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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/arch/arm64/mm/ptdump_debugfs.c
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@@ -1,5 +1,6 @@
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 // SPDX-License-Identifier: GPL-2.0
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 #include <linux/debugfs.h>
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+#include <linux/memory_hotplug.h>
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 #include <linux/seq_file.h>
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 #include <asm/ptdump.h>
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@@ -7,15 +8,15 @@
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 static int ptdump_show(struct seq_file *m, void *v)
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 {
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 	struct ptdump_info *info = m->private;
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-	ptdump_walk_pgd(m, info);
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+
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+	get_online_mems();
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+	ptdump_walk(m, info);
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+	put_online_mems();
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 	return 0;
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 }
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 DEFINE_SHOW_ATTRIBUTE(ptdump);
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-int ptdump_debugfs_register(struct ptdump_info *info, const char *name)
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+void ptdump_debugfs_register(struct ptdump_info *info, const char *name)
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 {
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-	struct dentry *pe;
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-	pe = debugfs_create_file(name, 0400, NULL, info, &ptdump_fops);
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-	return pe ? 0 : -ENOMEM;
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-
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+	debugfs_create_file(name, 0400, NULL, info, &ptdump_fops);
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 }