An error occurred fetching the project authors.
  1. 17 Jul, 2015 1 commit
  2. 19 May, 2015 1 commit
  3. 10 Dec, 2014 1 commit
  4. 13 Sep, 2014 1 commit
  5. 08 Aug, 2014 1 commit
  6. 09 Feb, 2014 2 commits
    • Tim Chen's avatar
      locking/mcs: Allow architecture specific asm files to be used for contended case · ddf1d169
      Tim Chen authored
      This patch allows each architecture to add its specific assembly optimized
      arch_mcs_spin_lock_contended and arch_mcs_spinlock_uncontended for
      MCS lock and unlock functions.
      Signed-off-by: default avatarTim Chen <tim.c.chen@linux.intel.com>
      Cc: Scott J Norton <scott.norton@hp.com>
      Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
      Cc: AswinChandramouleeswaran <aswin@hp.com>
      Cc: George Spelvin <linux@horizon.com>
      Cc: Rik vanRiel <riel@redhat.com>
      Cc: Andrea Arcangeli <aarcange@redhat.com>
      Cc: MichelLespinasse <walken@google.com>
      Cc: Peter Hurley <peter@hurleysoftware.com>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: Alex Shi <alex.shi@linaro.org>
      Cc: Dave Hansen <dave.hansen@intel.com>
      Cc: Tim Chen <tim.c.chen@linux.intel.com>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: "Figo.zhang" <figo1802@gmail.com>
      Cc: "Paul E.McKenney" <paulmck@linux.vnet.ibm.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Davidlohr Bueso <davidlohr.bueso@hp.com>
      Cc: Waiman Long <waiman.long@hp.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Will Deacon <will.deacon@arm.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Matthew R Wilcox <matthew.r.wilcox@intel.com>
      Signed-off-by: default avatarPeter Zijlstra <peterz@infradead.org>
      Link: http://lkml.kernel.org/r/1390347382.3138.67.camel@schen9-DESKSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      ddf1d169
    • Tim Chen's avatar
      locking/mcs: Order the header files in Kbuild of each architecture in alphabetical order · b119fa61
      Tim Chen authored
      We perform a clean up of the Kbuid files in each architecture.
      We order the files in each Kbuild in alphabetical order
      by running the below script.
      
      for i in arch/*/include/asm/Kbuild
      do
              cat $i | gawk '/^generic-y/ {
                      i = 3;
                      do {
                              for (; i <= NF; i++) {
                                      if ($i == "\\") {
                                              getline;
                                              i = 1;
                                              continue;
                                      }
                                      if ($i != "")
                                              hdr[$i] = $i;
                              }
                              break;
                      } while (1);
                      next;
              }
              // {
                      print $0;
              }
              END {
                      n = asort(hdr);
                      for (i = 1; i <= n; i++)
                              print "generic-y += " hdr[i];
              }' > ${i}.sorted;
              mv ${i}.sorted $i;
      done
      Signed-off-by: default avatarTim Chen <tim.c.chen@linux.intel.com>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Matthew R Wilcox <matthew.r.wilcox@intel.com>
      Cc: AswinChandramouleeswaran <aswin@hp.com>
      Cc: Dave Hansen <dave.hansen@intel.com>
      Cc: "Paul E.McKenney" <paulmck@linux.vnet.ibm.com>
      Cc: Scott J Norton <scott.norton@hp.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Cc: "Figo.zhang" <figo1802@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Waiman Long <waiman.long@hp.com>
      Cc: Peter Hurley <peter@hurleysoftware.com>
      Cc: Andrea Arcangeli <aarcange@redhat.com>
      Cc: Tim Chen <tim.c.chen@linux.intel.com>
      Cc: Alex Shi <alex.shi@linaro.org>
      Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: George Spelvin <linux@horizon.com>
      Cc: MichelLespinasse <walken@google.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Davidlohr Bueso <davidlohr.bueso@hp.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarPeter Zijlstra <peterz@infradead.org>
      [ Fixed build bug. ]
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      b119fa61
  7. 18 Dec, 2013 1 commit
  8. 25 Sep, 2013 1 commit
  9. 19 Jun, 2013 1 commit
  10. 31 Mar, 2013 2 commits
  11. 13 Nov, 2012 1 commit
  12. 09 Oct, 2012 1 commit
  13. 03 Oct, 2012 1 commit
  14. 28 Sep, 2012 1 commit
    • David Howells's avatar
      Make most arch asm/module.h files use asm-generic/module.h · 786d35d4
      David Howells authored
      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: default avatarDavid Howells <dhowells@redhat.com>
      Acked-by: default avatarSam Ravnborg <sam@ravnborg.org>
      Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
      786d35d4
  15. 20 Sep, 2012 1 commit
  16. 26 May, 2012 1 commit
    • Linus Torvalds's avatar
      word-at-a-time: make the interfaces truly generic · 36126f8f
      Linus Torvalds authored
      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: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      36126f8f
  17. 04 Aug, 2011 1 commit
  18. 08 Oct, 2010 1 commit
  19. 15 Jan, 2009 1 commit
  20. 07 Jan, 2009 1 commit
  21. 05 Jan, 2009 1 commit
  22. 04 Jan, 2009 1 commit
  23. 03 Jan, 2009 7 commits
  24. 04 Dec, 2008 1 commit
  25. 06 Sep, 2008 1 commit
  26. 29 Aug, 2008 2 commits
  27. 27 Jul, 2008 2 commits
    • Sam Ravnborg's avatar
      sparc: enable headers_export again · a1bd021e
      Sam Ravnborg authored
      Update include/asm/Kbuild so we export
      all relvant headers for sparc.
      Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      a1bd021e
    • Sam Ravnborg's avatar
      sparc, sparc64: use arch/sparc/include · a439fe51
      Sam Ravnborg authored
      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: default avatarSam Ravnborg <sam@ravnborg.org>
      a439fe51
  28. 18 Jul, 2008 3 commits
    • Sam Ravnborg's avatar
      sparc: join the remaining header files · f5e706ad
      Sam Ravnborg authored
      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: default avatarSam Ravnborg <sam@ravnborg.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f5e706ad
    • Sam Ravnborg's avatar
      sparc: export openprom.h to userspace · b1a8bf92
      Sam Ravnborg authored
      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: default avatarSam Ravnborg <sam@ravnborg.org>
      b1a8bf92
    • Sam Ravnborg's avatar
      sparc: copy exported sparc64 specific header files to asm-sparc · 09d3e1ba
      Sam Ravnborg authored
      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: default avatarSam Ravnborg <sam@ravnborg.org>
      09d3e1ba