ACPI / x86: Print Hot-Pluggable Field in SRAT.

The Hot-Pluggable field in SRAT suggests if the memory could be
hotplugged while the system is running. Print it as well when
parsing SRAT will help users to know which memory is hotpluggable.

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Reviewed-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/arch/x86/mm/srat.c b/arch/x86/mm/srat.c
index cdd0da9dd530b643c5c8f8673f7ae76c5fb8602c..266ca912f62e00e96eab405ce6290f3d7466cec3 100644 (file)
--- a/arch/x86/mm/srat.c
+++ b/arch/x86/mm/srat.c
@@ -146,6 +146,7 @@ int __init
 acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
 {
        u64 start, end;
+       u32 hotpluggable;
        int node, pxm;
 
        if (srat_disabled())
@@ -154,7 +155,8 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
                goto out_err_bad_srat;
        if ((ma->flags & ACPI_SRAT_MEM_ENABLED) == 0)
                goto out_err;
-       if ((ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE) && !save_add_info())
+       hotpluggable = ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE;
+       if (hotpluggable && !save_add_info())
                goto out_err;
 
        start = ma->base_address;
@@ -174,9 +176,10 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
 
        node_set(node, numa_nodes_parsed);
 
-       printk(KERN_INFO "SRAT: Node %u PXM %u [mem %#010Lx-%#010Lx]\n",
-              node, pxm,
-              (unsigned long long) start, (unsigned long long) end - 1);
+       pr_info("SRAT: Node %u PXM %u [mem %#010Lx-%#010Lx]%s\n",
+               node, pxm,
+               (unsigned long long) start, (unsigned long long) end - 1,
+               hotpluggable ? " hotplug" : "");
 
        return 0;
 out_err_bad_srat: