1. 04 Oct, 2014 1 commit
    • Chen Gang's avatar
      arch/score/include/asm/Kbuild: Add generic "serial.h" · d32c98e9
      Chen Gang authored
      
      
      The related error (with allmodconfig under score):
      
          CC [M]  drivers/staging/speakup/speakup_acntpc.o
        In file included from drivers/staging/speakup/speakup_acntpc.c:33:0:
        drivers/staging/speakup/serialio.h:7:24: fatal error: asm/serial.h: No such file or directory
         #include <asm/serial.h>
                                ^
        compilation terminated.
        make[3]: *** [drivers/staging/speakup/speakup_acntpc.o] Error 1
        make[2]: *** [drivers/staging/speakup] Error 2
        make[1]: *** [drivers/staging] Error 2
        make: *** [drivers] Error 2
      Acked-by: default avatarLennox Wu <lennox.wu@gmail.com>
      Signed-off-by: default avatarChen Gang <gang.chen.5i5j@gmail.com>
      d32c98e9
  2. 08 Aug, 2014 1 commit
  3. 17 Jul, 2014 1 commit
    • Davidlohr Bueso's avatar
      arch, locking: Ciao arch_mutex_cpu_relax() · 3a6bfbc9
      Davidlohr Bueso authored
      The arch_mutex_cpu_relax() function, introduced by 34b133f8
      
      , is
      hacky and ugly. It was added a few years ago to address the fact
      that common cpu_relax() calls include yielding on s390, and thus
      impact the optimistic spinning functionality of mutexes. Nowadays
      we use this function well beyond mutexes: rwsem, qrwlock, mcs and
      lockref. Since the macro that defines the call is in the mutex header,
      any users must include mutex.h and the naming is misleading as well.
      
      This patch (i) renames the call to cpu_relax_lowlatency  ("relax, but
      only if you can do it with very low latency") and (ii) defines it in
      each arch's asm/processor.h local header, just like for regular cpu_relax
      functions. On all archs, except s390, cpu_relax_lowlatency is simply cpu_relax,
      and thus we can take it out of mutex.h. While this can seem redundant,
      I believe it is a good choice as it allows us to move out arch specific
      logic from generic locking primitives and enables future(?) archs to
      transparently define it, similarly to System Z.
      Signed-off-by: default avatarDavidlohr Bueso <davidlohr@hp.com>
      Signed-off-by: default avatarPeter Zijlstra <peterz@infradead.org>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Anton Blanchard <anton@samba.org>
      Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Bharat Bhushan <r65777@freescale.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chen Liqin <liqin.linux@gmail.com>
      Cc: Chris Metcalf <cmetcalf@tilera.com>
      Cc: Christian Borntraeger <borntraeger@de.ibm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: David Howells <dhowells@redhat.com>
      Cc: David S. Miller <davem@davemloft.net>
      Cc: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
      Cc: Dominik Dingel <dingel@linux.vnet.ibm.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
      Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
      Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Helge Deller <deller@gmx.de>
      Cc: Hirokazu Takata <takata@linux-m32r.org>
      Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
      Cc: James E.J. Bottomley <jejb@parisc-linux.org>
      Cc: James Hogan <james.hogan@imgtec.com>
      Cc: Jason Wang <jasowang@redhat.com>
      Cc: Jesper Nilsson <jesper.nilsson@axis.com>
      Cc: Joe Perches <joe@perches.com>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Joseph Myers <joseph@codesourcery.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
      Cc: Lennox Wu <lennox.wu@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Max Filippov <jcmvbkbc@gmail.com>
      Cc: Michael Neuling <mikey@neuling.org>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Mikael Starvik <starvik@axis.com>
      Cc: Nicolas Pitre <nico@linaro.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Paul Burton <paul.burton@imgtec.com>
      Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
      Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Qais Yousef <qais.yousef@imgtec.com>
      Cc: Qiaowei Ren <qiaowei.ren@intel.com>
      Cc: Rafael Wysocki <rafael.j.wysocki@intel.com>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Richard Henderson <rth@twiddle.net>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Steven Miao <realmz6@gmail.com>
      Cc: Steven Rostedt <srostedt@redhat.com>
      Cc: Stratos Karafotis <stratosk@semaphore.gr>
      Cc: Tim Chen <tim.c.chen@linux.intel.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vasily Kulikov <segoon@openwall.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>
      Cc: Waiman Long <Waiman.Long@hp.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Cc: Wolfram Sang <wsa@the-dreams.de>
      Cc: adi-buildroot-devel@lists.sourceforge.net
      Cc: linux390@de.ibm.com
      Cc: linux-alpha@vger.kernel.org
      Cc: linux-am33-list@redhat.com
      Cc: linux-arm-kernel@lists.infradead.org
      Cc: linux-c6x-dev@linux-c6x.org
      Cc: linux-cris-kernel@axis.com
      Cc: linux-hexagon@vger.kernel.org
      Cc: linux-ia64@vger.kernel.org
      Cc: linux@lists.openrisc.net
      Cc: linux-m32r-ja@ml.linux-m32r.org
      Cc: linux-m32r@ml.linux-m32r.org
      Cc: linux-m68k@lists.linux-m68k.org
      Cc: linux-metag@vger.kernel.org
      Cc: linux-mips@linux-mips.org
      Cc: linux-parisc@vger.kernel.org
      Cc: linuxppc-dev@lists.ozlabs.org
      Cc: linux-s390@vger.kernel.org
      Cc: linux-sh@vger.kernel.org
      Cc: linux-xtensa@linux-xtensa.org
      Cc: sparclinux@vger.kernel.org
      Link: http://lkml.kernel.org/r/1404079773.2619.4.camel@buesod1.americas.hpqcorp.net
      
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      3a6bfbc9
  4. 18 Apr, 2014 1 commit
  5. 13 Mar, 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-DESK
      
      Signed-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. 13 Jan, 2014 2 commits
  8. 12 Jan, 2014 1 commit
  9. 17 Dec, 2013 1 commit
  10. 14 Nov, 2013 1 commit
  11. 13 Nov, 2013 1 commit
  12. 25 Sep, 2013 3 commits
  13. 29 Jun, 2013 1 commit
  14. 23 Jun, 2013 2 commits
  15. 26 Feb, 2013 1 commit
  16. 03 Feb, 2013 1 commit
  17. 20 Dec, 2012 1 commit
  18. 19 Dec, 2012 2 commits
  19. 28 Nov, 2012 1 commit
  20. 13 Nov, 2012 1 commit
  21. 15 Oct, 2012 2 commits
  22. 05 Oct, 2012 1 commit
    • Jiri Kosina's avatar
      cross-arch: don't corrupt personality flags upon exec() · 16f3e95b
      Jiri Kosina authored
      Historically, the top three bytes of personality have been used for
      things such as ADDR_NO_RANDOMIZE, which made sense only for specific
      architectures.
      
      We now however have a flag there that is general no matter the
      architecture (UNAME26); generally we have to be careful to preserve the
      personality flags across exec().
      
      This patch tries to fix all architectures that forcefully overwrite
      personality flags during exec() (ppc32 and s390 have been fixed recently
      by commits f9783ec8 ("[S390] Do not clobber personality flags on
      exec") and 59e4c3a2
      
       ("powerpc/32: Don't clobber personality flags on
      exec") in a similar way already).
      Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
      Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
      Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
      Cc: Mike Frysinger <vapier@gentoo.org>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Mikael Starvik <starvik@axis.com>
      Cc: Jesper Nilsson <jesper.nilsson@axis.com>
      Cc: David Howells <dhowells@redhat.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Hirokazu Takata <takata@linux-m32r.org>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Chen Liqin <liqin.chen@sunplusct.com>
      Cc: Lennox Wu <lennox.wu@gmail.com>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Chris Zankel <chris@zankel.net>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      16f3e95b
  23. 04 Oct, 2012 1 commit
    • David Howells's avatar
      UAPI: Fix the guards on various asm/unistd.h files · 89013952
      David Howells authored
      
      
      asm-generic/unistd.h and a number of asm/unistd.h files have been given
      reinclusion guards that allow the guard to be overridden if __SYSCALL is
      defined.  Unfortunately, these files define __SYSCALL and don't undefine it
      when they've finished with it, thus rendering the guard ineffective.
      
      The reason for this override is to allow the file to be #included multiple
      times with different settings on __SYSCALL for purposes like generating syscall
      tables.
      
      The following guards are problematic:
      
      arch/arm64/include/asm/unistd.h:#if !defined(__ASM_UNISTD_H) || defined(__SYSCALL)
      arch/arm64/include/asm/unistd32.h:#if !defined(__ASM_UNISTD32_H) || defined(__SYSCALL)
      arch/c6x/include/asm/unistd.h:#if !defined(_ASM_C6X_UNISTD_H) || defined(__SYSCALL)
      arch/hexagon/include/asm/unistd.h:#if !defined(_ASM_HEXAGON_UNISTD_H) || defined(__SYSCALL)
      arch/openrisc/include/asm/unistd.h:#if !defined(__ASM_OPENRISC_UNISTD_H) || defined(__SYSCALL)
      arch/score/include/asm/unistd.h:#if !defined(_ASM_SCORE_UNISTD_H) || defined(__SYSCALL)
      arch/tile/include/asm/unistd.h:#if !defined(_ASM_TILE_UNISTD_H) || defined(__SYSCALL)
      arch/unicore32/include/asm/unistd.h:#if !defined(__UNICORE_UNISTD_H__) || defined(__SYSCALL)
      include/asm-generic/unistd.h:#if !defined(_ASM_GENERIC_UNISTD_H) || defined(__SYSCALL)
      
      On the assumption that the guards' ineffectiveness has passed unnoticed, just
      remove these guards entirely.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
      Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
      89013952
  24. 03 Oct, 2012 1 commit
  25. 01 Oct, 2012 2 commits
  26. 27 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
  27. 16 May, 2012 1 commit
    • Suresh Siddha's avatar
      fork: move the real prepare_to_copy() users to arch_dup_task_struct() · 55ccf3fe
      Suresh Siddha authored
      
      
      Historical prepare_to_copy() is mostly a no-op, duplicated for majority of
      the architectures and the rest following the x86 model of flushing the extended
      register state like fpu there.
      
      Remove it and use the arch_dup_task_struct() instead.
      Suggested-by: default avatarOleg Nesterov <oleg@redhat.com>
      Suggested-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      Signed-off-by: default avatarSuresh Siddha <suresh.b.siddha@intel.com>
      Link: http://lkml.kernel.org/r/1336692811-30576-1-git-send-email-suresh.b.siddha@intel.com
      
      Acked-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: David Howells <dhowells@redhat.com>
      Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: Richard Henderson <rth@twiddle.net>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
      Cc: Mike Frysinger <vapier@gentoo.org>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
      Cc: Mikael Starvik <starvik@axis.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: James E.J. Bottomley <jejb@parisc-linux.org>
      Cc: Helge Deller <deller@gmx.de>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Chen Liqin <liqin.chen@sunplusct.com>
      Cc: Lennox Wu <lennox.wu@gmail.com>
      Cc: David S. Miller <davem@davemloft.net>
      Cc: Chris Metcalf <cmetcalf@tilera.com>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
      Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
      55ccf3fe
  28. 08 May, 2012 1 commit
  29. 08 Apr, 2012 1 commit
  30. 28 Mar, 2012 2 commits
  31. 27 Mar, 2011 1 commit