mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 23:05:23 +07:00
aa6b54461c
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>
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)
|
|
{
|
|
}
|
|
|
|
#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_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
|
|
#endif
|
|
#endif
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ASM_POWERPC_TOPOLOGY_H */
|