add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/kernel/hung_task.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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  * Detect Hung Task
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  *
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@@ -19,8 +20,11 @@
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 #include <linux/utsname.h>
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 #include <linux/sched/signal.h>
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 #include <linux/sched/debug.h>
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+#include <linux/sched/sysctl.h>
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 #include <trace/events/sched.h>
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+#undef CREATE_TRACE_POINTS
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+#include <trace/hooks/hung_task.h>
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 /*
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  * The number of tasks checked:
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@@ -51,8 +55,17 @@
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 static int __read_mostly did_panic;
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 static bool hung_task_show_lock;
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 static bool hung_task_call_panic;
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+static bool hung_task_show_all_bt;
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 static struct task_struct *watchdog_task;
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+
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+#ifdef CONFIG_SMP
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+/*
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+ * Should we dump all CPUs backtraces in a hung task event?
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+ * Defaults to 0, can be changed via sysctl.
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+ */
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+unsigned int __read_mostly sysctl_hung_task_all_cpu_backtrace;
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+#endif /* CONFIG_SMP */
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 /*
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  * Should we panic (and reboot, if panic_timeout= is set) when a
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@@ -60,16 +73,6 @@
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  */
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 unsigned int __read_mostly sysctl_hung_task_panic =
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 				CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE;
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-
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-static int __init hung_task_panic_setup(char *str)
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-{
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-	int rc = kstrtouint(str, 0, &sysctl_hung_task_panic);
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-
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-	if (rc)
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-		return rc;
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-	return 1;
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-}
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-__setup("hung_task_panic=", hung_task_panic_setup);
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 static int
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 hung_task_panic(struct notifier_block *this, unsigned long event, void *ptr)
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@@ -91,8 +94,8 @@
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 	 * Ensure the task is not frozen.
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 	 * Also, skip vfork and any other user process that freezer should skip.
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 	 */
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-	if (unlikely(t->flags & (PF_FROZEN | PF_FREEZER_SKIP)))
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-	    return;
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+	if (unlikely(frozen_or_skipped(t)))
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+		return;
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 	/*
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 	 * When a freshly created task is scheduled once, changes its state to
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@@ -126,7 +129,7 @@
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 		if (sysctl_hung_task_warnings > 0)
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 			sysctl_hung_task_warnings--;
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 		pr_err("INFO: task %s:%d blocked for more than %ld seconds.\n",
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-			t->comm, t->pid, timeout);
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+		       t->comm, t->pid, (jiffies - t->last_switch_time) / HZ);
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 		pr_err("      %s %s %.*s\n",
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 			print_tainted(), init_utsname()->release,
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 			(int)strcspn(init_utsname()->version, " "),
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@@ -135,6 +138,9 @@
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 			" disables this message.\n");
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 		sched_show_task(t);
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 		hung_task_show_lock = true;
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+
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+		if (sysctl_hung_task_all_cpu_backtrace)
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+			hung_task_show_all_bt = true;
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 	}
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 	touch_nmi_watchdog();
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@@ -173,6 +179,7 @@
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 	int max_count = sysctl_hung_task_check_count;
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 	unsigned long last_break = jiffies;
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 	struct task_struct *g, *t;
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+	bool need_check = true;
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 	/*
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 	 * If the system crashed already then all bets are off,
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@@ -191,18 +198,25 @@
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 				goto unlock;
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 			last_break = jiffies;
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 		}
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-		/* use "==" to skip the TASK_KILLABLE tasks waiting on NFS */
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-		if (t->state == TASK_UNINTERRUPTIBLE)
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-			check_hung_task(t, timeout);
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+		trace_android_vh_check_uninterruptible_tasks(t, timeout, &need_check);
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+		if (need_check)
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+			/* use "==" to skip the TASK_KILLABLE tasks waiting on NFS */
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+			if (t->state == TASK_UNINTERRUPTIBLE)
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+				check_hung_task(t, timeout);
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 	}
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+	trace_android_vh_check_uninterruptible_tasks_dn(NULL);
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  unlock:
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 	rcu_read_unlock();
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 	if (hung_task_show_lock)
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 		debug_show_all_locks();
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-	if (hung_task_call_panic) {
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+
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+	if (hung_task_show_all_bt) {
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+		hung_task_show_all_bt = false;
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 		trigger_all_cpu_backtrace();
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-		panic("hung_task: blocked tasks");
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 	}
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+
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+	if (hung_task_call_panic)
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+		panic("hung_task: blocked tasks");
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 }
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 static long hung_timeout_jiffies(unsigned long last_checked,
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@@ -217,8 +231,7 @@
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  * Process updating of timeout sysctl
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  */
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 int proc_dohung_task_timeout_secs(struct ctl_table *table, int write,
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-				  void __user *buffer,
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-				  size_t *lenp, loff_t *ppos)
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+				  void *buffer, size_t *lenp, loff_t *ppos)
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 {
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 	int ret;
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