[patch V3 12/20] sched/mmcid: Move initialization out of line

Thomas Gleixner
2025-10-29T13:09:19Z

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>
---
include/linux/mm_types.h | 15 +--------------
kernel/sched/core.c | 14 ++++++++++++++
2 files changed, 15 insertions(+), 14 deletions(-)

--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -1351,20 +1351,7 @@ static inline unsigned long *mm_cidmask(
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), bitmap_size(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)
{
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -10429,6 +10429,20 @@ void sched_mm_cid_fork(struct task_struc
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), bitmap_size(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 */