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mm/kfence: remove hung_task cruft 

commit fdf756f712 ("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>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Pavankumar Kondeti 2022-11-09 14:56:46 +05:30 committed by Andrew Morton
parent c959a0e8de
commit c66b6ead74
1 changed files with 1 additions and 11 deletions
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12
mm/kfence/core.c
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@ -26,7 +26,6 @@
#include <linux/random.h> #include <linux/random.h>
#include <linux/rcupdate.h> #include <linux/rcupdate.h>
#include <linux/sched/clock.h> #include <linux/sched/clock.h>
#include <linux/sched/sysctl.h>
#include <linux/seq_file.h> #include <linux/seq_file.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/spinlock.h> #include <linux/spinlock.h>
@ -799,16 +798,7 @@ static void toggle_allocation_gate(struct work_struct *work)
/* Enable static key, and await allocation to happen. */ /* Enable static key, and await allocation to happen. */
static_branch_enable(&kfence_allocation_key); static_branch_enable(&kfence_allocation_key);
if (sysctl_hung_task_timeout_secs) { wait_event_idle(allocation_wait, atomic_read(&kfence_allocation_gate));
/*
* 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));
}
/* Disable static key and reset timer. */ /* Disable static key and reset timer. */
static_branch_disable(&kfence_allocation_key); static_branch_disable(&kfence_allocation_key);