1. 08 6月, 2011 1 次提交
  2. 23 3月, 2011 1 次提交
  3. 09 10月, 2010 1 次提交
  4. 26 5月, 2010 1 次提交
  5. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  6. 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
  7. 03 12月, 2009 1 次提交
  8. 02 11月, 2009 1 次提交
  9. 18 8月, 2009 1 次提交
  10. 16 6月, 2009 1 次提交
  11. 16 3月, 2009 1 次提交
  12. 27 12月, 2008 1 次提交
  13. 05 12月, 2008 1 次提交
  14. 01 12月, 2008 1 次提交
  15. 29 8月, 2008 1 次提交
  16. 25 7月, 2008 1 次提交
  17. 18 7月, 2008 1 次提交
    • A
      sparc/mm/: possible cleanups · 50215d65
      Adrian Bunk 提交于
      This patch contains the following possible cleanups:
      - make the following needlessly global code static:
        - fault.c: force_user_fault()
        - init.c: calc_max_low_pfn()
        - init.c: pgt_cache_water[]
        - init.c: map_high_region()
        - srmmu.c: hwbug_bitmask
        - srmmu.c: srmmu_swapper_pg_dir
        - srmmu.c: srmmu_context_table
        - srmmu.c: is_hypersparc
        - srmmu.c: srmmu_cache_pagetables
        - srmmu.c: srmmu_nocache_size
        - srmmu.c: srmmu_nocache_end
        - srmmu.c: srmmu_get_nocache()
        - srmmu.c: srmmu_free_nocache()
        - srmmu.c: srmmu_early_allocate_ptable_skeleton()
        - srmmu.c: srmmu_nocache_calcsize()
        - srmmu.c: srmmu_nocache_init()
        - srmmu.c: srmmu_alloc_thread_info()
        - srmmu.c: early_pgtable_allocfail()
        - srmmu.c: srmmu_early_allocate_ptable_skeleton()
        - srmmu.c: srmmu_allocate_ptable_skeleton()
        - srmmu.c: srmmu_inherit_prom_mappings()
        - sunami.S: tsunami_copy_1page
      - remove the following unused code:
        - init.c: struct sparc_aliases
      Signed-off-by: NAdrian Bunk <bunk@kernel.org>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      50215d65
  18. 09 2月, 2008 2 次提交
    • M
      CONFIG_HIGHPTE vs. sub-page page tables. · 2f569afd
      Martin Schwidefsky 提交于
      Background: I've implemented 1K/2K page tables for s390.  These sub-page
      page tables are required to properly support the s390 virtualization
      instruction with KVM.  The SIE instruction requires that the page tables
      have 256 page table entries (pte) followed by 256 page status table entries
      (pgste).  The pgstes are only required if the process is using the SIE
      instruction.  The pgstes are updated by the hardware and by the hypervisor
      for a number of reasons, one of them is dirty and reference bit tracking.
      To avoid wasting memory the standard pte table allocation should return
      1K/2K (31/64 bit) and 2K/4K if the process is using SIE.
      
      Problem: Page size on s390 is 4K, page table size is 1K or 2K.  That means
      the s390 version for pte_alloc_one cannot return a pointer to a struct
      page.  Trouble is that with the CONFIG_HIGHPTE feature on x86 pte_alloc_one
      cannot return a pointer to a pte either, since that would require more than
      32 bit for the return value of pte_alloc_one (and the pte * would not be
      accessible since its not kmapped).
      
      Solution: The only solution I found to this dilemma is a new typedef: a
      pgtable_t.  For s390 pgtable_t will be a (pte *) - to be introduced with a
      later patch.  For everybody else it will be a (struct page *).  The
      additional problem with the initialization of the ptl lock and the
      NR_PAGETABLE accounting is solved with a constructor pgtable_page_ctor and
      a destructor pgtable_page_dtor.  The page table allocation and free
      functions need to call these two whenever a page table page is allocated or
      freed.  pmd_populate will get a pgtable_t instead of a struct page pointer.
       To get the pgtable_t back from a pmd entry that has been installed with
      pmd_populate a new function pmd_pgtable is added.  It replaces the pmd_page
      call in free_pte_range and apply_to_pte_range.
      Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: <linux-arch@vger.kernel.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      2f569afd
    • D
      aout: remove unnecessary inclusions of {asm, linux}/a.out.h · 1eb11411
      David Howells 提交于
      Remove now unnecessary inclusions of {asm,linux}/a.out.h.
      
      [akpm@linux-foundation.org: fix alpha build]
      Signed-off-by: NDavid Howells <dhowells@redhat.com>
      Cc: <linux-arch@vger.kernel.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      1eb11411
  19. 22 7月, 2007 1 次提交
  20. 17 7月, 2007 1 次提交
  21. 09 5月, 2007 1 次提交
    • C
      move die notifier handling to common code · 1eeb66a1
      Christoph Hellwig 提交于
      This patch moves the die notifier handling to common code.  Previous
      various architectures had exactly the same code for it.  Note that the new
      code is compiled unconditionally, this should be understood as an appel to
      the other architecture maintainer to implement support for it aswell (aka
      sprinkling a notify_die or two in the proper place)
      
      arm had a notifiy_die that did something totally different, I renamed it to
      arm_notify_die as part of the patch and made it static to the file it's
      declared and used at.  avr32 used to pass slightly less information through
      this interface and I brought it into line with the other architectures.
      
      [akpm@linux-foundation.org: build fix]
      [akpm@linux-foundation.org: fix vmalloc_sync_all bustage]
      [bryan.wu@analog.com: fix vmalloc_sync_all in nommu]
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Cc: <linux-arch@vger.kernel.org>
      Cc: Russell King <rmk@arm.linux.org.uk>
      Signed-off-by: NBryan Wu <bryan.wu@analog.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      1eeb66a1
  22. 12 10月, 2006 1 次提交
    • M
      [SPARC32]: Mark srmmu_nocache_init as __init. · e3096de3
      Martin Habets 提交于
      Fix these 2.6.19-rc1 build warnings from modpost:
      
      WARNING: vmlinux - Section mismatch: reference to .init.text:__alloc_bootmem from .text between 'srmmu_nocache_init' (at offset 0x1a0f8) and 'srmmu_mmu_info'
      WARNING: vmlinux - Section mismatch: reference to .init.text:__alloc_bootmem from .text between 'srmmu_nocache_init' (at offset 0x1a118) and 'srmmu_mmu_info'
      WARNING: vmlinux - Section mismatch: reference to .init.text:srmmu_early_allocate_ptable_skeleton from .text between 'srmmu_nocache_init' (at offset 0x1a188) and 'srmmu_mmu_info'
      Signed-off-by: NMartin Habets <errandir_news@mph.eclipse.co.uk>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e3096de3
  23. 26 9月, 2006 1 次提交
    • D
      [PATCH] Standardize pxx_page macros · 46a82b2d
      Dave McCracken 提交于
      One of the changes necessary for shared page tables is to standardize the
      pxx_page macros.  pte_page and pmd_page have always returned the struct
      page associated with their entry, while pte_page_kernel and pmd_page_kernel
      have returned the kernel virtual address.  pud_page and pgd_page, on the
      other hand, return the kernel virtual address.
      
      Shared page tables needs pud_page and pgd_page to return the actual page
      structures.  There are very few actual users of these functions, so it is
      simple to standardize their usage.
      
      Since this is basic cleanup, I am submitting these changes as a standalone
      patch.  Per Hugh Dickins' comments about it, I am also changing the
      pxx_page_kernel macros to pxx_page_vaddr to clarify their meaning.
      Signed-off-by: NDave McCracken <dmccr@us.ibm.com>
      Cc: Hugh Dickins <hugh@veritas.com>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      46a82b2d
  24. 01 7月, 2006 1 次提交
  25. 24 3月, 2006 1 次提交
    • B
      [SPARC]: Try to start getting SMP back into shape. · a54123e2
      Bob Breuer 提交于
      Todo items:
       - IRQ_INPROGRESS flag - use sparc64 irq buckets, or generic irq_desc?
       - sun4d
       - re-indent large chunks of sun4m_smp.c
       - some places assume sequential cpu numbering (i.e. 0,1 instead of 0,2)
      
      Last I checked (with 2.6.14), random programs segfault with dual
      HyperSPARC.  And with SuperSPARC II's, it seems stable but will
      eventually die from a write lock error (wrong lock owner or something).
      
      I haven't tried the HyperSPARC + highmem combination recently, so that
      may still be a problem.
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      a54123e2
  26. 22 3月, 2006 1 次提交
  27. 04 10月, 2005 1 次提交
  28. 17 4月, 2005 1 次提交
    • L
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds 提交于
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4