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* [to-be-updated] kfence-use-power-efficient-work-queue-to-run-delayed-work.patch removed from -mm tree
@ 2021-04-22  4:15 akpm
  0 siblings, 0 replies; only message in thread
From: akpm @ 2021-04-22  4:15 UTC (permalink / raw)
  To: dvyukov, elver, glider, hdanton, jannh, mark.rutland, mm-commits

The patch titled
     Subject: kfence: use power-efficient work queue to run delayed work
has been removed from the -mm tree.  Its filename was

This patch was dropped because an updated version will be merged

From: Marco Elver <>
Subject: kfence: use power-efficient work queue to run delayed work

Use the power-efficient work queue, to avoid the pathological case where
we keep pinning ourselves on the same possibly idle CPU on systems that
want to be power-efficient (

Signed-off-by: Marco Elver <>
Cc: Alexander Potapenko <>
Cc: Dmitry Vyukov <>
Cc: Jann Horn <>
Cc: Mark Rutland <>
Cc: Hillf Danton <>
Signed-off-by: Andrew Morton <>

 mm/kfence/core.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/mm/kfence/core.c~kfence-use-power-efficient-work-queue-to-run-delayed-work
+++ a/mm/kfence/core.c
@@ -642,7 +642,8 @@ static void toggle_allocation_gate(struc
 	/* Disable static key and reset timer. */
-	schedule_delayed_work(&kfence_timer, msecs_to_jiffies(kfence_sample_interval));
+	queue_delayed_work(system_power_efficient_wq, &kfence_timer,
+			   msecs_to_jiffies(kfence_sample_interval));
 static DECLARE_DELAYED_WORK(kfence_timer, toggle_allocation_gate);
@@ -671,7 +672,7 @@ void __init kfence_init(void)
 	WRITE_ONCE(kfence_enabled, true);
-	schedule_delayed_work(&kfence_timer, 0);
+	queue_delayed_work(system_power_efficient_wq, &kfence_timer, 0);
 	pr_info("initialized - using %lu bytes for %d objects at 0x%p-0x%p\n", KFENCE_POOL_SIZE,
 		CONFIG_KFENCE_NUM_OBJECTS, (void *)__kfence_pool,
 		(void *)(__kfence_pool + KFENCE_POOL_SIZE));

Patches currently in -mm which might be from are


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2021-04-22  4:15 [to-be-updated] kfence-use-power-efficient-work-queue-to-run-delayed-work.patch removed from -mm tree akpm

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