On Wed, Jun 23, 2010 at 12:23:44PM -0700, H. Peter Anvin wrote:

quoted

quoted

arch/s390/kernel/sys_s390.c:SYSCALL_DEFINE(s390_fallocate)(int fd, int mode, loff_t offset,
arch/sparc/kernel/sys_sparc_64.c:SYSCALL_DEFINE1(sparc_pipe_real, struct pt_regs *, regs)

In fact we sort of wanted to standardize the name of arch overriden compat
syscalls, so that userspace programs playing with syscalls tracing won't have
to deal with arch naming differences.

That seems totally wrong in so many ways.

What userspace sees is the system call name, e.g. fallocate or pipe.  It
should *not* be visible to userspace that there is an arch-specici
implementation.

This is really just the in-kernel name.  With tracing we export it to
userspace, so agreed that we should stay consistent.  We need a good
way to override both native and compat system calls with arch version
to always export the sys_ / compat_sys names.