add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/lib/test_rhashtable.c
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..
@@ -1,12 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Resizable, Scalable, Concurrent Hash Table
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  *
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  * Copyright (c) 2014-2015 Thomas Graf <tgraf@suug.ch>
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  * Copyright (c) 2008-2014 Patrick McHardy <kaber@trash.net>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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8
 
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 /**************************************************************************
..
..
@@ -20,11 +17,11 @@
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 #include <linux/module.h>
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 #include <linux/rcupdate.h>
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 #include <linux/rhashtable.h>
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-#include <linux/semaphore.h>
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 #include <linux/slab.h>
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 #include <linux/sched.h>
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 #include <linux/random.h>
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 #include <linux/vmalloc.h>
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+#include <linux/wait.h>
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25
 
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 #define MAX_ENTRIES	1000000
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 #define TEST_INSERT_FAIL INT_MAX
..
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@@ -112,8 +109,8 @@
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 	.automatic_shrinking = false,
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 };
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-static struct semaphore prestart_sem;
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-static struct semaphore startup_sem = __SEMAPHORE_INITIALIZER(startup_sem, 0);
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+static atomic_t startup_count;
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+static DECLARE_WAIT_QUEUE_HEAD(startup_wait);
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114
 
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 static int insert_retry(struct rhashtable *ht, struct test_obj *obj,
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                         const struct rhashtable_params params)
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@@ -177,16 +174,11 @@
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174
 
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 static void test_bucket_stats(struct rhashtable *ht, unsigned int entries)
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 {
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-	unsigned int err, total = 0, chain_len = 0;
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+	unsigned int total = 0, chain_len = 0;
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 	struct rhashtable_iter hti;
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 	struct rhash_head *pos;
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180
 
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-	err = rhashtable_walk_init(ht, &hti, GFP_KERNEL);
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-	if (err) {
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-		pr_warn("Test failed: allocation error");
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-		return;
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-	}
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-
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+	rhashtable_walk_enter(ht, &hti);
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 	rhashtable_walk_start(&hti);
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183
 
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 	while ((pos = rhashtable_walk_next(&hti))) {
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@@ -395,7 +387,7 @@
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 			if (WARN(err, "cannot remove element at slot %d", i))
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 				continue;
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 		} else {
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-			if (WARN(err != -ENOENT, "removed non-existant element %d, error %d not %d",
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+			if (WARN(err != -ENOENT, "removed non-existent element %d, error %d not %d",
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 			     i, err, -ENOENT))
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 				continue;
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 		}
..
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@@ -440,9 +432,9 @@
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 			if (WARN(err, "cannot remove element at slot %d", i))
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 				continue;
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 		} else {
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-			if (WARN(err != -ENOENT, "removed non-existant element, error %d not %d",
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+			if (WARN(err != -ENOENT, "removed non-existent element, error %d not %d",
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 				 err, -ENOENT))
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-			continue;
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+				continue;
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 		}
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 	}
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..
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@@ -505,7 +497,7 @@
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 		struct rhash_head *pos, *next;
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 		struct test_obj_rhl *p;
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-		pos = rht_dereference(tbl->buckets[i], ht);
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+		pos = rht_ptr_exclusive(tbl->buckets + i);
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 		next = !rht_is_a_nulls(pos) ? rht_dereference(pos->next, ht) : NULL;
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 		if (!rht_is_a_nulls(pos)) {
..
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@@ -641,9 +633,12 @@
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 	int i, step, err = 0, insert_retries = 0;
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 	struct thread_data *tdata = data;
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635
 
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-	up(&prestart_sem);
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-	if (down_interruptible(&startup_sem))
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-		pr_err("  thread[%d]: down_interruptible failed\n", tdata->id);
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+	if (atomic_dec_and_test(&startup_count))
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+		wake_up(&startup_wait);
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+	if (wait_event_interruptible(startup_wait, atomic_read(&startup_count) == -1)) {
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+		pr_err("  thread[%d]: interrupted\n", tdata->id);
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+		goto out;
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+	}
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 	for (i = 0; i < tdata->entries; i++) {
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 		tdata->objs[i].value.id = i;
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@@ -762,7 +757,7 @@
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 	pr_info("Testing concurrent rhashtable access from %d threads\n",
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 	        tcount);
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-	sema_init(&prestart_sem, 1 - tcount);
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+	atomic_set(&startup_count, tcount);
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 	tdata = vzalloc(array_size(tcount, sizeof(struct thread_data)));
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 	if (!tdata)
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 		return -ENOMEM;
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@@ -788,15 +783,18 @@
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 		tdata[i].objs = objs + i * entries;
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 		tdata[i].task = kthread_run(threadfunc, &tdata[i],
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 		                            "rhashtable_thrad[%d]", i);
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-		if (IS_ERR(tdata[i].task))
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+		if (IS_ERR(tdata[i].task)) {
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 			pr_err(" kthread_run failed for thread %d\n", i);
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-		else
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+			atomic_dec(&startup_count);
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+		} else {
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 			started_threads++;
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+		}
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 	}
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-	if (down_interruptible(&prestart_sem))
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-		pr_err("  down interruptible failed\n");
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-	for (i = 0; i < tcount; i++)
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-		up(&startup_sem);
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+	if (wait_event_interruptible(startup_wait, atomic_read(&startup_count) == 0))
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+		pr_err("  wait_event interruptible failed\n");
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+	/* count is 0 now, set it to -1 and wake up all threads together */
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+	atomic_dec(&startup_count);
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+	wake_up_all(&startup_wait);
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 	for (i = 0; i < tcount; i++) {
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 		if (IS_ERR(tdata[i].task))
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 			continue;