1. 19 Dec, 2012 1 commit
  2. 28 Nov, 2012 3 commits
  3. 15 Oct, 2012 2 commits
  4. 12 Oct, 2012 1 commit
    • Jeff Layton's avatar
      vfs: define struct filename and have getname() return it · 91a27b2a
      Jeff Layton authored
      getname() is intended to copy pathname strings from userspace into a
      kernel buffer. The result is just a string in kernel space. It would
      however be quite helpful to be able to attach some ancillary info to
      the string.
      
      For instance, we could attach some audit-related info to reduce the
      amount of audit-related processing needed. When auditing is enabled,
      we could also call getname() on the string more than once and not
      need to recopy it from userspace.
      
      This patchset converts the getname()/putname() interfaces to return
      a struct instead of a string. For now, the struct just tracks the
      string in kernel space and the original userland pointer for it.
      
      Later, we'll add other information to the struct as it becomes
      convenient.
      Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      91a27b2a
  5. 05 Oct, 2012 3 commits
  6. 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
  7. 03 Oct, 2012 1 commit
  8. 02 Oct, 2012 1 commit
  9. 01 Oct, 2012 3 commits
  10. 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
  11. 23 Sep, 2012 1 commit
    • Frederic Weisbecker's avatar
      score: Add missing RCU idle APIs on idle loop · 0ee23fda
      Frederic Weisbecker authored
      In the old times, the whole idle task was considered
      as an RCU quiescent state. But as RCU became more and
      more successful overtime, some RCU read side critical
      section have been added even in the code of some
      architectures idle tasks, for tracing for example.
      
      So nowadays, rcu_idle_enter() and rcu_idle_exit() must
      be called by the architecture to tell RCU about the part
      in the idle loop that doesn't make use of rcu read side
      critical sections, typically the part that puts the CPU
      in low power mode.
      
      This is necessary for RCU to find the quiescent states in
      idle in order to complete grace periods.
      
      Add this missing pair of calls in scores's idle loop.
      Reported-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Chen Liqin <liqin.chen@sunplusct.com>
      Cc: Lennox Wu <lennox.wu@gmail.com>
      Cc: <stable@vger.kernel.org> # 3.3+
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      Reviewed-by: default avatarJosh Triplett <josh@joshtriplett.org>
      0ee23fda
  12. 01 Jun, 2012 5 commits
  13. 23 May, 2012 1 commit
  14. 21 May, 2012 7 commits
  15. 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.comAcked-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
  16. 08 May, 2012 1 commit
  17. 05 May, 2012 2 commits
  18. 08 Apr, 2012 1 commit
  19. 28 Mar, 2012 2 commits
  20. 01 Mar, 2012 1 commit
  21. 05 Feb, 2012 1 commit