+ mm-kfence-remove-hung_task-cruft.patch added to mm-unstable branch

+ mm-kfence-remove-hung_task-cruft.patch added to mm-unstable branch

[Andrew Morton]

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@quicinc.com>
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@quicinc.com
Signed-off-by: Pavankumar Kondeti <quic_pkondeti@quicinc.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 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@quicinc.com are

mm-kfence-remove-hung_task-cruft.patch