[PATCH v2 4/5] x86/platform/uv: Add deprecated messages to /proc info leaves

[Mike Travis]

Add "deprecated" message to any access to old /proc/sgi_uv/* leaves.

Signed-off-by: Mike Travis <mike.travis@xxxxxxx>
Reviewed-by: Steve Wahl <steve.wahl@xxxxxxx>
---
 arch/x86/kernel/apic/x2apic_uv_x.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 48746031b39a..4248579825fb 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -1615,21 +1615,33 @@ static void check_efi_reboot(void)
 		reboot_type = BOOT_ACPI;
 }
 
-/* Setup user proc fs files */
+/*
+ * User proc fs file handling now deprecated.
+ * Recommend using /sys/firmware/sgi_uv/... instead.
+ */
 static int __maybe_unused proc_hubbed_show(struct seq_file *file, void *data)
 {
+	pr_notice_once(
+		"%s: using deprecated /proc/sgi_uv/hubbed, use /sys/firmware/sgi_uv/hub_type\n",
+		current->comm);
 	seq_printf(file, "0x%x\n", uv_hubbed_system);
 	return 0;
 }
 
 static int __maybe_unused proc_hubless_show(struct seq_file *file, void *data)
 {
+	pr_notice_once(
+		"%s: using deprecated /proc/sgi_uv/hubless, use /sys/firmware/sgi_uv/hubless\n",
+		current->comm);
 	seq_printf(file, "0x%x\n", uv_hubless_system);
 	return 0;
 }
 
 static int __maybe_unused proc_archtype_show(struct seq_file *file, void *data)
 {
+	pr_notice_once(
+		"%s: using deprecated /proc/sgi_uv/archtype, use /sys/firmware/sgi_uv/archtype\n",
+		current->comm);
 	seq_printf(file, "%s/%s\n", uv_archtype, oem_table_id);
 	return 0;
 }
-- 
2.21.0