d5a7430ddc
Convert cpu_sibling_map from a static array sized by NR_CPUS to a per_cpu variable. This saves sizeof(cpumask_t) * NR unused cpus. Access is mostly from startup and CPU HOTPLUG functions. Signed-off-by: Mike Travis <travis@sgi.com> Cc: Andi Kleen <ak@suse.de> Cc: Christoph Lameter <clameter@sgi.com> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
116 lines
2.3 KiB
C
116 lines
2.3 KiB
C
#ifndef _ASM_POWERPC_TOPOLOGY_H
|
|
#define _ASM_POWERPC_TOPOLOGY_H
|
|
#ifdef __KERNEL__
|
|
|
|
|
|
struct sys_device;
|
|
struct device_node;
|
|
|
|
#ifdef CONFIG_NUMA
|
|
|
|
#include <asm/mmzone.h>
|
|
|
|
static inline int cpu_to_node(int cpu)
|
|
{
|
|
return numa_cpu_lookup_table[cpu];
|
|
}
|
|
|
|
#define parent_node(node) (node)
|
|
|
|
static inline cpumask_t node_to_cpumask(int node)
|
|
{
|
|
return numa_cpumask_lookup_table[node];
|
|
}
|
|
|
|
static inline int node_to_first_cpu(int node)
|
|
{
|
|
cpumask_t tmp;
|
|
tmp = node_to_cpumask(node);
|
|
return first_cpu(tmp);
|
|
}
|
|
|
|
int of_node_to_nid(struct device_node *device);
|
|
|
|
struct pci_bus;
|
|
#ifdef CONFIG_PCI
|
|
extern int pcibus_to_node(struct pci_bus *bus);
|
|
#else
|
|
static inline int pcibus_to_node(struct pci_bus *bus)
|
|
{
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
#define pcibus_to_cpumask(bus) (pcibus_to_node(bus) == -1 ? \
|
|
CPU_MASK_ALL : \
|
|
node_to_cpumask(pcibus_to_node(bus)) \
|
|
)
|
|
|
|
/* sched_domains SD_NODE_INIT for PPC64 machines */
|
|
#define SD_NODE_INIT (struct sched_domain) { \
|
|
.span = CPU_MASK_NONE, \
|
|
.parent = NULL, \
|
|
.child = NULL, \
|
|
.groups = NULL, \
|
|
.min_interval = 8, \
|
|
.max_interval = 32, \
|
|
.busy_factor = 32, \
|
|
.imbalance_pct = 125, \
|
|
.cache_nice_tries = 1, \
|
|
.busy_idx = 3, \
|
|
.idle_idx = 1, \
|
|
.newidle_idx = 2, \
|
|
.wake_idx = 1, \
|
|
.flags = SD_LOAD_BALANCE \
|
|
| SD_BALANCE_EXEC \
|
|
| SD_BALANCE_NEWIDLE \
|
|
| SD_WAKE_IDLE \
|
|
| SD_SERIALIZE \
|
|
| SD_WAKE_BALANCE, \
|
|
.last_balance = jiffies, \
|
|
.balance_interval = 1, \
|
|
.nr_balance_failed = 0, \
|
|
}
|
|
|
|
extern void __init dump_numa_cpu_topology(void);
|
|
|
|
extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
|
|
extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
|
|
|
|
#else
|
|
|
|
static inline int of_node_to_nid(struct device_node *device)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void dump_numa_cpu_topology(void) {}
|
|
|
|
static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void sysfs_remove_device_from_node(struct sys_device *dev,
|
|
int nid)
|
|
{
|
|
}
|
|
|
|
|
|
#include <asm-generic/topology.h>
|
|
|
|
#endif /* CONFIG_NUMA */
|
|
|
|
#ifdef CONFIG_SMP
|
|
#include <asm/cputable.h>
|
|
#define smt_capable() (cpu_has_feature(CPU_FTR_SMT))
|
|
|
|
#ifdef CONFIG_PPC64
|
|
#include <asm/smp.h>
|
|
|
|
#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
|
|
#endif
|
|
#endif
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ASM_POWERPC_TOPOLOGY_H */
|