add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/mm/percpu-km.c
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@@ -1,10 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * mm/percpu-km.c - kernel memory based chunk allocation
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  *
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  * Copyright (C) 2010		SUSE Linux Products GmbH
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  * Copyright (C) 2010		Tejun Heo <tj@kernel.org>
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- *
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- * This file is released under the GPLv2.
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  *
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  * Chunks are allocated as a contiguous kernel memory using gfp
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  * allocation.  This is to be used on nommu architectures.
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@@ -45,7 +44,8 @@
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 	/* nada */
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 }
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-static struct pcpu_chunk *pcpu_create_chunk(gfp_t gfp)
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+static struct pcpu_chunk *pcpu_create_chunk(enum pcpu_chunk_type type,
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+					    gfp_t gfp)
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 {
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 	const int nr_pages = pcpu_group_sizes[0] >> PAGE_SHIFT;
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 	struct pcpu_chunk *chunk;
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@@ -53,7 +53,7 @@
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 	unsigned long flags;
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 	int i;
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-	chunk = pcpu_alloc_chunk(gfp);
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+	chunk = pcpu_alloc_chunk(type, gfp);
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 	if (!chunk)
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 		return NULL;
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@@ -67,10 +67,10 @@
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 		pcpu_set_page_chunk(nth_page(pages, i), chunk);
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 	chunk->data = pages;
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-	chunk->base_addr = page_address(pages) - pcpu_group_offsets[0];
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+	chunk->base_addr = page_address(pages);
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 	spin_lock_irqsave(&pcpu_lock, flags);
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-	pcpu_chunk_populated(chunk, 0, nr_pages, false);
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+	pcpu_chunk_populated(chunk, 0, nr_pages);
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 	spin_unlock_irqrestore(&pcpu_lock, flags);
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 	pcpu_stats_chunk_alloc();