diff options
author | Li Zefan <lizefan@huawei.com> | 2013-03-05 08:06:23 (GMT) |
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committer | Ingo Molnar <mingo@kernel.org> | 2013-03-06 10:24:31 (GMT) |
commit | 5e6521eaa1ee581a13b904f35b80c5efeb2baccb (patch) | |
tree | 4a8e82ba57da872636ff432edc036914163249e5 /kernel/sched/sched.h | |
parent | cc1f4b1f3faed9f2040eff2a75f510b424b3cf18 (diff) | |
download | linux-5e6521eaa1ee581a13b904f35b80c5efeb2baccb.tar.xz |
sched: Move struct sched_group to kernel/sched/sched.h
Move struct sched_group_power and sched_group and related inline
functions to kernel/sched/sched.h, as they are used internally
only.
Signed-off-by: Li Zefan <lizefan@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5135A77F.2010705@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/sched.h')
-rw-r--r-- | kernel/sched/sched.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 709a30c..1a4a2b1 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -572,6 +572,62 @@ static inline struct sched_domain *highest_flag_domain(int cpu, int flag) DECLARE_PER_CPU(struct sched_domain *, sd_llc); DECLARE_PER_CPU(int, sd_llc_id); +struct sched_group_power { + atomic_t ref; + /* + * CPU power of this group, SCHED_LOAD_SCALE being max power for a + * single CPU. + */ + unsigned int power, power_orig; + unsigned long next_update; + /* + * Number of busy cpus in this group. + */ + atomic_t nr_busy_cpus; + + unsigned long cpumask[0]; /* iteration mask */ +}; + +struct sched_group { + struct sched_group *next; /* Must be a circular list */ + atomic_t ref; + + unsigned int group_weight; + struct sched_group_power *sgp; + + /* + * The CPUs this group covers. + * + * NOTE: this field is variable length. (Allocated dynamically + * by attaching extra space to the end of the structure, + * depending on how many CPUs the kernel has booted up with) + */ + unsigned long cpumask[0]; +}; + +static inline struct cpumask *sched_group_cpus(struct sched_group *sg) +{ + return to_cpumask(sg->cpumask); +} + +/* + * cpumask masking which cpus in the group are allowed to iterate up the domain + * tree. + */ +static inline struct cpumask *sched_group_mask(struct sched_group *sg) +{ + return to_cpumask(sg->sgp->cpumask); +} + +/** + * group_first_cpu - Returns the first cpu in the cpumask of a sched_group. + * @group: The group whose first cpu is to be returned. + */ +static inline unsigned int group_first_cpu(struct sched_group *group) +{ + return cpumask_first(sched_group_cpus(group)); +} + extern int group_balance_cpu(struct sched_group *sg); #endif /* CONFIG_SMP */ |