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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-x86_64/topology.h | |
download | linux-fsl-qoriq-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
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!
Diffstat (limited to 'include/asm-x86_64/topology.h')
-rw-r--r-- | include/asm-x86_64/topology.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/include/asm-x86_64/topology.h b/include/asm-x86_64/topology.h new file mode 100644 index 0000000..67f24e0 --- /dev/null +++ b/include/asm-x86_64/topology.h @@ -0,0 +1,68 @@ +#ifndef _ASM_X86_64_TOPOLOGY_H +#define _ASM_X86_64_TOPOLOGY_H + +#include <linux/config.h> + +#ifdef CONFIG_DISCONTIGMEM + +#include <asm/mpspec.h> +#include <asm/bitops.h> + +/* Map the K8 CPU local memory controllers to a simple 1:1 CPU:NODE topology */ + +extern cpumask_t cpu_online_map; + +extern unsigned char cpu_to_node[]; +extern cpumask_t node_to_cpumask[]; +extern cpumask_t pci_bus_to_cpumask[]; + +#ifdef CONFIG_ACPI_NUMA +extern int __node_distance(int, int); +#define node_distance(a,b) __node_distance(a,b) +/* #else fallback version */ +#endif + +#define cpu_to_node(cpu) (cpu_to_node[cpu]) +#define parent_node(node) (node) +#define node_to_first_cpu(node) (__ffs(node_to_cpumask[node])) +#define node_to_cpumask(node) (node_to_cpumask[node]) + +static inline cpumask_t __pcibus_to_cpumask(int bus) +{ + cpumask_t busmask = pci_bus_to_cpumask[bus]; + cpumask_t online = cpu_online_map; + cpumask_t res; + cpus_and(res, busmask, online); + return res; +} +#define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus->number) + +#ifdef CONFIG_NUMA +/* sched_domains SD_NODE_INIT for x86_64 machines */ +#define SD_NODE_INIT (struct sched_domain) { \ + .span = CPU_MASK_NONE, \ + .parent = NULL, \ + .groups = NULL, \ + .min_interval = 8, \ + .max_interval = 32, \ + .busy_factor = 32, \ + .imbalance_pct = 125, \ + .cache_hot_time = (10*1000000), \ + .cache_nice_tries = 1, \ + .per_cpu_gain = 100, \ + .flags = SD_LOAD_BALANCE \ + | SD_BALANCE_NEWIDLE \ + | SD_BALANCE_EXEC \ + | SD_WAKE_IDLE \ + | SD_WAKE_BALANCE, \ + .last_balance = jiffies, \ + .balance_interval = 1, \ + .nr_balance_failed = 0, \ +} +#endif + +#endif + +#include <asm-generic/topology.h> + +#endif |