diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-i386/topology.h | 5 | ||||
| -rw-r--r-- | include/asm-ia64/topology.h | 1 | ||||
| -rw-r--r-- | include/asm-powerpc/topology.h | 5 | ||||
| -rw-r--r-- | include/asm-sparc64/topology.h | 3 | ||||
| -rw-r--r-- | include/asm-x86_64/topology.h | 2 | ||||
| -rw-r--r-- | include/linux/sched.h | 10 | ||||
| -rw-r--r-- | include/linux/topology.h | 3 |
7 files changed, 28 insertions, 1 deletions
diff --git a/include/asm-i386/topology.h b/include/asm-i386/topology.h index aa4185ee81f..6adbd9b1ae8 100644 --- a/include/asm-i386/topology.h +++ b/include/asm-i386/topology.h @@ -112,4 +112,9 @@ extern unsigned long node_remap_size[]; extern cpumask_t cpu_coregroup_map(int cpu); +#ifdef CONFIG_SMP +#define mc_capable() (boot_cpu_data.x86_max_cores > 1) +#define smt_capable() (smp_num_siblings > 1) +#endif + #endif /* _ASM_I386_TOPOLOGY_H */ diff --git a/include/asm-ia64/topology.h b/include/asm-ia64/topology.h index 616b5ed2aa7..937c2125752 100644 --- a/include/asm-ia64/topology.h +++ b/include/asm-ia64/topology.h @@ -112,6 +112,7 @@ void build_cpu_to_node_map(void); #define topology_core_id(cpu) (cpu_data(cpu)->core_id) #define topology_core_siblings(cpu) (cpu_core_map[cpu]) #define topology_thread_siblings(cpu) (cpu_sibling_map[cpu]) +#define smt_capable() (smp_num_siblings > 1) #endif #include <asm-generic/topology.h> diff --git a/include/asm-powerpc/topology.h b/include/asm-powerpc/topology.h index 92f3e5507d2..bbc3844b086 100644 --- a/include/asm-powerpc/topology.h +++ b/include/asm-powerpc/topology.h @@ -93,5 +93,10 @@ static inline void sysfs_remove_device_from_node(struct sys_device *dev, #endif /* CONFIG_NUMA */ +#ifdef CONFIG_SMP +#include <asm/cputable.h> +#define smt_capable() (cpu_has_feature(CPU_FTR_SMT)) +#endif + #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_TOPOLOGY_H */ diff --git a/include/asm-sparc64/topology.h b/include/asm-sparc64/topology.h index 0e234e201bd..98a6c613589 100644 --- a/include/asm-sparc64/topology.h +++ b/include/asm-sparc64/topology.h @@ -1,6 +1,9 @@ #ifndef _ASM_SPARC64_TOPOLOGY_H #define _ASM_SPARC64_TOPOLOGY_H +#include <asm/spitfire.h> +#define smt_capable() (tlb_type == hypervisor) + #include <asm-generic/topology.h> #endif /* _ASM_SPARC64_TOPOLOGY_H */ diff --git a/include/asm-x86_64/topology.h b/include/asm-x86_64/topology.h index c4e46e7fa7b..6e7a2e976b0 100644 --- a/include/asm-x86_64/topology.h +++ b/include/asm-x86_64/topology.h @@ -59,6 +59,8 @@ extern int __node_distance(int, int); #define topology_core_id(cpu) (cpu_data[cpu].cpu_core_id) #define topology_core_siblings(cpu) (cpu_core_map[cpu]) #define topology_thread_siblings(cpu) (cpu_sibling_map[cpu]) +#define mc_capable() (boot_cpu_data.x86_max_cores > 1) +#define smt_capable() (smp_num_siblings > 1) #endif #include <asm-generic/topology.h> diff --git a/include/linux/sched.h b/include/linux/sched.h index ab8ffc54423..0bc81a151e5 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -570,6 +570,11 @@ enum idle_type #define SD_WAKE_AFFINE 32 /* Wake task to waking CPU */ #define SD_WAKE_BALANCE 64 /* Perform balancing at task wakeup */ #define SD_SHARE_CPUPOWER 128 /* Domain members share cpu power */ +#define SD_POWERSAVINGS_BALANCE 256 /* Balance for power savings */ + +#define BALANCE_FOR_POWER ((sched_mc_power_savings || sched_smt_power_savings) \ + ? SD_POWERSAVINGS_BALANCE : 0) + struct sched_group { struct sched_group *next; /* Must be a circular list */ @@ -1412,6 +1417,11 @@ static inline void arch_pick_mmap_layout(struct mm_struct *mm) extern long sched_setaffinity(pid_t pid, cpumask_t new_mask); extern long sched_getaffinity(pid_t pid, cpumask_t *mask); +#include <linux/sysdev.h> +extern int sched_mc_power_savings, sched_smt_power_savings; +extern struct sysdev_attribute attr_sched_mc_power_savings, attr_sched_smt_power_savings; +extern int sched_create_sysfs_power_savings_entries(struct sysdev_class *cls); + extern void normalize_rt_tasks(void); #ifdef CONFIG_PM diff --git a/include/linux/topology.h b/include/linux/topology.h index a305ae2e44b..ec1eca85290 100644 --- a/include/linux/topology.h +++ b/include/linux/topology.h @@ -134,7 +134,8 @@ .flags = SD_LOAD_BALANCE \ | SD_BALANCE_NEWIDLE \ | SD_BALANCE_EXEC \ - | SD_WAKE_AFFINE, \ + | SD_WAKE_AFFINE \ + | BALANCE_FOR_POWER, \ .last_balance = jiffies, \ .balance_interval = 1, \ .nr_balance_failed = 0, \ |