• James Hogan's avatar
    SIGNAL: Move generic copy_siginfo() to signal.h · ca9eb49a
    James Hogan authored
    The generic copy_siginfo() is currently defined in
    asm-generic/siginfo.h, after including uapi/asm-generic/siginfo.h which
    defines the generic struct siginfo. However this makes it awkward for an
    architecture to use it if it has to define its own struct siginfo (e.g.
    MIPS and potentially IA64), since it means that asm-generic/siginfo.h
    can only be included after defining the arch-specific siginfo, which may
    be problematic if the arch-specific definition needs definitions from
    uapi/asm-generic/siginfo.h.
    
    It is possible to work around this by first including
    uapi/asm-generic/siginfo.h to get the constants before defining the
    arch-specific siginfo, and include asm-generic/siginfo.h after. However
    uapi headers can't be included by other uapi headers, so that first
    include has to be in an ifdef __kernel__, with the non __kernel__ case
    including the non-UAPI header instead.
    
    Instead of that mess, move the generic copy_siginfo() definition into
    linux/signal.h, which allows an arch-specific uapi/asm/siginfo.h to
    include asm-generic/siginfo.h and define the arch-specific siginfo, and
    for the generic copy_siginfo() to see that arch-specific definition.
    Signed-off-by: 's avatarJames Hogan <james.hogan@imgtec.com>
    Cc: Arnd Bergmann <arnd@arndb.de>
    Cc: Ralf Baechle <ralf@linux-mips.org>
    Cc: Petr Malat <oss@malat.biz>
    Cc: Tony Luck <tony.luck@intel.com>
    Cc: Fenghua Yu <fenghua.yu@intel.com>
    Cc: Christopher Ferris <cferris@google.com>
    Cc: linux-arch@vger.kernel.org
    Cc: linux-mips@linux-mips.org
    Cc: linux-ia64@vger.kernel.org
    Cc: linux-kernel@vger.kernel.org
    Cc: <stable@vger.kernel.org> # 4.0-
    Patchwork: https://patchwork.linux-mips.org/patch/12478/Signed-off-by: 's avatarRalf Baechle <ralf@linux-mips.org>
    ca9eb49a
siginfo.h 568 Bytes