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* sched, cpuset: customize sched domains, coreHidetoshi Seto2008-04-19
| | | | | | | | | | | | | | | | | | [rebased for sched-devel/latest] - Add a new cpuset file, having levels: sched_relax_domain_level - Modify partition_sched_domains() and build_sched_domains() to take attributes parameter passed from cpuset. - Fill newidle_idx for node domains which currently unused but might be required if sched_relax_domain_level become higher. - We can change the default level by boot option 'relax_domain_level='. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* cpumask: reduce stack usage in SD_x_INIT initializersMike Travis2008-04-19
| | | | | | | | | | | | | | | | | | | * Remove empty cpumask_t (and all non-zero/non-null) variables in SD_*_INIT macros. Use memset(0) to clear. Also, don't inline the initializer functions to save on stack space in build_sched_domains(). * Merge change to include/linux/topology.h that uses the new node_to_cpumask_ptr function in the nr_cpus_node macro into this patch. Depends on: [mm-patch]: asm-generic-add-node_to_cpumask_ptr-macro.patch [sched-devel]: sched: add new set_cpus_allowed_ptr function Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* asm-generic: add node_to_cpumask_ptr macroMike Travis2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Create a simple macro to always return a pointer to the node_to_cpumask(node) value. This relies on compiler optimization to remove the extra indirection: #define node_to_cpumask_ptr(v, node) \ cpumask_t _##v = node_to_cpumask(node), *v = &_##v For those systems with a large cpumask size, then a true pointer to the array element can be used: #define node_to_cpumask_ptr(v, node) \ cpumask_t *v = &(node_to_cpumask_map[node]) A node_to_cpumask_ptr_next() macro is provided to access another node_to_cpumask value. The other change is to always include asm-generic/topology.h moving the ifdef CONFIG_NUMA to this same file. Note: there are no references to either of these new macros in this patch, only the definition. Based on 2.6.25-rc5-mm1 # alpha Cc: Richard Henderson <rth@twiddle.net> # fujitsu Cc: David Howells <dhowells@redhat.com> # ia64 Cc: Tony Luck <tony.luck@intel.com> # powerpc Cc: Paul Mackerras <paulus@samba.org> Cc: Anton Blanchard <anton@samba.org> # sparc Cc: David S. Miller <davem@davemloft.net> Cc: William L. Irwin <wli@holomorphy.com> # x86 Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: clean up non-smp usage of cpu mapsMike Travis2008-04-17
| | | | | | | | | | Cleanup references to the early cpu maps for the non-SMP configuration and remove some functions called for SMP configurations only. Cc: Andi Kleen <ak@suse.de> Cc: Christoph Lameter <clameter@sgi.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* include/asm-x86/topology.h: checkpatch cleanups - formatting onlyJoe Perches2008-04-17
| | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: make node to apic mapping declarations unconditionalGlauber de Oliveira Costa2008-04-17
| | | | | | | | Instead of declaring them inside of X86_64 ifdef, do it unconditionally Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: change size of node ids from u8 to s16travis@sgi.com2008-01-30
| | | | | | | | | | | | | | Change the size of node ids for X86_64 from u8 to s16 to accomodate more than 32k nodes and allow for NUMA_NO_NODE (-1) to be sign extended to int. Cc: David Rientjes <rientjes@google.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Mike Travis <travis@sgi.com> Reviewed-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: fix early cpu_to_node panic from nr_free_zone_pagesMike Travis2008-01-30
| | | | | | | | | | | | | | | | | | call early_cpu_to_node() since per_cpu(cpu_to_node_map) might not be setup yet. I also had to export x86_cpu_to_node_map_early_ptr because of some calls from the network code to numa_node_id(): net/ipv4/netfilter/arp_tables.c: net/ipv4/netfilter/ip_tables.c: net/ipv4/netfilter/ip_tables.c: Signed-off-by: Mike Travis <travis@sgi.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: add debug of invalid per_cpu map accessesIngo Molnar2008-01-30
| | | | | | | dont crash survivable situations. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: add debug of invalid per_cpu map accessestravis@sgi.com2008-01-30
| | | | | | | | | Provide a means to trap usages of per_cpu map variables before they are setup. Define CONFIG_DEBUG_PER_CPU_MAPS to activate. Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: change NR_CPUS arrays in numa_64 fixuptravis@sgi.com2008-01-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change the following static arrays sized by NR_CPUS to per_cpu data variables: char cpu_to_node_map[NR_CPUS]; fixup: - Split cpu_to_node function into "early" and "late" versions so that x86_cpu_to_node_map_early_ptr is not EXPORT'ed and the cpu_to_node inline function is more streamlined. - This also involves setting up the percpu maps as early as possible. - Fix X86_32 NUMA build errors that previous version of this patch caused. V2->V3: - add early_cpu_to_node function to keep cpu_to_node efficient - move and rename smp_set_apicids() to setup_percpu_maps() - call setup_percpu_maps() as early as possible V1->V2: - Removed extraneous casts - Fix !NUMA builds with '#ifdef CONFIG_NUMA" Signed-off-by: Mike Travis <travis@sgi.com> Reviewed-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* arch/x86/mm/numa_64.c: section fixAndrew Morton2008-01-30
| | | | | | | | | | | WARNING: vmlinux.o(__ksymtab+0x670): Section mismatch: reference to .init.data:x86_cpu_to_node_map_init (between '__ksymtab_x86_cpu_to_node_map_init' and '__ksymtab_node_data') Cc: Matthew Dobson <colpatch@us.ibm.com> Cc: Mike Travis <travis@sgi.com> Cc: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: reduce memory and intra-node effectsMike Travis2008-01-30
| | | | | Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: change NR_CPUS arrays in numa_64travis@sgi.com2008-01-30
| | | | | | | | | | | | Change the following static arrays sized by NR_CPUS to per_cpu data variables: char cpu_to_node_map[NR_CPUS]; Signed-off-by: Mike Travis <travis@sgi.com> Reviewed-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: change size of node ids from u8 to u16travis@sgi.com2008-01-30
| | | | | | | | | | Change the size of node ids from 8 bits to 16 bits to accomodate more than 256 nodes. Signed-off-by: Mike Travis <travis@sgi.com> Reviewed-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: merge topology.h variantsThomas Gleixner2008-01-30
| | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* i386/x86_64: move headers to include/asm-x86Thomas Gleixner2007-10-11
Move the headers to include/asm-x86 and fixup the header install make rules Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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