Thread (43 messages) 43 messages, 4 authors, 2022-11-21

Re: [PATCH v5 08/24] sched: Introduce per memory space current virtual cpu id

From: Peter Zijlstra <peterz@infradead.org>
Date: 2022-11-08 13:00:53
Also in: lkml

On Thu, Nov 03, 2022 at 04:03:43PM -0400, Mathieu Desnoyers wrote:
quoted hunk ↗ jump to hunk
diff --git a/fs/exec.c b/fs/exec.c
index 349a5da91efe..93eb88f4053b 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1013,6 +1013,9 @@ static int exec_mmap(struct mm_struct *mm)
 	tsk->active_mm = mm;
 	tsk->mm = mm;
 	lru_gen_add_mm(mm);
+	mm_init_vcpu_lock(mm);
+	mm_init_vcpumask(mm);
+	mm_init_node_vcpumask(mm);
 	/*
 	 * This prevents preemption while active_mm is being loaded and
 	 * it and mm are being updated, which could cause problems for
quoted hunk ↗ jump to hunk
@@ -1150,6 +1154,9 @@ static struct mm_struct *mm_init(struct mm_struct *mm, struct task_struct *p,
 
 	mm->user_ns = get_user_ns(user_ns);
 	lru_gen_init_mm(mm);
+	mm_init_vcpu_lock(mm);
+	mm_init_vcpumask(mm);
+	mm_init_node_vcpumask(mm);
 	return mm;
 
 fail_nocontext:
Why isn't all that a single mm_init_vcpu(mm) or something ?
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