1. 13 3月, 2010 7 次提交
    • F
      um: remove dma_sync_single_range · 771cb3ec
      FUJITA Tomonori 提交于
      dma_sync_single_for_cpu/for_device supports a partial sync so there is no
      point to have dma_sync_single_range (also dma_sync_single was obsoleted
      long ago, replaced with dma_sync_single_for_cpu/for_device).
      
      There is no user of dma_sync_single_range() in mainline and only Alpha
      architecture supports dma_sync_single_range().  So it's unlikely that
      someone out of the tree uses it.
      Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
      Cc: Jeff Dike <jdike@addtoit.com>
      Acked-by: NDavid S. Miller <davem@davemloft.net>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      771cb3ec
    • C
      um: use generic ptrace_resume code · 1bd09508
      Christoph Hellwig 提交于
      Use the generic ptrace_resume code for PTRACE_SYSCALL, PTRACE_CONT,
      PTRACE_KILL and PTRACE_SINGLESTEP.  This implies defining
      arch_has_single_step in <asm/ptrace.h> and implementing the
      user_enable_single_step and user_disable_single_step functions, which also
      causes the breakpoint information to be cleared on fork, which could be
      considered a bug fix.
      
      Also the TIF_SYSCALL_TRACE thread flag is now cleared on PTRACE_KILL which
      it previously wasn't which is consistent with all architectures using the
      modern ptrace code.
      
      XXX: I'm not sure arch_has_single_step() is placed in the exactly correct
      location, please verify in which of the ptrace headers it should really
      be.
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Roland McGrath <roland@redhat.com>
      Cc: Jeff Dike <jdike@addtoit.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      1bd09508
    • C
      Add generic sys_olduname() · 5cacdb4a
      Christoph Hellwig 提交于
      Add generic implementations of the old and really old uname system calls.
      Note that sh only implements sys_olduname but not sys_oldolduname, but I'm
      not going to bother with another ifdef for that special case.
      
      m32r implemented an old uname but never wired it up, so kill it, too.
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Hirokazu Takata <takata@linux-m32r.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: James Morris <jmorris@namei.org>
      Cc: Andreas Schwab <schwab@linux-m68k.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      5cacdb4a
    • C
      improve sys_newuname() for compat architectures · e28cbf22
      Christoph Hellwig 提交于
      On an architecture that supports 32-bit compat we need to override the
      reported machine in uname with the 32-bit value.  Instead of doing this
      separately in every architecture introduce a COMPAT_UTS_MACHINE define in
      <asm/compat.h> and apply it directly in sys_newuname().
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Hirokazu Takata <takata@linux-m32r.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: James Morris <jmorris@namei.org>
      Cc: Andreas Schwab <schwab@linux-m68k.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      e28cbf22
    • C
      Add generic sys_ipc wrapper · baed7fc9
      Christoph Hellwig 提交于
      Add a generic implementation of the ipc demultiplexer syscall.  Except for
      s390 and sparc64 all implementations of the sys_ipc are nearly identical.
      
      There are slight differences in the types of the parameters, where mips
      and powerpc as the only 64-bit architectures with sys_ipc use unsigned
      long for the "third" argument as it gets casted to a pointer later, while
      it traditionally is an "int" like most other paramters.  frv goes even
      further and uses unsigned long for all parameters execept for "ptr" which
      is a pointer type everywhere.  The change from int to unsigned long for
      "third" and back to "int" for the others on frv should be fine due to the
      in-register calling conventions for syscalls (we already had a similar
      issue with the generic sys_ptrace), but I'd prefer to have the arch
      maintainers looks over this in details.
      
      Except for that h8300, m68k and m68knommu lack an impplementation of the
      semtimedop sub call which this patch adds, and various architectures have
      gets used - at least on i386 it seems superflous as the compat code on
      x86-64 and ia64 doesn't even bother to implement it.
      
      [akpm@linux-foundation.org: add sys_ipc to sys_ni.c]
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Hirokazu Takata <takata@linux-m32r.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@elte.hu>
      Reviewed-by: NH. Peter Anvin <hpa@zytor.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: James Morris <jmorris@namei.org>
      Cc: Andreas Schwab <schwab@linux-m68k.org>
      Acked-by: NJesper Nilsson <jesper.nilsson@axis.com>
      Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      Acked-by: NDavid Howells <dhowells@redhat.com>
      Acked-by: NKyle McMartin <kyle@mcmartin.ca>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      baed7fc9
    • C
      Add generic sys_old_mmap() · a4679373
      Christoph Hellwig 提交于
      Add a generic implementation of the old mmap() syscall, which expects its
      argument in a memory block and switch all architectures over to use it.
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Hirokazu Takata <takata@linux-m32r.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@elte.hu>
      Reviewed-by: NH. Peter Anvin <hpa@zytor.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: James Morris <jmorris@namei.org>
      Cc: Andreas Schwab <schwab@linux-m68k.org>
      Acked-by: NJesper Nilsson <jesper.nilsson@axis.com>
      Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      Acked-by: NGreg Ungerer <gerg@uclinux.org>
      Acked-by: NDavid Howells <dhowells@redhat.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      a4679373
    • C
      Add generic sys_old_select() · 5d0e5283
      Christoph Hellwig 提交于
      Add a generic implementation of the old select() syscall, which expects
      its argument in a memory block and switch all architectures over to use
      it.
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Hirokazu Takata <takata@linux-m32r.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@elte.hu>
      Reviewed-by: NH. Peter Anvin <hpa@zytor.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: James Morris <jmorris@namei.org>
      Acked-by: NAndreas Schwab <schwab@linux-m68k.org>
      Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      Acked-by: NGreg Ungerer <gerg@uclinux.org>
      Acked-by: NDavid Howells <dhowells@redhat.com>
      Cc: Andreas Schwab <schwab@linux-m68k.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      5d0e5283
  2. 07 3月, 2010 4 次提交
  3. 04 3月, 2010 1 次提交
  4. 26 2月, 2010 2 次提交
  5. 21 2月, 2010 1 次提交
    • R
      MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself · 4b3073e1
      Russell King 提交于
      On VIVT ARM, when we have multiple shared mappings of the same file
      in the same MM, we need to ensure that we have coherency across all
      copies.  We do this via make_coherent() by making the pages
      uncacheable.
      
      This used to work fine, until we allowed highmem with highpte - we
      now have a page table which is mapped as required, and is not available
      for modification via update_mmu_cache().
      
      Ralf Beache suggested getting rid of the PTE value passed to
      update_mmu_cache():
      
        On MIPS update_mmu_cache() calls __update_tlb() which walks pagetables
        to construct a pointer to the pte again.  Passing a pte_t * is much
        more elegant.  Maybe we might even replace the pte argument with the
        pte_t?
      
      Ben Herrenschmidt would also like the pte pointer for PowerPC:
      
        Passing the ptep in there is exactly what I want.  I want that
        -instead- of the PTE value, because I have issue on some ppc cases,
        for I$/D$ coherency, where set_pte_at() may decide to mask out the
        _PAGE_EXEC.
      
      So, pass in the mapped page table pointer into update_mmu_cache(), and
      remove the PTE value, updating all implementations and call sites to
      suit.
      
      Includes a fix from Stephen Rothwell:
      
        sparc: fix fallout from update_mmu_cache API change
      Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
      Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      4b3073e1
  6. 18 1月, 2010 1 次提交
    • L
      x86: Fix breakage of UML from the changes in the rwsem system · 4126faf0
      Linus Torvalds 提交于
      The patches 5d0b7235 and
      bafaecd1 broke the UML build:
      
      On Sun, 17 Jan 2010, Ingo Molnar wrote:
      >
      > FYI, -tip testing found that these changes break the UML build:
      >
      > kernel/built-in.o: In function `__up_read':
      > /home/mingo/tip/arch/x86/include/asm/rwsem.h:192: undefined reference to `call_rwsem_wake'
      > kernel/built-in.o: In function `__up_write':
      > /home/mingo/tip/arch/x86/include/asm/rwsem.h:210: undefined reference to `call_rwsem_wake'
      > kernel/built-in.o: In function `__downgrade_write':
      > /home/mingo/tip/arch/x86/include/asm/rwsem.h:228: undefined reference to `call_rwsem_downgrade_wake'
      > kernel/built-in.o: In function `__down_read':
      > /home/mingo/tip/arch/x86/include/asm/rwsem.h:112: undefined reference to `call_rwsem_down_read_failed'
      > kernel/built-in.o: In function `__down_write_nested':
      > /home/mingo/tip/arch/x86/include/asm/rwsem.h:154: undefined reference to `call_rwsem_down_write_failed'
      > collect2: ld returned 1 exit status
      
      Add lib/rwsem_64.o to the UML subarch objects to fix.
      
      LKML-Reference: <alpine.LFD.2.00.1001171023440.13231@localhost.localdomain>
      Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
      4126faf0
  7. 14 1月, 2010 1 次提交
  8. 16 12月, 2009 3 次提交
  9. 15 12月, 2009 1 次提交
  10. 12 12月, 2009 1 次提交
  11. 11 12月, 2009 1 次提交
  12. 14 10月, 2009 2 次提交
    • T
      um: Remove BKL from mmapper · d63c489b
      Thomas Gleixner 提交于
      cycle_kernel_lock() was added during the big BKL pushdown. It should
      ensure the serializiation against driver init code.
      
      mmapper_open() cannot be called before misc_register() succeeded, but
      p_buf might be uninitialized.
      
      Move the initialization of p_buf before the misc_register() call and
      get rid of cycle_kernel_lock().
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      LKML-Reference: <20091010153349.682213670@linutronix.de>
      Cc: Jeff Dike <jdike@addtoit.com>
      d63c489b
    • T
      um: Remove BKL from random · df502e38
      Thomas Gleixner 提交于
      cycle_kernel_lock() was added during the big BKL pushdown. It should
      ensure the serializiation against driver init code. In this case there
      is nothing to serialize. Remove it.
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      LKML-Reference: <20091010153349.641118498@linutronix.de>
      Cc: Jeff Dike <jdike@addtoit.com>
      df502e38
  13. 12 10月, 2009 1 次提交
  14. 25 9月, 2009 1 次提交
  15. 24 9月, 2009 2 次提交
  16. 22 9月, 2009 4 次提交
  17. 21 9月, 2009 3 次提交
  18. 20 9月, 2009 2 次提交
    • J
      includecheck fix: um, helper.c · edf382bc
      Jaswinder Singh Rajput 提交于
      fix the following 'make includecheck' warning:
      
        arch/um/os-Linux/helper.c: linux/limits.h is included more than once.
      Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com>
      Cc: jdike@addtoit.com
      Cc: Sam Ravnborg <sam@ravnborg.org>
      LKML-Reference: <1247064950.4382.45.camel@ht.satnam>
      Acked-by: NWANG Cong <xiyou.wangcong@gmail.com>
      edf382bc
    • S
      arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0 · 51b563fc
      Sam Ravnborg 提交于
      Albin Tonnerre <albin.tonnerre@free-electrons.com> reported:
      
          Bash 4 filters out variables which contain a dot in them.
          This happends to be the case of CPPFLAGS_vmlinux.lds.
          This is rather unfortunate, as it now causes
          build failures when using SHELL=/bin/bash to compile,
          or when bash happens to be used by make (eg when it's /bin/sh)
      
      Remove the common definition of CPPFLAGS_vmlinux.lds by
      pushing relevant stuff to either Makefile.build or the
      arch specific kernel/Makefile where we build the linker script.
      
      This is also nice cleanup as we move the information out where
      it is used.
      
      Notes for the different architectures touched:
      
      arm - we use an already exported symbol
      cris - we use a config symbol aleady available
             [Not build tested]
      mips - the jiffies complexity has moved to vmlinux.lds.S where we need it.
             Added a few variables to CPPFLAGS - they are only used by
             the linker script.
             [Not build tested]
      powerpc - removed assignment that is not needed
                [not build tested]
      sparc - simplified it using $(BITS)
      um - introduced a few new exported variables to deal with this
      xtensa - added options to CPP invocation
               [not build tested]
      
      Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Mikael Starvik <starvik@axis.com>
      Cc: Jesper Nilsson <jesper.nilsson@axis.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Chris Zankel <chris@zankel.net>
      Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
      51b563fc
  19. 10 9月, 2009 1 次提交
  20. 02 9月, 2009 1 次提交
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