects type ‘long long unsigned
> int’, but argument 5 has type ‘u_int64_t’
> eventfd2_03.c: In function ‘main’:
> eventfd2_03.c:129: warning: implicit declaration of function ‘waitpid’
> make[4]: *** [eventfd2_03] Error 1
> make[4]: Leaving directory
> `/root/ltp-full-20090630/testcases/kernel/syscalls/eventfd2'
> make[3]: *** [all] Error 2
> make[3]: Leaving directory
> `/root/ltp-full-20090630/testcases/kernel/syscalls'
> make[2]: *** [all] Error 2
> make[2]: Leaving directory `/root/ltp-full-20090630/testcases/kernel'
> make[1]: *** [all] Error 2
> make[1]: Leaving directory `/root/ltp-full-20090630/testcases'
> make: *** [all] Error 2
> [r...@m36distro2 ltp-full-20090630]#
>
>
> Looking at the code it does:
>
> #ifndef __NR_eventfd2
> #if defined(__x86_64__)
> #define __NR_eventfd2 290
> #elif defined(__i386__)
> #define __NR_eventfd2 328
> #else
> #error Cannot detect your architecture!
> #endif
> #endif
>
> So right away it looks like this test is expecting some PC based features
> and may not work on any architecture except x86_64 and i386 compatible
> systems. Not really sure why it got included as part of the default set of
> testcases or why configure script did not weed it out as not for s390/s390x.
>
> The testcase seems to be new and is not there on the 20090228 release. I've
> heard that folks were successful using the 2009 May release as well, so this
> looks to be just an issue in the 20090630 release.
Mark,
All of the issues minus the syscalls on have been solved.
As for it not compiling on x86 / x86_64, yes, it will need to be
removed from the compile list. We're not there yet though with the
Makefiles, so until then, maybe this should be yanked from the default
build?
I can't seem to find anything that clearly states that this is
strictly an x86 specific kernel feature though, so maybe the syscalls
just need to be filled in...
Thanks,
-Garrett
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