[Bug libc/781] New: Kernel Feature is missing 2.6 features for powerpc32/powerpc64

["sjmunroe at us dot ibm dot com" <sourceware-bugzilla at sources dot redhat dot com>]

Anton Blanchard writes:

FYI I found what looked like some issues with the ppc32/64 glibc feature
selection code.

Anton

--

/* Starting with version 2.6.9, the waitid system call is available.  */
#if __LINUX_KERNEL_VERSION >=  0x020609
# define __ASSUME_WAITID_SYSCALL        1
#endif

We havent turned waitid on for ppc64 (32 or 64bit userspace). We expect
to do it shortly. I guess it should be disabled on ppc for the moment. 

/* The tgkill syscall was instroduced for i386 in 2.5.75.  For Alpha
   it was introduced in 2.6.0-test1 which unfortunately cannot be
   distinguished from 2.6.0.  On x86-64 it was introduced in
   2.6.0-test3. */
#if (__LINUX_KERNEL_VERSION >= 132427 && defined __i386__) \
    || (__LINUX_KERNEL_VERSION >= 132609 && defined __alpha__) \
    || (__LINUX_KERNEL_VERSION >= 132609 && defined __x86_64__) \
    || (__LINUX_KERNEL_VERSION >= 132609 && defined __sh__)
# define __ASSUME_TGKILL        1
#endif

tgkill was introduced into ppc32 and ppc64 on 2.6.0-test* too.

/* The utimes syscall has been available for some architectures
   forever.  For x86 it was introduced after 2.5.75, for x86-64 in
   2.6.0-test3.  */
#if defined __alpha__ || defined __ia64__ || defined __hppa__ \
    || defined __sparc__ \
    || (__LINUX_KERNEL_VERSION > 132427 && defined __i386__) \
    || (__LINUX_KERNEL_VERSION > 132609 && defined __x86_64__) \
    || (__LINUX_KERNEL_VERSION >= 132609 && defined __sh__)
# define __ASSUME_UTIMES        1
#endif

utimes was introduced into ppc32 and ppc64 on 2.6.0-test*.

/* The fixed version of the posix_fadvise64 syscall appeared in
   2.6.0-test3.  At least for x86.  */
#if __LINUX_KERNEL_VERSION >= 132609 && defined __i386__
# define __ASSUME_FADVISE64_64_SYSCALL  1
#endif

Its in 2.6.2 on both ppc32 and ppc64 kernels but its a 32bit userspace
call only.

-- 
           Summary: Kernel Feature is missing 2.6 features for
                    powerpc32/powerpc64
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: gotom at debian dot or dot jp
        ReportedBy: sjmunroe at us dot ibm dot com
                CC: glibc-bugs at sources dot redhat dot com
 GCC build triplet: powerpc64--linux
  GCC host triplet: powerpc64--linux
GCC target triplet: powerpc64--linux


http://sources.redhat.com/bugzilla/show_bug.cgi?id=781

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