From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
Gabriele Monaco <gmonaco@redhat.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Michael Jeanson <mjeanson@efficios.com>,
Jens Axboe <axboe@kernel.dk>,
"Paul E. McKenney" <paulmck@kernel.org>,
"Gautham R. Shenoy" <gautham.shenoy@amd.com>,
Florian Weimer <fweimer@redhat.com>,
Tim Chen <tim.c.chen@intel.com>,
Yury Norov <yury.norov@gmail.com>,
Shrikanth Hegde <sshegde@linux.ibm.com>
Subject: [patch V3 12/20] sched/mmcid: Move initialization out of line
Date: Wed, 29 Oct 2025 14:09:16 +0100 (CET) [thread overview]
Message-ID: <20251029124516.034484128@linutronix.de> (raw)
In-Reply-To: <20251029123717.886619142@linutronix.de>
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 */
next prev parent reply other threads:[~2025-10-29 13:09 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-29 13:08 [patch V3 00/20] sched: Rewrite MM CID management Thomas Gleixner
2025-10-29 13:08 ` [patch V3 01/20] sched/mmcid: Revert the complex " Thomas Gleixner
2025-10-29 13:08 ` [patch V3 02/20] sched/mmcid: Use proper data structures Thomas Gleixner
2025-10-29 15:31 ` Mathieu Desnoyers
2025-10-29 13:08 ` [patch V3 03/20] sched/mmcid: Cacheline align MM CID storage Thomas Gleixner
2025-10-29 15:39 ` Mathieu Desnoyers
2025-10-29 21:09 ` Thomas Gleixner
2025-10-30 14:15 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 04/20] sched: Fixup whitespace damage Thomas Gleixner
2025-10-29 15:42 ` Mathieu Desnoyers
2025-10-29 21:11 ` Thomas Gleixner
2025-10-29 13:09 ` [patch V3 05/20] sched/mmcid: Move scheduler code out of global header Thomas Gleixner
2025-10-29 15:43 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 06/20] sched/mmcid: Prevent pointless work in mm_update_cpus_allowed() Thomas Gleixner
2025-10-29 15:45 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 07/20] cpumask: Introduce cpumask_weighted_or() Thomas Gleixner
2025-10-29 15:49 ` Mathieu Desnoyers
2025-11-03 9:15 ` Shrikanth Hegde
2025-11-03 13:29 ` Thomas Gleixner
2025-11-10 16:11 ` Peter Zijlstra
2025-11-10 16:42 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 08/20] sched/mmcid: Use cpumask_weighted_or() Thomas Gleixner
2025-10-29 15:51 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 09/20] cpumask: Cache num_possible_cpus() Thomas Gleixner
2025-10-29 15:54 ` Mathieu Desnoyers
2025-10-29 21:11 ` Thomas Gleixner
2025-11-01 22:59 ` Thomas Gleixner
2025-11-03 10:06 ` Shrikanth Hegde
2025-11-03 13:28 ` Thomas Gleixner
2025-10-29 13:09 ` [patch V3 10/20] sched/mmcid: Convert mm CID mask to a bitmap Thomas Gleixner
2025-10-30 13:59 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 11/20] signal: Move MMCID exit out of sighand lock Thomas Gleixner
2025-10-29 13:09 ` Thomas Gleixner [this message]
2025-10-30 14:02 ` [patch V3 12/20] sched/mmcid: Move initialization out of line Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 13/20] sched/mmcid: Provide precomputed maximal value Thomas Gleixner
2025-10-30 14:23 ` Mathieu Desnoyers
2025-10-31 15:06 ` Thomas Gleixner
2025-10-31 15:14 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 14/20] sched/mmcid: Serialize sched_mm_cid_fork()/exit() with a mutex Thomas Gleixner
2025-10-30 14:25 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 15/20] sched/mmcid: Introduce per task/CPU ownership infrastrcuture Thomas Gleixner
2025-10-30 14:45 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 16/20] sched/mmcid: Provide new scheduler CID mechanism Thomas Gleixner
2025-10-30 15:09 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 17/20] sched/mmcid: Provide CID ownership mode fixup functions Thomas Gleixner
2025-10-30 15:51 ` Mathieu Desnoyers
2025-10-31 16:54 ` Thomas Gleixner
2025-10-31 19:15 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 18/20] irqwork: Move data struct to a types header Thomas Gleixner
2025-10-30 15:52 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 19/20] sched/mmcid: Implement deferred mode change Thomas Gleixner
2025-10-30 15:56 ` Mathieu Desnoyers
2025-10-29 13:09 ` [patch V3 20/20] sched/mmcid: Switch over to the new mechanism Thomas Gleixner
2025-10-30 16:07 ` Mathieu Desnoyers
2025-10-31 16:57 ` Thomas Gleixner
2025-10-31 19:17 ` Mathieu Desnoyers
2025-11-24 12:10 ` Mark Brown
2025-11-24 12:27 ` Florian Weimer
2025-11-24 13:28 ` Mark Brown
2025-10-30 5:00 ` [patch V3 00/20] sched: Rewrite MM CID management Shrikanth Hegde
2025-10-30 6:40 ` Shrikanth Hegde
2025-10-31 19:36 ` Thomas Gleixner
2025-11-01 7:56 ` Shrikanth Hegde
2025-11-01 12:27 ` Thomas Gleixner
2025-11-10 17:09 ` Gabriele Monaco
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