• Masahiro Yamada's avatar
    arch: unexport asm/shmparam.h for all architectures · 36c0f7f0
    Masahiro Yamada authored
    Most architectures do not export shmparam.h to user-space.
    
      $ find arch -name shmparam.h  | sort
      arch/alpha/include/asm/shmparam.h
      arch/arc/include/asm/shmparam.h
      arch/arm64/include/asm/shmparam.h
      arch/arm/include/asm/shmparam.h
      arch/csky/include/asm/shmparam.h
      arch/ia64/include/asm/shmparam.h
      arch/mips/include/asm/shmparam.h
      arch/nds32/include/asm/shmparam.h
      arch/nios2/include/asm/shmparam.h
      arch/parisc/include/asm/shmparam.h
      arch/powerpc/include/asm/shmparam.h
      arch/s390/include/asm/shmparam.h
      arch/sh/include/asm/shmparam.h
      arch/sparc/include/asm/shmparam.h
      arch/x86/include/asm/shmparam.h
      arch/xtensa/include/asm/shmparam.h
    
    Strangely, some users of the asm-generic wrapper export shmparam.h
    
      $ git grep 'generic-y += shmparam.h'
      arch/c6x/include/uapi/asm/Kbuild:generic-y += shmparam.h
      arch/h8300/include/uapi/asm/Kbuild:generic-y += shmparam.h
      arch/hexagon/include/uapi/asm/Kbuild:generic-y += shmparam.h
      arch/m68k/include/uapi/asm/Kbuild:generic-y += shmparam.h
      arch/microblaze/include/uapi/asm/Kbuild:generic-y += shmparam.h
      arch/openrisc/include/uapi/asm/Kbuild:generic-y += shmparam.h
      arch/riscv/include/asm/Kbuild:generic-y += shmparam.h
      arch/unicore32/include/uapi/asm/Kbuild:generic-y += shmparam.h
    
    The newly added riscv correctly creates the asm-generic wrapper
    in the kernel space, but the others (c6x, h8300, hexagon, m68k,
    microblaze, openrisc, unicore32) create the one in the uapi directory.
    
    Digging into the git history, now I guess fcc8487d ("uapi:
    export all headers under uapi directories") was the misconversion.
    Prior to that commit, no architecture exported to shmparam.h
    As its commit description said, that commit exported shmparam.h
    for c6x, h8300, hexagon, m68k, openrisc, unicore32.
    
    83f0124a ("microblaze: remove asm-generic wrapper headers")
    accidentally exported shmparam.h for microblaze.
    
    This commit unexports shmparam.h for those architectures.
    
    There is no more reason to export include/uapi/asm-generic/shmparam.h,
    so it has been moved to include/asm-generic/shmparam.h
    
    Link: http://lkml.kernel.org/r/1546904307-11124-1-git-send-email-yamada.masahiro@socionext.comSigned-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
    Acked-by: default avatarStafford Horne <shorne@gmail.com>
    Cc: Geert Uytterhoeven <geert@linux-m68k.org>
    Cc: Michal Simek <monstr@monstr.eu>
    Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
    Cc: Richard Kuo <rkuo@codeaurora.org>
    Cc: Guan Xuetao <gxt@pku.edu.cn>
    Cc: Nicolas Dichtel <nicolas.dichtel@6wind.com>
    Cc: Arnd Bergmann <arnd@arndb.de>
    Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com>
    Cc: Greentime Hu <green.hu@gmail.com>
    Cc: Guo Ren <guoren@kernel.org>
    Cc: Palmer Dabbelt <palmer@sifive.com>
    Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
    Cc: Mark Salter <msalter@redhat.com>
    Cc: Albert Ou <aou@eecs.berkeley.edu>
    Cc: Jonas Bonn <jonas@southpole.se>
    Cc: Vincent Chen <deanbo422@gmail.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    36c0f7f0
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