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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 V5 12/20] sched/mmcid: Move initialization out of line
Date: Wed, 19 Nov 2025 18:27:07 +0100 (CET)	[thread overview]
Message-ID: <20251119172549.769636491@linutronix.de> (raw)
In-Reply-To: <20251119171016.815482037@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 */



  parent reply	other threads:[~2025-11-19 17:27 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-19 17:26 [patch V5 00/20] sched: Rewrite MM CID management Thomas Gleixner
2025-11-19 17:26 ` [patch V5 01/20] sched/mmcid: Revert the complex " Thomas Gleixner
2025-11-20 11:20   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-19 17:26 ` [patch V5 02/20] sched/mmcid: Use proper data structures Thomas Gleixner
2025-11-20 11:20   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-19 17:26 ` [patch V5 03/20] sched/mmcid: Cacheline align MM CID storage Thomas Gleixner
2025-11-20 11:20   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-19 17:26 ` [patch V5 04/20] sched: Fixup whitespace damage Thomas Gleixner
2025-11-20 11:20   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-19 17:26 ` [patch V5 05/20] sched/mmcid: Move scheduler code out of global header Thomas Gleixner
2025-11-20 11:20   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-19 17:26 ` [patch V5 06/20] sched/mmcid: Prevent pointless work in mm_update_cpus_allowed() Thomas Gleixner
2025-11-20 11:20   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-19 17:26 ` [patch V5 07/20] cpumask: Introduce cpumask_weighted_or() Thomas Gleixner
2025-11-20 11:20   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-19 17:26 ` [patch V5 08/20] sched/mmcid: Use cpumask_weighted_or() Thomas Gleixner
2025-11-20 11:20   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-19 17:27 ` [patch V5 09/20] cpumask: Cache num_possible_cpus() Thomas Gleixner
2025-11-20 11:20   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
     [not found]   ` <CGME20251121225645eucas1p2d0165821efb61ea8732d14b62c50af52@eucas1p2.samsung.com>
2025-11-21 22:56     ` [patch V5 09/20] " Marek Szyprowski
2025-11-22 15:36       ` Thomas Gleixner
2025-11-22 16:24         ` Marek Szyprowski
2025-11-22 19:09           ` Paul E. McKenney
2025-11-23 19:03         ` [tip: core/rseq] cpu: Initialize __num_possible_cpus correctly tip-bot2 for Thomas Gleixner
2025-11-22 18:47       ` [patch V5 09/20] cpumask: Cache num_possible_cpus() Paul E. McKenney
2025-11-22 19:10         ` Thomas Gleixner
2025-11-22  0:27   ` Nathan Chancellor
2025-11-26  4:36   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-19 17:27 ` [patch V5 10/20] sched/mmcid: Convert mm CID mask to a bitmap Thomas Gleixner
2025-11-20 11:19   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-26  4:36   ` tip-bot2 for Thomas Gleixner
2025-11-19 17:27 ` [patch V5 11/20] signal: Move MMCID exit out of sighand lock Thomas Gleixner
2025-11-20 11:19   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-26  4:36   ` tip-bot2 for Thomas Gleixner
2025-11-19 17:27 ` Thomas Gleixner [this message]
2025-11-20 11:19   ` [tip: core/rseq] sched/mmcid: Move initialization out of line tip-bot2 for Thomas Gleixner
2025-11-26  4:36   ` tip-bot2 for Thomas Gleixner
2025-11-19 17:27 ` [patch V5 13/20] sched/mmcid: Provide precomputed maximal value Thomas Gleixner
2025-11-20 11:19   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-26  4:36   ` tip-bot2 for Thomas Gleixner
2025-11-19 17:27 ` [patch V5 14/20] sched/mmcid: Serialize sched_mm_cid_fork()/exit() with a mutex Thomas Gleixner
2025-11-20 11:19   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-26  4:36   ` tip-bot2 for Thomas Gleixner
2025-11-19 17:27 ` [patch V5 15/20] sched/mmcid: Introduce per task/CPU ownership infrastructure Thomas Gleixner
2025-11-20 11:19   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-26  4:36   ` tip-bot2 for Thomas Gleixner
2025-11-19 17:27 ` [patch V5 16/20] sched/mmcid: Provide new scheduler CID mechanism Thomas Gleixner
2025-11-20 11:19   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-26  4:36   ` tip-bot2 for Thomas Gleixner
2025-11-19 17:27 ` [patch V5 17/20] sched/mmcid: Provide CID ownership mode fixup functions Thomas Gleixner
2025-11-20 11:19   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-26  4:36   ` tip-bot2 for Thomas Gleixner
2025-11-19 17:27 ` [patch V5 18/20] irqwork: Move data struct to a types header Thomas Gleixner
2025-11-20 11:19   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-26  4:36   ` tip-bot2 for Thomas Gleixner
2025-11-19 17:27 ` [patch V5 19/20] sched/mmcid: Implement deferred mode change Thomas Gleixner
2025-11-20 11:19   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-26  4:36   ` tip-bot2 for Thomas Gleixner
2025-11-19 17:27 ` [patch V5 20/20] sched/mmcid: Switch over to the new mechanism Thomas Gleixner
2025-11-20 11:19   ` [tip: core/rseq] " tip-bot2 for Thomas Gleixner
2025-11-22  0:43   ` [patch V5 20/20] " Nathan Chancellor
2025-11-22 15:02     ` Thomas Gleixner
2025-11-22 16:54       ` Shrikanth Hegde
2025-11-23 19:03       ` [tip: core/rseq] sched/mmcid: Ensure that per CPU threshold is > 0 tip-bot2 for Thomas Gleixner
2025-11-26  4:36   ` [tip: core/rseq] sched/mmcid: Switch over to the new mechanism tip-bot2 for Thomas Gleixner
2026-01-28  0:01 ` [patch V5 00/20] sched: Rewrite MM CID management Ihor Solodrai
2026-01-28  8:46   ` Peter Zijlstra
2026-01-28 11:57   ` Thomas Gleixner
2026-01-28 12:58     ` Shrikanth Hegde
2026-01-28 13:56       ` Thomas Gleixner
2026-01-28 22:24         ` Thomas Gleixner
2026-01-28 22:33           ` Ihor Solodrai
2026-01-28 23:08             ` Ihor Solodrai
2026-01-29 17:06               ` Thomas Gleixner

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