powerpc/64s/hash: Hash hpt_order should be only available with Hash MMU

riteshharjani · maddy-kerneldev · commit b80691e25ec6 · 2025-11-18T12:35:52.000+05:30
This disables creating hpt_order debugfs entry with radix mode. Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/99237176a51c73e85f4a7edd60a2460017882d69.1761834163.git.ritesh.list@gmail.com
diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c
@@ -2434,6 +2434,8 @@ DEFINE_DEBUGFS_ATTRIBUTE(fops_hpt_order, hpt_order_get, hpt_order_set, "%llu\n")
 
 static int __init hash64_debugfs(void)
 {
+	if (radix_enabled())
+		return 0;
 	debugfs_create_file("hpt_order", 0600, arch_debugfs_dir, NULL,
 			    &fops_hpt_order);
 	return 0;

Original file line number	Diff line number	Diff line change
`@@ -2434,6 +2434,8 @@ DEFINE_DEBUGFS_ATTRIBUTE(fops_hpt_order, hpt_order_get, hpt_order_set, "%llu\n")`
`2434`	`2434`
`2435`	`2435`	`static int __init hash64_debugfs(void)`
`2436`	`2436`	`{`
	`2437`	`+ if (radix_enabled())`
	`2438`	`+ return 0;`
`2437`	`2439`	`debugfs_create_file("hpt_order", 0600, arch_debugfs_dir, NULL,`
`2438`	`2440`	`&fops_hpt_order);`
`2439`	`2441`	`return 0;`