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 V4 12/20] sched/mmcid: Move initialization out of line
Date: Sun, 16 Nov 2025 21:48:56 +0100 (CET) [thread overview]
Message-ID: <20251104075427.430938391@linutronix.de> (raw)
In-Reply-To: <20251104075053.700034556@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>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---
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), 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
@@ -10431,6 +10431,20 @@ 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), 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:[~2025-11-16 20:48 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-16 20:48 [patch V4 00/20] sched: Rewrite MM CID management Thomas Gleixner
2025-11-16 20:48 ` [patch V4 01/20] sched/mmcid: Revert the complex " Thomas Gleixner
2025-11-17 16:42 ` Mathieu Desnoyers
2025-11-16 20:48 ` [patch V4 02/20] sched/mmcid: Use proper data structures Thomas Gleixner
2025-11-16 20:48 ` [patch V4 03/20] sched/mmcid: Cacheline align MM CID storage Thomas Gleixner
2025-11-17 16:44 ` Mathieu Desnoyers
2025-11-16 20:48 ` [patch V4 04/20] sched: Fixup whitespace damage Thomas Gleixner
2025-11-17 16:45 ` Mathieu Desnoyers
2025-11-16 20:48 ` [patch V4 05/20] sched/mmcid: Move scheduler code out of global header Thomas Gleixner
2025-11-19 16:17 ` Yury Norov
2025-11-16 20:48 ` [patch V4 06/20] sched/mmcid: Prevent pointless work in mm_update_cpus_allowed() Thomas Gleixner
2025-11-16 20:48 ` [patch V4 07/20] cpumask: Introduce cpumask_weighted_or() Thomas Gleixner
2025-11-16 20:48 ` [patch V4 08/20] sched/mmcid: Use cpumask_weighted_or() Thomas Gleixner
2025-11-19 16:20 ` Yury Norov
2025-11-16 20:48 ` [patch V4 09/20] cpumask: Cache num_possible_cpus() Thomas Gleixner
2025-11-17 16:48 ` Mathieu Desnoyers
2025-11-18 4:36 ` Shrikanth Hegde
2025-11-16 20:48 ` [patch V4 10/20] sched/mmcid: Convert mm CID mask to a bitmap Thomas Gleixner
2025-11-17 16:51 ` Mathieu Desnoyers
2025-11-16 20:48 ` [patch V4 11/20] signal: Move MMCID exit out of sighand lock Thomas Gleixner
2025-11-17 16:53 ` Mathieu Desnoyers
2025-11-16 20:48 ` Thomas Gleixner [this message]
2025-11-16 20:48 ` [patch V4 13/20] sched/mmcid: Provide precomputed maximal value Thomas Gleixner
2025-11-17 16:59 ` Mathieu Desnoyers
2025-11-16 20:49 ` [patch V4 14/20] sched/mmcid: Serialize sched_mm_cid_fork()/exit() with a mutex Thomas Gleixner
2025-11-16 20:49 ` [patch V4 15/20] sched/mmcid: Introduce per task/CPU ownership infrastructure Thomas Gleixner
2025-11-17 19:05 ` Mathieu Desnoyers
2025-11-16 20:49 ` [patch V4 16/20] sched/mmcid: Provide new scheduler CID mechanism Thomas Gleixner
2025-11-17 19:40 ` Mathieu Desnoyers
2025-11-16 20:49 ` [patch V4 17/20] sched/mmcid: Provide CID ownership mode fixup functions Thomas Gleixner
2025-11-17 19:41 ` Mathieu Desnoyers
2025-11-16 20:49 ` [patch V4 18/20] irqwork: Move data struct to a types header Thomas Gleixner
2025-11-16 20:49 ` [patch V4 19/20] sched/mmcid: Implement deferred mode change Thomas Gleixner
2025-11-16 20:49 ` [patch V4 20/20] sched/mmcid: Switch over to the new mechanism Thomas Gleixner
2025-11-17 19:45 ` Mathieu Desnoyers
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