mirror of
https://github.com/torvalds/linux.git
synced 2024-12-16 08:02:17 +00:00
e70b091512
Macro arch_provides_topology_pointers is pointless now, remove it. Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Cc: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/*
|
|
* Copyright 2010 Tilera Corporation. All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation, version 2.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
|
* NON INFRINGEMENT. See the GNU General Public License for
|
|
* more details.
|
|
*/
|
|
|
|
#ifndef _ASM_TILE_TOPOLOGY_H
|
|
#define _ASM_TILE_TOPOLOGY_H
|
|
|
|
#ifdef CONFIG_NUMA
|
|
|
|
#include <linux/cpumask.h>
|
|
|
|
/* Mappings between logical cpu number and node number. */
|
|
extern struct cpumask node_2_cpu_mask[];
|
|
extern char cpu_2_node[];
|
|
|
|
/* Returns the number of the node containing CPU 'cpu'. */
|
|
static inline int cpu_to_node(int cpu)
|
|
{
|
|
return cpu_2_node[cpu];
|
|
}
|
|
|
|
/*
|
|
* Returns the number of the node containing Node 'node'.
|
|
* This architecture is flat, so it is a pretty simple function!
|
|
*/
|
|
#define parent_node(node) (node)
|
|
|
|
/* Returns a bitmask of CPUs on Node 'node'. */
|
|
static inline const struct cpumask *cpumask_of_node(int node)
|
|
{
|
|
return &node_2_cpu_mask[node];
|
|
}
|
|
|
|
/* For now, use numa node -1 for global allocation. */
|
|
#define pcibus_to_node(bus) ((void)(bus), -1)
|
|
|
|
/*
|
|
* TILE architecture has many cores integrated in one processor, so we need
|
|
* setup bigger balance_interval for both CPU/NODE scheduling domains to
|
|
* reduce process scheduling costs.
|
|
*/
|
|
|
|
/* sched_domains SD_CPU_INIT for TILE architecture */
|
|
#define SD_CPU_INIT (struct sched_domain) { \
|
|
.min_interval = 4, \
|
|
.max_interval = 128, \
|
|
.busy_factor = 64, \
|
|
.imbalance_pct = 125, \
|
|
.cache_nice_tries = 1, \
|
|
.busy_idx = 2, \
|
|
.idle_idx = 1, \
|
|
.newidle_idx = 0, \
|
|
.wake_idx = 0, \
|
|
.forkexec_idx = 0, \
|
|
\
|
|
.flags = 1*SD_LOAD_BALANCE \
|
|
| 1*SD_BALANCE_NEWIDLE \
|
|
| 1*SD_BALANCE_EXEC \
|
|
| 1*SD_BALANCE_FORK \
|
|
| 0*SD_BALANCE_WAKE \
|
|
| 0*SD_WAKE_AFFINE \
|
|
| 0*SD_SHARE_CPUPOWER \
|
|
| 0*SD_SHARE_PKG_RESOURCES \
|
|
| 0*SD_SERIALIZE \
|
|
, \
|
|
.last_balance = jiffies, \
|
|
.balance_interval = 32, \
|
|
}
|
|
|
|
/* By definition, we create nodes based on online memory. */
|
|
#define node_has_online_mem(nid) 1
|
|
|
|
#endif /* CONFIG_NUMA */
|
|
|
|
#include <asm-generic/topology.h>
|
|
|
|
#ifdef CONFIG_SMP
|
|
#define topology_physical_package_id(cpu) ((void)(cpu), 0)
|
|
#define topology_core_id(cpu) (cpu)
|
|
#define topology_core_cpumask(cpu) ((void)(cpu), cpu_online_mask)
|
|
#define topology_thread_cpumask(cpu) cpumask_of(cpu)
|
|
#endif
|
|
|
|
#endif /* _ASM_TILE_TOPOLOGY_H */
|