1. 30 6月, 2006 4 次提交
    • I
      [PATCH] genirq: cleanup: remove irq_descp() · a8553acd
      Ingo Molnar 提交于
      Cleanup: remove irq_descp() - explicit use of irq_desc[] is shorter and more
      readable.
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      a8553acd
    • I
      [PATCH] genirq: cleanup: merge irq_affinity[] into irq_desc[] · a53da52f
      Ingo Molnar 提交于
      Consolidation: remove the irq_affinity[NR_IRQS] array and move it into the
      irq_desc[NR_IRQS].affinity field.
      
      [akpm@osdl.org: sparc64 build fix]
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      a53da52f
    • I
      [PATCH] genirq: rename desc->handler to desc->chip · d1bef4ed
      Ingo Molnar 提交于
      This patch-queue improves the generic IRQ layer to be truly generic, by adding
      various abstractions and features to it, without impacting existing
      functionality.
      
      While the queue can be best described as "fix and improve everything in the
      generic IRQ layer that we could think of", and thus it consists of many
      smaller features and lots of cleanups, the one feature that stands out most is
      the new 'irq chip' abstraction.
      
      The irq-chip abstraction is about describing and coding and IRQ controller
      driver by mapping its raw hardware capabilities [and quirks, if needed] in a
      straightforward way, without having to think about "IRQ flow"
      (level/edge/etc.) type of details.
      
      This stands in contrast with the current 'irq-type' model of genirq
      architectures, which 'mixes' raw hardware capabilities with 'flow' details.
      The patchset supports both types of irq controller designs at once, and
      converts i386 and x86_64 to the new irq-chip design.
      
      As a bonus side-effect of the irq-chip approach, chained interrupt controllers
      (master/slave PIC constructs, etc.) are now supported by design as well.
      
      The end result of this patchset intends to be simpler architecture-level code
      and more consolidation between architectures.
      
      We reused many bits of code and many concepts from Russell King's ARM IRQ
      layer, the merging of which was one of the motivations for this patchset.
      
      This patch:
      
      rename desc->handler to desc->chip.
      
      Originally i did not want to do this, because it's a big patch.  But having
      both "desc->handler", "desc->handle_irq" and "action->handler" caused a
      large degree of confusion and made the code appear alot less clean than it
      truly is.
      
      I have also attempted a dual approach as well by introducing a
      desc->chip alias - but that just wasnt robust enough and broke
      frequently.
      
      So lets get over with this quickly.  The conversion was done automatically
      via scripts and converts all the code in the kernel.
      
      This renaming patch is the first one amongst the patches, so that the
      remaining patches can stay flexible and can be merged and split up
      without having some big monolithic patch act as a merge barrier.
      
      [akpm@osdl.org: build fix]
      [akpm@osdl.org: another build fix]
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      d1bef4ed
    • Y
      [PATCH] solve config broken: undefined reference to `online_page' · cc57637b
      Yasunori Goto 提交于
      Memory hotplug code of i386 adds memory to only highmem.  So, if
      CONFIG_HIGHMEM is not set, CONFIG_MEMORY_HOTPLUG shouldn't be set.
      Otherwise, it causes compile error.
      
      In addition, many architecture can't use memory hotplug feature yet.  So, I
      introduce CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG.
      Signed-off-by: NYasunori Goto <y-goto@jp.fujitsu.com>
      Cc: <stable@kernel.org>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      cc57637b
  2. 29 6月, 2006 4 次提交
  3. 28 6月, 2006 11 次提交
  4. 27 6月, 2006 2 次提交
  5. 26 6月, 2006 2 次提交
  6. 24 6月, 2006 1 次提交
  7. 23 6月, 2006 6 次提交
    • J
      [PATCH] clean up default value of SCHED_SMT · 1e11d278
      Jean-Luc Leger 提交于
      Default values for boolean and tristate options can only be 'y', 'm' or 'n'.
      This patch removes wrong default for SCHED_SMT.
      Signed-off-by: NJean-Luc Leger <jean-luc.leger@dspnet.fr.eu.org>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      1e11d278
    • M
      [PATCH] vfs: add lock owner argument to flush operation · 75e1fcc0
      Miklos Szeredi 提交于
      Pass the POSIX lock owner ID to the flush operation.
      
      This is useful for filesystems which don't want to store any locking state
      in inode->i_flock but want to handle locking/unlocking POSIX locks
      internally.  FUSE is one such filesystem but I think it possible that some
      network filesystems would need this also.
      
      Also add a flag to indicate that a POSIX locking request was generated by
      close(), so filesystems using the above feature won't send an extra locking
      request in this case.
      Signed-off-by: NMiklos Szeredi <miklos@szeredi.hu>
      Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      75e1fcc0
    • C
      [PATCH] page migration: sys_move_pages(): support moving of individual pages · 742755a1
      Christoph Lameter 提交于
      move_pages() is used to move individual pages of a process. The function can
      be used to determine the location of pages and to move them onto the desired
      node. move_pages() returns status information for each page.
      
      long move_pages(pid, number_of_pages_to_move,
      		addresses_of_pages[],
      		nodes[] or NULL,
      		status[],
      		flags);
      
      The addresses of pages is an array of void * pointing to the
      pages to be moved.
      
      The nodes array contains the node numbers that the pages should be moved
      to. If a NULL is passed instead of an array then no pages are moved but
      the status array is updated. The status request may be used to determine
      the page state before issuing another move_pages() to move pages.
      
      The status array will contain the state of all individual page migration
      attempts when the function terminates. The status array is only valid if
      move_pages() completed successfullly.
      
      Possible page states in status[]:
      
      0..MAX_NUMNODES	The page is now on the indicated node.
      
      -ENOENT		Page is not present
      
      -EACCES		Page is mapped by multiple processes and can only
      		be moved if MPOL_MF_MOVE_ALL is specified.
      
      -EPERM		The page has been mlocked by a process/driver and
      		cannot be moved.
      
      -EBUSY		Page is busy and cannot be moved. Try again later.
      
      -EFAULT		Invalid address (no VMA or zero page).
      
      -ENOMEM		Unable to allocate memory on target node.
      
      -EIO		Unable to write back page. The page must be written
      		back in order to move it since the page is dirty and the
      		filesystem does not provide a migration function that
      		would allow the moving of dirty pages.
      
      -EINVAL		A dirty page cannot be moved. The filesystem does not provide
      		a migration function and has no ability to write back pages.
      
      The flags parameter indicates what types of pages to move:
      
      MPOL_MF_MOVE	Move pages that are only mapped by the process.
      
      MPOL_MF_MOVE_ALL Also move pages that are mapped by multiple processes.
      		Requires sufficient capabilities.
      
      Possible return codes from move_pages()
      
      -ENOENT		No pages found that would require moving. All pages
      		are either already on the target node, not present, had an
      		invalid address or could not be moved because they were
      		mapped by multiple processes.
      
      -EINVAL		Flags other than MPOL_MF_MOVE(_ALL) specified or an attempt
      		to migrate pages in a kernel thread.
      
      -EPERM		MPOL_MF_MOVE_ALL specified without sufficient priviledges.
      		or an attempt to move a process belonging to another user.
      
      -EACCES		One of the target nodes is not allowed by the current cpuset.
      
      -ENODEV		One of the target nodes is not online.
      
      -ESRCH		Process does not exist.
      
      -E2BIG		Too many pages to move.
      
      -ENOMEM		Not enough memory to allocate control array.
      
      -EFAULT		Parameters could not be accessed.
      
      A test program for move_pages() may be found with the patches
      on ftp.kernel.org:/pub/linux/kernel/people/christoph/pmig/patches-2.6.17-rc4-mm3
      
      From: Christoph Lameter <clameter@sgi.com>
      
        Detailed results for sys_move_pages()
      
        Pass a pointer to an integer to get_new_page() that may be used to
        indicate where the completion status of a migration operation should be
        placed.  This allows sys_move_pags() to report back exactly what happened to
        each page.
      
        Wish there would be a better way to do this. Looks a bit hacky.
      Signed-off-by: NChristoph Lameter <clameter@sgi.com>
      Cc: Hugh Dickins <hugh@veritas.com>
      Cc: Jes Sorensen <jes@trained-monkey.org>
      Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
      Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
      Cc: Andi Kleen <ak@muc.de>
      Cc: Michael Kerrisk <mtk-manpages@gmx.net>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      742755a1
    • D
      [PATCH] change gen_pool allocator to not touch managed memory · 929f9727
      Dean Nelson 提交于
      Modify the gen_pool allocator (lib/genalloc.c) to utilize a bitmap scheme
      instead of the buddy scheme.  The purpose of this change is to eliminate
      the touching of the actual memory being allocated.
      
      Since the change modifies the interface, a change to the uncached allocator
      (arch/ia64/kernel/uncached.c) is also required.
      
      Both Andrey Volkov and Jes Sorenson have expressed a desire that the
      gen_pool allocator not write to the memory being managed. See the
      following:
      
        http://marc.theaimsgroup.com/?l=linux-kernel&m=113518602713125&w=2
        http://marc.theaimsgroup.com/?l=linux-kernel&m=113533568827916&w=2Signed-off-by: NDean Nelson <dcn@sgi.com>
      Cc: Andrey Volkov <avolkov@varma-el.com>
      Acked-by: NJes Sorensen <jes@trained-monkey.org>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      929f9727
    • Y
      [PATCH] Unify pxm_to_node() and node_to_pxm() · 762834e8
      Yasunori Goto 提交于
      Consolidate the various arch-specific implementations of pxm_to_node() and
      node_to_pxm() into a single generic version.
      Signed-off-by: NYasunori Goto <y-goto@jp.fujitsu.com>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: Andi Kleen <ak@muc.de>
      Cc: Dave Hansen <haveblue@us.ibm.com>
      Cc: "Brown, Len" <len.brown@intel.com>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      762834e8
    • D
      [PATCH] VFS: Permit filesystem to override root dentry on mount · 454e2398
      David Howells 提交于
      Extend the get_sb() filesystem operation to take an extra argument that
      permits the VFS to pass in the target vfsmount that defines the mountpoint.
      
      The filesystem is then required to manually set the superblock and root dentry
      pointers.  For most filesystems, this should be done with simple_set_mnt()
      which will set the superblock pointer and then set the root dentry to the
      superblock's s_root (as per the old default behaviour).
      
      The get_sb() op now returns an integer as there's now no need to return the
      superblock pointer.
      
      This patch permits a superblock to be implicitly shared amongst several mount
      points, such as can be done with NFS to avoid potential inode aliasing.  In
      such a case, simple_set_mnt() would not be called, and instead the mnt_root
      and mnt_sb would be set directly.
      
      The patch also makes the following changes:
      
       (*) the get_sb_*() convenience functions in the core kernel now take a vfsmount
           pointer argument and return an integer, so most filesystems have to change
           very little.
      
       (*) If one of the convenience function is not used, then get_sb() should
           normally call simple_set_mnt() to instantiate the vfsmount. This will
           always return 0, and so can be tail-called from get_sb().
      
       (*) generic_shutdown_super() now calls shrink_dcache_sb() to clean up the
           dcache upon superblock destruction rather than shrink_dcache_anon().
      
           This is required because the superblock may now have multiple trees that
           aren't actually bound to s_root, but that still need to be cleaned up. The
           currently called functions assume that the whole tree is rooted at s_root,
           and that anonymous dentries are not the roots of trees which results in
           dentries being left unculled.
      
           However, with the way NFS superblock sharing are currently set to be
           implemented, these assumptions are violated: the root of the filesystem is
           simply a dummy dentry and inode (the real inode for '/' may well be
           inaccessible), and all the vfsmounts are rooted on anonymous[*] dentries
           with child trees.
      
           [*] Anonymous until discovered from another tree.
      
       (*) The documentation has been adjusted, including the additional bit of
           changing ext2_* into foo_* in the documentation.
      
      [akpm@osdl.org: convert ipath_fs, do other stuff]
      Signed-off-by: NDavid Howells <dhowells@redhat.com>
      Acked-by: NAl Viro <viro@zeniv.linux.org.uk>
      Cc: Nathan Scott <nathans@sgi.com>
      Cc: Roland Dreier <rolandd@cisco.com>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      454e2398
  8. 22 6月, 2006 10 次提交