change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/kernel/freezer.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * kernel/freezer.c - Function to freeze a process
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  *
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@@ -10,6 +11,10 @@
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 #include <linux/syscalls.h>
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 #include <linux/freezer.h>
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 #include <linux/kthread.h>
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+#include <linux/mmu_context.h>
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+
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+#undef CREATE_TRACE_POINT
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+#include <trace/hooks/cgroup.h>
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 /* total number of freezing conditions in effect */
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 atomic_t system_freezing_cnt = ATOMIC_INIT(0);
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@@ -20,12 +25,6 @@
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  */
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 bool pm_freezing;
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 bool pm_nosig_freezing;
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-
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-/*
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- * Temporary export for the deadlock workaround in ata_scsi_hotplug().
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- * Remove once the hack becomes unnecessary.
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- */
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-EXPORT_SYMBOL_GPL(pm_freezing);
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 /* protects freezing and frozen transitions */
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 static DEFINE_SPINLOCK(freezer_lock);
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@@ -75,6 +74,7 @@
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 		if (!freezing(current) ||
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 		    (check_kthr_stop && kthread_should_stop()))
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 			current->flags &= ~PF_FROZEN;
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+		trace_android_rvh_refrigerator(pm_nosig_freezing);
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 		spin_unlock_irq(&freezer_lock);
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 		if (!(current->flags & PF_FROZEN))
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@@ -151,9 +151,16 @@
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 void __thaw_task(struct task_struct *p)
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 {
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 	unsigned long flags;
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+	const struct cpumask *mask = task_cpu_possible_mask(p);
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 	spin_lock_irqsave(&freezer_lock, flags);
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-	if (frozen(p))
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+	/*
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+	 * Wake up frozen tasks. On asymmetric systems where tasks cannot
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+	 * run on all CPUs, ttwu() may have deferred a wakeup generated
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+	 * before thaw_secondary_cpus() had completed so we generate
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+	 * additional wakeups here for tasks in the PF_FREEZER_SKIP state.
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+	 */
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+	if (frozen(p) || (frozen_or_skipped(p) && mask != cpu_possible_mask))
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 		wake_up_process(p);
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 	spin_unlock_irqrestore(&freezer_lock, flags);
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 }