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sched/mmcid: Move initialization out of line

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It's getting bigger soon, so just move it out of line to the rest of the
code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/20251119172549.769636491@linutronix.de
This commit is contained in:
Thomas Gleixner 2025-11-19 18:27:07 +01:00
parent 2b1642b881
commit bf070520e3
2 changed files with 15 additions and 14 deletions
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15
include/linux/mm_types.h
View File

@ -1351,20 +1351,7 @@ static inline unsigned long *mm_cidmask(struct mm_struct *mm)
return (unsigned long *)cid_bitmap;
}
static inline void mm_init_cid(struct mm_struct *mm, struct task_struct *p)
{
int i;
for_each_possible_cpu(i) {
struct mm_cid_pcpu *pcpu = per_cpu_ptr(mm->mm_cid.pcpu, i);
pcpu->cid = MM_CID_UNSET;
}
mm->mm_cid.nr_cpus_allowed = p->nr_cpus_allowed;
raw_spin_lock_init(&mm->mm_cid.lock);
cpumask_copy(mm_cpus_allowed(mm), &p->cpus_mask);
bitmap_zero(mm_cidmask(mm), num_possible_cpus());
}
void mm_init_cid(struct mm_struct *mm, struct task_struct *p);
static inline int mm_alloc_cid_noprof(struct mm_struct *mm, struct task_struct *p)
{

14
kernel/sched/core.c
View File

@ -10431,6 +10431,20 @@ void sched_mm_cid_fork(struct task_struct *t)
WARN_ON_ONCE(!t->mm || t->mm_cid.cid != MM_CID_UNSET);
t->mm_cid.active = 1;
}
void mm_init_cid(struct mm_struct *mm, struct task_struct *p)
{
struct mm_cid_pcpu __percpu *pcpu = mm->mm_cid.pcpu;
int cpu;
for_each_possible_cpu(cpu)
per_cpu_ptr(pcpu, cpu)->cid = MM_CID_UNSET;
mm->mm_cid.nr_cpus_allowed = p->nr_cpus_allowed;
raw_spin_lock_init(&mm->mm_cid.lock);
cpumask_copy(mm_cpus_allowed(mm), &p->cpus_mask);
bitmap_zero(mm_cidmask(mm), num_possible_cpus());
}
#else /* CONFIG_SCHED_MM_CID */
static inline void mm_update_cpus_allowed(struct mm_struct *mm, const struct cpumask *affmsk) { }
#endif /* !CONFIG_SCHED_MM_CID */