c81b812a33
pcibus_to_node can return -1 if we cannot determine which node a pci bus is on. If passed -1, cpumask_of_node will negatively index the lookup array and pull in random data: # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus 00000000,00000003,00000000,00000000 # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist 64-65 Change cpumask_of_node to check for -1 and return cpu_all_mask in this case: # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus ffffffff,ffffffff,ffffffff,ffffffff # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist 0-127 Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
107 lines
2.3 KiB
C
107 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)
|
|
|
|
#define cpumask_of_node(node) ((node) == -1 ? \
|
|
cpu_all_mask : \
|
|
&numa_cpumask_lookup_table[node])
|
|
|
|
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 cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
|
|
cpu_all_mask : \
|
|
cpumask_of_node(pcibus_to_node(bus)))
|
|
|
|
/* sched_domains SD_NODE_INIT for PPC64 machines */
|
|
#define SD_NODE_INIT (struct sched_domain) { \
|
|
.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 = 0, \
|
|
.wake_idx = 0, \
|
|
.flags = SD_LOAD_BALANCE \
|
|
| SD_BALANCE_EXEC \
|
|
| SD_BALANCE_FORK \
|
|
| SD_BALANCE_NEWIDLE \
|
|
| SD_SERIALIZE, \
|
|
.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)
|
|
{
|
|
}
|
|
|
|
#endif /* CONFIG_NUMA */
|
|
|
|
#include <asm-generic/topology.h>
|
|
|
|
#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_cpumask(cpu) (&per_cpu(cpu_sibling_map, cpu))
|
|
#define topology_core_cpumask(cpu) (&per_cpu(cpu_core_map, cpu))
|
|
#define topology_core_id(cpu) (cpu_to_core_id(cpu))
|
|
#endif
|
|
#endif
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ASM_POWERPC_TOPOLOGY_H */
|