1. 02 May, 2011 18 commits
    • Tejun Heo's avatar
      x86, NUMA: Move NUMA init logic from numa_64.c to numa.c · a4106eae
      Tejun Heo authored
      Move the generic 64bit NUMA init machinery from numa_64.c to numa.c.
      
      * node_data[], numa_mem_info and numa_distance
      * numa_add_memblk[_to](), numa_remove_memblk[_from]()
      * numa_set_distance() and friends
      * numa_init() and all the numa_meminfo handling helpers called from it
      * dummy_numa_init()
      * memory_add_physaddr_to_nid()
      
      A new function x86_numa_init() is added and the content of
      numa_64.c::initmem_init() is moved into it.  initmem_init() now simply
      calls x86_numa_init().
      
      Constants and numa_off declaration are moved from numa_{32|64}.h to
      numa.h.
      
      This is code reorganization and doesn't involve any functional change.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      a4106eae
    • Tejun Heo's avatar
      x86-32, NUMA: Update numaq to use new NUMA init protocol · 299a180a
      Tejun Heo authored
      Update numaq such that it calls numa_add_memblk() and sets
      numa_nodes_parsed instead of directly diddling with NUMA states.  The
      original get_memcfg_numaq() is renamed to numaq_numa_init() and new
      get_memcfg_numaq() is created in numa_32.c.
      
      The shim numa_add_memblk() implementation handles node_start/end_pfn[]
      and node_set_online() for nodes with memory.  The new
      get_memcfg_numaq() exactly the same with get_memcfg_from_srat() other
      than calling the numaq init function.  Things get_memcfgs_numaq() do
      are not strictly necessary for numaq but added for consistency and to
      help unifying NUMA init handling.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      299a180a
    • Tejun Heo's avatar
      x86-32, NUMA: Replace srat_32.c with srat.c · 5acd91ab
      Tejun Heo authored
      SRAT support implementation in srat_32.c and srat.c are generally
      similar; however, there are some differences.
      
      First of all, 64bit implementation supports more types of SRAT
      entries.  64bit supports x2apic, affinity, memory and SLIT.  32bit
      only supports processor and memory.
      
      Most other differences stem from different initialization protocols
      employed by 64bit and 32bit NUMA init paths.
      
      On 64bit,
      
      * Mappings among PXM, node and apicid are directly done in each SRAT
        entry callback.
      
      * Memory affinity information is passed to numa_add_memblk() which
        takes care of all interfacing with NUMA init.
      
      * Doesn't directly initialize NUMA configurations.  All the
        information is recorded in numa_nodes_parsed and memblks.
      
      On 32bit,
      
      * Checks numa_off.
      
      * Things go through one more level of indirection via private tables
        but eventually end up initializing the same mappings.
      
      * node_start/end_pfn[] are initialized and
        memblock_x86_register_active_regions() is called for each memory
        chunk.
      
      * node_set_online() is called for each online node.
      
      * sort_node_map() is called.
      
      There are also other minor differences in sanity checking and messages
      but taking 64bit version should be good enough.
      
      This patch drops the 32bit specific implementation and makes the 64bit
      implementation common for both 32 and 64bit.
      
      The init protocol differences are dealt with in two places - the
      numa_add_memblk() shim added in the previous patch and new temporary
      numa_32.c:get_memcfg_from_srat() which wraps invocation of
      x86_acpi_numa_init().
      
      The shim numa_add_memblk() handles the folowings.
      
      * node_start/end_pfn[] initialization.
      
      * node_set_online() for memory nodes.
      
      * Invocation of memblock_x86_register_active_regions().
      
      The shim get_memcfg_from_srat() handles the followings.
      
      * numa_off check.
      
      * node_set_online() for CPU nodes.
      
      * sort_node_map() invocation.
      
      * Clearing of numa_nodes_parsed and active_ranges on failure.
      
      The shims are temporary and will be removed as the generic NUMA init
      path in 32bit is replaced with 64bit one.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      5acd91ab
    • Tejun Heo's avatar
      x86-32, NUMA: implement temporary NUMA init shims · b0d31080
      Tejun Heo authored
      To help transition to common NUMA init, implement temporary 32bit
      shims for numa_add_memblk() and numa_set_distance().
      numa_add_memblk() registers the memblk and adjusts
      node_start/end_pfn[].  numa_set_distance() is noop.
      
      These shims will allow using 64bit NUMA init functions on 32bit and
      gradual transition to common NUMA init path.
      
      For detailed description, please read description of commits which
      make use of the shim functions.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      b0d31080
    • Tejun Heo's avatar
      x86, NUMA: Move numa_nodes_parsed to numa.[hc] · e6df595b
      Tejun Heo authored
      Move numa_nodes_parsed from numa_64.[hc] to numa.[hc] to prepare for
      NUMA init path unification.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      e6df595b
    • Tejun Heo's avatar
      x86-32, NUMA: Move get_memcfg_numa() into numa_32.c · daf4f480
      Tejun Heo authored
      There's no reason get_memcfg_numa() to be implemented inline in
      mmzone_32.h.  Move it to numa_32.c and also make
      get_memcfg_numa_flag() static.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      daf4f480
    • Tejun Heo's avatar
      x86, NUMA: make srat.c 32bit safe · eca9ad31
      Tejun Heo authored
      Make srat.c 32bit safe by removing the assumption that unsigned long
      is 64bit.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      eca9ad31
    • Tejun Heo's avatar
      x86, NUMA: rename srat_64.c to srat.c · 7b2600f8
      Tejun Heo authored
      Rename srat_64.c to srat.c.  This is to prepare for unification of
      NUMA init paths between 32 and 64bit.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      7b2600f8
    • Tejun Heo's avatar
      x86, NUMA: trivial cleanups · 1201e10a
      Tejun Heo authored
      * Kill no longer used struct bootnode.
      
      * Kill dangling declaration of pxm_to_nid() in numa_32.h.
      
      * Make setup_node_bootmem() static.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      1201e10a
    • Tejun Heo's avatar
      x86-32, NUMA: use sparse_memory_present_with_active_regions() · 797390d8
      Tejun Heo authored
      Instead of calling memory_present() for each region from NUMA init,
      call sparse_memory_present_with_active_regions() from paging_init()
      similarly to x86-64.
      
      For flat and numaq, this results in exactly the same memory_present()
      calls.  For srat, if there are multiple memory chunks for a node,
      after this change, memory_present() will be called separately for each
      chunk instead of being called once to encompass the whole range, which
      doesn't cause any harm and actually is the better behavior.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      797390d8
    • Tejun Heo's avatar
      x86-32, NUMA: Make apic->x86_32_numa_cpu_node() optional · 84914ed0
      Tejun Heo authored
      NUMAQ is the only meaningful user of this callback and
      setup_local_APIC() the only callsite.  Stop torturing everyone else by
      making the callback optional and removing all the boilerplate
      implementations and assignments.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      84914ed0
    • Tejun Heo's avatar
      x86, NUMA: Unify 32/64bit numa_cpu_node() implementation · 6bd26273
      Tejun Heo authored
      Currently, the only meaningful user of apic->x86_32_numa_cpu_node() is
      NUMAQ which returns valid mapping only after CPU is initialized during
      SMP bringup; thus, the previous patch to set apicid -> node in
      setup_local_APIC() makes __apicid_to_node[] always contain the correct
      mapping whether custom apic->x86_32_numa_cpu_node() is used or not.
      
      So, there is no reason to keep separate 32bit implementation.  We can
      always consult __apicid_to_node[].  Move 64bit implementation from
      numa_64.c to numa.c and remove 32bit implementation from numa_32.c.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      6bd26273
    • Tejun Heo's avatar
      x86-32, NUMA: Automatically set apicid -> node in setup_local_APIC() · c4b90c11
      Tejun Heo authored
      Some x86-32 NUMA implementations (NUMAQ) don't initialize apicid ->
      node mapping using set_apicid_to_node() during NUMA init but implement
      custom apic->x86_32_numa_cpu_node() instead.
      
      This patch automatically initializes the default apic -> node mapping
      table from apic->x86_32_numa_cpu_node() from setup_local_APIC() such
      that the mapping table is in sync with the actual mapping.
      
      As the table isn't used by custom implementations, this doesn't make
      any difference at this point.  This is in preparation of unifying
      numa_cpu_node() between x86-32 and 64.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      c4b90c11
    • Tejun Heo's avatar
      x86-64, NUMA: simplify nodedata allocation · acd26d61
      Tejun Heo authored
      With top-down memblock allocation, the allocation range limits in
      ealry_node_mem() can be simplified - try node-local first, then any
      node but in any case don't allocate below DMA limit.
      
      Remove early_node_mem() and implement simplified allocation directly
      in setup_node_bootmem().
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      acd26d61
    • Tejun Heo's avatar
      x86-64, NUMA: trivial cleanups for setup_node_bootmem() · ebe685f2
      Tejun Heo authored
      Make the following trivial changes in preparation for further updates.
      
      * nodeid -> nid, nid -> tnid
      * use nd_ prefix for nodedata related variables
      * remove start/end_pfn and use start/end directly
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      ebe685f2
    • Tejun Heo's avatar
      x86-64, NUMA: Simplify hotadd memory handling · 9688678a
      Tejun Heo authored
      The only special handling NUMA needs to do for hotadd memory is
      determining the node for the hotadd memory given the address of it and
      there's nothing specific to specific config method used.
      
      srat_64.c does somewhat elaborate error checking on
      ACPI_SRAT_MEM_HOT_PLUGGABLE regions, remembers them and implements
      memory_add_physaddr_to_nid() which determines the node for given
      hotadd address.
      
      This is almost completely redundant.  All the information is already
      available to the generic NUMA code which already performs all the
      sanity checking and merging.  All that's necessary is not using
      __initdata from numa_meminfo and providing a function which uses it to
      map address to node.
      
      Drop the specific implementation from srat_64.c and add generic
      memory_add_physaddr_to_nid() in numa_64.c, which is enabled if
      CONFIG_MEMORY_HOTPLUG is set.  Other than dropping the code, srat_64.c
      doesn't need any change as it already calls numa_add_memblk() for hot
      pluggable regions which is enough.
      
      While at it, change CONFIG_MEMORY_HOTPLUG_SPARSE in srat_64.c to
      CONFIG_MEMORY_HOTPLUG, for NUMA on x86-64, the two are always the
      same.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      9688678a
    • Tejun Heo's avatar
      Merge branch 'x86/urgent' into x86-mm · ba67cf5c
      Tejun Heo authored
      Merge reason: Pick up the following two fix commits.
      
        2be19102: x86, NUMA: Fix empty memblk detection in numa_cleanup_meminfo()
        765af22d: x86-32, NUMA: Fix ACPI NUMA init broken by recent x86-64 change
      
      Scheduled NUMA init 32/64bit unification changes depend on these.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      ba67cf5c
    • Tejun Heo's avatar
      Merge branch 'x86/numa' into x86-mm · aff36486
      Tejun Heo authored
      Merge reason: Pick up x86-32 remap allocator cleanup changes - 14
      commits, 3fe14ab5^..993ba158.
      
        3fe14ab5: x86-32, numa: Fix failure condition check in alloc_remap()
        993ba158: x86-32, numa: Update remap allocator comments
      
      Scheduled NUMA init 32/64bit unification changes depend on them.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      aff36486
  2. 01 May, 2011 2 commits
  3. 30 Apr, 2011 1 commit
  4. 29 Apr, 2011 14 commits
  5. 28 Apr, 2011 5 commits