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path: root/drivers/acpi/numa.c
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2007-07-21x86_64: fake pxm-to-node mapping for fake numaDavid Rientjes1-4/+7
For NUMA emulation, our SLIT should represent the true NUMA topology of the system but our proximity domain to node ID mapping needs to reflect the emulated state. When NUMA emulation has successfully setup fake nodes on the system, a new function, acpi_fake_nodes() is called. This function determines the proximity domain (_PXM) for each true node found on the system. It then finds which emulated nodes have been allocated on this true node as determined by its starting address. The node ID to PXM mapping is changed so that each fake node ID points to the PXM of the true node that it is located on. If the machine failed to register a SLIT, then we assume there is no special requirement for emulated node affinity so we use the default LOCAL_DISTANCE, which is newly exported to this code, as our measurement if the emulated nodes appear in the same PXM. Otherwise, we use REMOTE_DISTANCE. PXM_INVAL and NID_INVAL are also exported to the ACPI header file so that we can compare node_to_pxm() results in generic code (in this case, the SRAT code). Cc: Len Brown <lenb@kernel.org> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: various cleanups in NUMA scan nodeDavid Rientjes1-10/+10
In acpi_scan_nodes(), we immediately return -1 if acpi_numa <= 0, meaning we haven't detected any underlying ACPI topology or we have explicitly disabled its use from the command-line with numa=noacpi. acpi_table_print_srat_entry() and acpi_table_parse_srat() are only referenced within drivers/acpi/numa.c, so we can mark them as static and remove their prototypes from the header file. Likewise, pxm_to_node_map[] and node_to_pxm_map[] are only used within drivers/acpi/numa.c, so we mark them as static and remove their externs from the header file. The automatic 'result' variable is unused in acpi_numa_init(), so it's removed. Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-02ACPI: Section mismatch ... acpi_map_pxm_to_nodeLuck, Tony1-1/+1
Last of the "Section mismatch" errors from ia64 builds! acpi_map_pxm_to_node() is defined with attribute __cpuinit, but is called by "normal" kernel functions acpi_getnode() and acpi_map_cpu2node(). Commit f363d16fbb9374c0bd7f2757d412c287169094c9 moved the data structures on which this routine operates from __cpuinitdata to regular memory, so this routine can also move out of init space. Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-05-17acpi: fix potential call to a freed memory section.Aaron Durbin1-4/+4
Strip __cpuinit[data] from Node <-> PXM routines and supporting data structures. Also make pxm_to_node_map and node_to_pxm_map local to the numa acpi module. This fixes a bug triggered by the following conditions: - boot on a machine with a SLIT table defined - kernel is configured w/ CONFIG_HOTPLUG_CPU=n - cat /sys/devices/system/node/node*/distance This will cause an oops by calling into a freed memory section. In particular, on x86_64, __node_distance calls node_to_pxm(). Signed-off-by: Aaron Durbin <adurbin@google.com> Cc: Len Brown <lenb@kernel.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Fix unnecesary meminitYasunori Goto1-2/+2
This is to fix unnecessary __meminit definition. These are exported for kernel modules. I compiled on ia64/x86-64 with memory hotplug on/off. Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Fix section mismatch of memory hotplug related code.Yasunori Goto1-2/+2
This is to fix many section mismatches of code related to memory hotplug. I checked compile with memory hotplug on/off on ia64 and x86-64 box. Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-13ACPI: acpi_table_parse_madt_family() is not MADT specificLen Brown1-7/+1
acpi_table_parse_madt_family() is also used to parse SRAT entries. So re-name it to acpi_table_parse_entries(), and re-name the madt-specific variables within it accordingly. cosmetic only. Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-13ACPI: acpi_madt_entry_handler() is not MADT specificLen Brown1-2/+2
acpi_madt_entry_handler() is also used for the SRAT, so re-name it acpi_table_entry_handler(). cosmetic only. Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-13ACPI: acpi_table_parse() now returns success/fail, not countLen Brown1-4/+2
Returning count for tables that are supposed to be unique was useless and confusing. Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-12ACPI: clean up ACPI_MODULE_NAME() useLen Brown1-1/+1
cosmetic only Make "module name" actually match the file name. Invoke with ';' as leaving it off confuses Lindent and gcc doesn't care. Fix indentation where Lindent did get confused. Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-02ACPICA: Remove duplicate table definitions (non-conflicting), contAlexey Starikovskiy1-39/+38
Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14ACPI: Remove unnecessary from/to-void* and to-void casts in drivers/acpiJan Engelhardt1-1/+1
Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Len Brown <len.brown@intel.com>
2006-07-01ACPI: remove function tracing macros from drivers/acpi/*.cLen Brown1-3/+1
a few invocations appeared due to the SBS and other patches. Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel1-1/+0
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-27[PATCH] pgdat allocation for new node add (get node id by acpi)Yasunori Goto1-1/+14
This is to find node id from acpi's handle of memory_device in DSDT. _PXM for the new node can be found by acpi_get_pxm() by using new memory's handle. So, node id can be found by pxm_to_nid_map[]. This patch becomes simpler than v2 of node hot-add patch. Because old add_memory() function doesn't have node id parameter. So, kernel must find its handle by physical address via DSDT again. But, v3 just give node id to add_memory() now. Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: "Brown, Len" <len.brown@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-23[PATCH] Unify pxm_to_node() and node_to_pxm()Yasunori Goto1-0/+48
Consolidate the various arch-specific implementations of pxm_to_node() and node_to_pxm() into a single generic version. Signed-off-by: Yasunori 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: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-05[ACPI] Lindent all ACPI filesLen Brown1-64/+61
Signed-off-by: Len Brown <len.brown@intel.com>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+213
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!
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