The patch titled
Subject: mm/kfence: remove hung_task cruft
has been added to the -mm mm-unstable branch. Its filename is
mm-kfence-remove-hung_task-cruft.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-kfence-remove-hung_task-cruft.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Pavankumar Kondeti <quic_pkondeti@xxxxxxxxxxx>
Subject: mm/kfence: remove hung_task cruft
Date: Wed, 9 Nov 2022 14:56:46 +0530
commit fdf756f71271 ("sched: Fix more TASK_state comparisons") makes
hung_task not to monitor TASK_IDLE tasks. The special handling to
workaround hung_task warnings is not required anymore.
Link: https://lkml.kernel.org/r/1667986006-25420-1-git-send-email-quic_pkondeti@xxxxxxxxxxx
Signed-off-by: Pavankumar Kondeti <quic_pkondeti@xxxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/kfence/core.c | 12 +-----------
1 file changed, 1 insertion(+), 11 deletions(-)
--- a/mm/kfence/core.c~mm-kfence-remove-hung_task-cruft
+++ a/mm/kfence/core.c
@@ -26,7 +26,6 @@
#include <linux/random.h>
#include <linux/rcupdate.h>
#include <linux/sched/clock.h>
-#include <linux/sched/sysctl.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
@@ -799,16 +798,7 @@ static void toggle_allocation_gate(struc
/* Enable static key, and await allocation to happen. */
static_branch_enable(&kfence_allocation_key);
- if (sysctl_hung_task_timeout_secs) {
- /*
- * During low activity with no allocations we might wait a
- * while; let's avoid the hung task warning.
- */
- wait_event_idle_timeout(allocation_wait, atomic_read(&kfence_allocation_gate),
- sysctl_hung_task_timeout_secs * HZ / 2);
- } else {
- wait_event_idle(allocation_wait, atomic_read(&kfence_allocation_gate));
- }
+ wait_event_idle(allocation_wait, atomic_read(&kfence_allocation_gate));
/* Disable static key and reset timer. */
static_branch_disable(&kfence_allocation_key);
_
Patches currently in -mm which might be from quic_pkondeti@xxxxxxxxxxx are
mm-kfence-remove-hung_task-cruft.patch
