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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Mar 2025 19:32:21.8770 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4eebad5a-3e68-4ae3-2f75-08dd671cc510 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF0002636B.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW6PR12MB8835 Content-Type: text/plain; charset="utf-8" This is to prevent unnecessary scanning of short lived tasks spending in scanning. Signed-off-by: Raghavendra K T --- mm/kmmscand.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/mm/kmmscand.c b/mm/kmmscand.c index a19b1f31271d..84140b9e8ce2 100644 --- a/mm/kmmscand.c +++ b/mm/kmmscand.c @@ -28,6 +28,7 @@ =20 static struct task_struct *kmmscand_thread __read_mostly; static DEFINE_MUTEX(kmmscand_mutex); +extern unsigned int sysctl_numa_balancing_scan_delay; =20 /* * Total VMA size to cover during scan. @@ -880,6 +881,7 @@ void __kmmscand_enter(struct mm_struct *mm) { struct kmmscand_mm_slot *kmmscand_slot; struct mm_slot *slot; + unsigned long now; int wakeup; =20 /* __kmmscand_exit() must not run from under us */ @@ -890,10 +892,12 @@ void __kmmscand_enter(struct mm_struct *mm) if (!kmmscand_slot) return; =20 + now =3D jiffies; kmmscand_slot->address =3D 0; kmmscand_slot->scan_period =3D kmmscand_mm_scan_period_ms; kmmscand_slot->scan_size =3D kmmscand_scan_size; - kmmscand_slot->next_scan =3D 0; + kmmscand_slot->next_scan =3D now + + msecs_to_jiffies(sysctl_numa_balancing_scan_delay); kmmscand_slot->scan_delta =3D 0; =20 slot =3D &kmmscand_slot->slot; --=20 2.34.1