• Roland McGrath's avatar
    i386 syscall audit fast-path · af0575bb
    Roland McGrath authored
    
    
    This adds fast paths for 32-bit syscall entry and exit when
    TIF_SYSCALL_AUDIT is set, but no other kind of syscall tracing.
    These paths does not need to save and restore all registers as
    the general case of tracing does.  Avoiding the iret return path
    when syscall audit is enabled helps performance a lot.
    Signed-off-by: default avatarRoland McGrath <roland@redhat.com>
    af0575bb