1. 01 4月, 2013 2 次提交
  2. 14 11月, 2012 1 次提交
  3. 09 10月, 2012 1 次提交
  4. 04 10月, 2012 1 次提交
  5. 28 9月, 2012 1 次提交
    • D
      Make most arch asm/module.h files use asm-generic/module.h · 786d35d4
      David Howells 提交于
      Use the mapping of Elf_[SPE]hdr, Elf_Addr, Elf_Sym, Elf_Dyn, Elf_Rel/Rela,
      ELF_R_TYPE() and ELF_R_SYM() to either the 32-bit version or the 64-bit version
      into asm-generic/module.h for all arches bar MIPS.
      
      Also, use the generic definition mod_arch_specific where possible.
      
      To this end, I've defined three new config bools:
      
       (*) HAVE_MOD_ARCH_SPECIFIC
      
           Arches define this if they don't want to use the empty generic
           mod_arch_specific struct.
      
       (*) MODULES_USE_ELF_RELA
      
           Arches define this if their modules can contain RELA records.  This causes
           the Elf_Rela mapping to be emitted and allows apply_relocate_add() to be
           defined by the arch rather than have the core emit an error message.
      
       (*) MODULES_USE_ELF_REL
      
           Arches define this if their modules can contain REL records.  This causes
           the Elf_Rel mapping to be emitted and allows apply_relocate() to be
           defined by the arch rather than have the core emit an error message.
      
      Note that it is possible to allow both REL and RELA records: m68k and mips are
      two arches that do this.
      
      With this, some arch asm/module.h files can be deleted entirely and replaced
      with a generic-y marker in the arch Kbuild file.
      
      Additionally, I have removed the bits from m32r and score that handle the
      unsupported type of relocation record as that's now handled centrally.
      Signed-off-by: NDavid Howells <dhowells@redhat.com>
      Acked-by: NSam Ravnborg <sam@ravnborg.org>
      Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
      786d35d4
  6. 20 9月, 2012 1 次提交
  7. 27 5月, 2012 1 次提交
    • L
      word-at-a-time: make the interfaces truly generic · 36126f8f
      Linus Torvalds 提交于
      This changes the interfaces in <asm/word-at-a-time.h> to be a bit more
      complicated, but a lot more generic.
      
      In particular, it allows us to really do the operations efficiently on
      both little-endian and big-endian machines, pretty much regardless of
      machine details.  For example, if you can rely on a fast population
      count instruction on your architecture, this will allow you to make your
      optimized <asm/word-at-a-time.h> file with that.
      
      NOTE! The "generic" version in include/asm-generic/word-at-a-time.h is
      not truly generic, it actually only works on big-endian.  Why? Because
      on little-endian the generic algorithms are wasteful, since you can
      inevitably do better. The x86 implementation is an example of that.
      
      (The only truly non-generic part of the asm-generic implementation is
      the "find_zero()" function, and you could make a little-endian version
      of it.  And if the Kbuild infrastructure allowed us to pick a particular
      header file, that would be lovely)
      
      The <asm/word-at-a-time.h> functions are as follows:
      
       - WORD_AT_A_TIME_CONSTANTS: specific constants that the algorithm
         uses.
      
       - has_zero(): take a word, and determine if it has a zero byte in it.
         It gets the word, the pointer to the constant pool, and a pointer to
         an intermediate "data" field it can set.
      
         This is the "quick-and-dirty" zero tester: it's what is run inside
         the hot loops.
      
       - "prep_zero_mask()": take the word, the data that has_zero() produced,
         and the constant pool, and generate an *exact* mask of which byte had
         the first zero.  This is run directly *outside* the loop, and allows
         the "has_zero()" function to answer the "is there a zero byte"
         question without necessarily getting exactly *which* byte is the
         first one to contain a zero.
      
         If you do multiple byte lookups concurrently (eg "hash_name()", which
         looks for both NUL and '/' bytes), after you've done the prep_zero_mask()
         phase, the result of those can be or'ed together to get the "either
         or" case.
      
       - The result from "prep_zero_mask()" can then be fed into "find_zero()"
         (to find the byte offset of the first byte that was zero) or into
         "zero_bytemask()" (to find the bytemask of the bytes preceding the
         zero byte).
      
         The existence of zero_bytemask() is optional, and is not necessary
         for the normal string routines.  But dentry name hashing needs it, so
         if you enable DENTRY_WORD_AT_A_TIME you need to expose it.
      
      This changes the generic strncpy_from_user() function and the dentry
      hashing functions to use these modified word-at-a-time interfaces.  This
      gets us back to the optimized state of the x86 strncpy that we lost in
      the previous commit when moving over to the generic version.
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      36126f8f
  8. 04 8月, 2011 1 次提交
  9. 09 10月, 2010 1 次提交
  10. 15 1月, 2009 1 次提交
  11. 07 1月, 2009 1 次提交
  12. 05 1月, 2009 2 次提交
  13. 03 1月, 2009 7 次提交
  14. 05 12月, 2008 1 次提交
  15. 07 9月, 2008 1 次提交
  16. 29 8月, 2008 2 次提交
  17. 28 7月, 2008 2 次提交
    • S
      sparc: enable headers_export again · a1bd021e
      Sam Ravnborg 提交于
      Update include/asm/Kbuild so we export
      all relvant headers for sparc.
      Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
      a1bd021e
    • S
      sparc, sparc64: use arch/sparc/include · a439fe51
      Sam Ravnborg 提交于
      The majority of this patch was created by the following script:
      
      ***
      ASM=arch/sparc/include/asm
      mkdir -p $ASM
      git mv include/asm-sparc64/ftrace.h $ASM
      git rm include/asm-sparc64/*
      git mv include/asm-sparc/* $ASM
      sed -ie 's/asm-sparc64/asm/g' $ASM/*
      sed -ie 's/asm-sparc/asm/g' $ASM/*
      ***
      
      The rest was an update of the top-level Makefile to use sparc
      for header files when sparc64 is being build.
      And a small fixlet to pick up the correct unistd.h from
      sparc64 code.
      Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
      a439fe51
  18. 18 7月, 2008 3 次提交
    • S
      sparc: join the remaining header files · f5e706ad
      Sam Ravnborg 提交于
      With this commit all sparc64 header files are moved to asm-sparc.
      The remaining files (71 files) were too different to be trivially
      merged so divide them up in a _32.h and a _64.h file which
      are both included from the file with no bit size.
      
      The following script were used:
      cd include
      FILES=`wc -l asm-sparc64/*h | grep -v '^     1' | cut -b 20-`
      
      for FILE in ${FILES}; do
        echo $FILE:
        BASE=`echo $FILE | cut -d '.' -f 1`
        FN32=${BASE}_32.h
        FN64=${BASE}_64.h
        GUARD=___ASM_SPARC_`echo $BASE | tr '-' '_' | tr [:lower:] [:upper:]`_H
        git mv asm-sparc/$FILE asm-sparc/$FN32
        git mv asm-sparc64/$FILE asm-sparc/$FN64
        echo git mv done
        printf "#ifndef %s\n" $GUARD                             >   asm-sparc/$FILE
        printf "#define %s\n" $GUARD                             >>  asm-sparc/$FILE
        printf "#if defined(__sparc__) && defined(__arch64__)\n" >>  asm-sparc/$FILE
        printf "#include <asm-sparc/%s>\n" $FN64                 >>  asm-sparc/$FILE
        printf "#else\n"                                         >>  asm-sparc/$FILE
        printf "#include <asm-sparc/%s>\n" $FN32                 >>  asm-sparc/$FILE
        printf "#endif\n"                                        >>  asm-sparc/$FILE
        printf "#endif\n"                                        >>  asm-sparc/$FILE
        git add asm-sparc/$FILE
        echo new file done
        printf "#include <asm-sparc/%s>\n" $FILE                 >  asm-sparc64/$FILE
        git add asm-sparc64/$FILE
        echo sparc64 file done
      done
      
      The guard contains three '_' to avoid conflict with existing guards.
      In additing the two Kbuild files are emptied to avoid breaking
      headers_* targets.
      We will reintroduce the exported header files when the necessary
      kbuild changes are merged.
      Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f5e706ad
    • S
      sparc: export openprom.h to userspace · b1a8bf92
      Sam Ravnborg 提交于
      sparc64 exports openprom.h to userspace so let sparc follow
      the example.
      As openprom.h pulled in another not-for-export vaddrs.h header
      file it required a few changes to fix the build.
      
      The definition af VMALLOC_* were moved to pgtable as this is
      where sparc64 has them.
      Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
      b1a8bf92
    • S
      sparc: copy exported sparc64 specific header files to asm-sparc · 09d3e1ba
      Sam Ravnborg 提交于
      Copy was done using the following simple script:
      
      set -e
      SPARC64="h display7seg.h envctrl.h psrcompat.h pstate.h uctx.h utrap.h watchdog.h"
      for FILE in ${SPARC64}; do
      	if [ -f asm-sparc/$FILE ]; then
      		echo $FILE exist in asm-sparc
      	fi
      	cat asm-sparc64/$FILE > asm-sparc/$FILE
      	printf "#include <asm-sparc/$FILE>\n" > asm-sparc64/$FILE
      done
      
      The name of the copied files are added to asm-sparc/Kbuild
      to keep "make headers_check" functional.
      Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
      09d3e1ba
  19. 22 4月, 2008 1 次提交
  20. 21 9月, 2006 1 次提交
  21. 19 9月, 2006 1 次提交
  22. 20 6月, 2006 1 次提交
  23. 18 6月, 2006 1 次提交