Recent review of SystemTap test results on ARM running Fedora 15 hard float.

[William Cohen <wcohen at redhat dot com>]

I reviewed the SystemTap testsuite failures for Fedora 15 hard float running on ARM.  You can see the recent ARM test results in dejazilla at:

http://web.elastic.org/~dejazilla/viewsummary.php?_offset=0&_limit=40&_sort=1A&summary=&age=&rg=&tool=&variant=%3D%27armv7l-unknown-linux-gnu%27&versions=&pass=&fail=&kpass=&kfail=&xpass=&xfail=&untested=&unresolved=&unsupported=&warning=&error=


FAIL: backtrace-unwindsyms (0 0)
FAIL: bz6503 0 0
   bz6503.exp fails because no jffs2 or ext2 kernel modules.
	   Maybe use nfs and fat instead?

FAIL: cmd_parse15: eof
      cmd_parse.exp fail because avahi problems

FAIL: global_end (11)
      global_end.exp fails because "time = 0" is output by global_end2.stp

FAIL: gtod (0)
      gettimeofday_*() function do not work properly on arm

FAIL: ipaddr_IPv4_recvmsg find 'nc'
      doesn't seem to find /usr/bin/nc, but nc rpm has been installed on machine

FAIL: OVERLOAD2 no expected error
      Looks like this is caused by arm always returning 0 for get_cycles().
      This failure is troubling because OVERLOAD stuff will not work.

FAIL: prcwildcard function
      failed because no user space probing is available

FAIL: systemtap.base/pt_user_mode.stp startup (eof)
FAIL: systemtap.examples/profiling/thread-times run
      failed because on startup unable to register probe:
      	      perf.type(1).config(0).sample(1000000)

FAIL: vma_vdsodefault
      vma_vdso.stp uses uaddr() which didn't work on arm.

FAIL: warnings (timeout)
FAIL: warnings (0)
      took too long to compile systemtap.base/warning.stp, about 2:30
      fixed in commit 9e6bcc7a2ee69f4211135900e99bad9e1abfc665

FAIL: int64 function arguments -- numeric
FAIL: int64 function arguments -- numeric --kelf --ignore-dwarf
      PR13466

FAIL: systemtap.examples/io/mbrwatch run
      ran test as normal user dd used to test this fails as a result

FAIL: systemtap.examples/memory/hw_watch_addr run
FAIL: systemtap.examples/memory/hw_watch_sym run
      not enough hardware breakpoints available:
      WARNING: Too many hardware breakpoint probes requested for arm (1 vs. 0)
`

FAIL: uprobeslibgcc-O3default-prelink-debug prelink ./libuprobeslibgcc-O3default-prelink-debug.so
FAIL: uprobeslibgcc-O3default-prelink-sep-debug prelink ./libuprobeslibgcc-O3default-prelink-sep-debug.so
FAIL: uprobeslibgcc-O3default-prelink-sep-debug-after prelink ./libuprobeslibgcc-O3default-prelink-sep-debug-after.so
      uprobes not available on arm

FAIL: buildok/eighteen.stp
      unable to find kernel.function("*audit_getname@kernel/auditsc.c")
      CONFIG_AUDITSYSCALL is not enabled on arm fedora 15 kernels,
      something is diabling.


FAIL: buildok/process_test.stp
      unable to find $signr for:
        tapset/signal.stp:606:15
			:607:33


FAIL: buildok/syscalls-arch-detailed.stp
      unable to probe syscall.sigaltstack.return
      ARM doesn't have a sys_sigaltstack() function in the kernel.

FAIL: buildok/tcp-all-probes.stp
FAIL: buildok/tcp-detailed.stp
      unable to get identifier '$optname' tapset/tcp.stp:369:27

FAIL: buildok/twentyeightprime.stp
      CONFIG_UTRACE not available (seems like that should be UNTESTED)

FAIL: semok/thirtynine.stp
      can't access identifier '$prev' at .../semok/thirtynine.stp:6:40
FAIL: semok/thirtysix.stp
WARNING: Can't parse SDT_V3 operand 'r0': identifier '$arg1' at /media/greatpla\
ins/wcohen/systemtap_write/systemtap/testsuite/semok/thirtysix.stp:11:53

FAIL: systemtap.stress/current.stp compilation
      can't probe kernel.function("__switch_to").call
      need to adapt for arm

FAIL: 32-bit * nd_syscall
     ARM registers.stp can only read the first 4 arguments in registers.
     fifth/sixth arguments are problems on ARM, so these tests fail.

FAIL: unprivileged embedded C: no embedded C: --unprivileged: inet_get_ip_source(long)
FAIL: unprivileged embedded C: no embedded C: --unprivileged: get_ip(long)