Since we are using struct numa_meminfo to store SRAT info, and sanitize
movablemem_map.map[], we need hotplug info in struct numa_meminfo.
This patch introduces a "bool hotpluggable" member into struct
numa_meminfo.
And modifies the following APIs' prototypes to support it:
- numa_add_memblk()
- numa_add_memblk_to()
And the following callers:
- numaq_register_node()
- dummy_numa_init()
- amd_numa_init()
- acpi_numa_memory_affinity_init() in x86
Signed-off-by: Tang Chen <tangchen@xxxxxxxxxxxxxx>
---
arch/x86/include/asm/numa.h | 3 ++-
arch/x86/kernel/apic/numaq_32.c | 2 +-
arch/x86/mm/amdtopology.c | 3 ++-
arch/x86/mm/numa.c | 10 +++++++---
arch/x86/mm/numa_internal.h | 1 +
arch/x86/mm/srat.c | 2 +-
6 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/arch/x86/include/asm/numa.h b/arch/x86/include/asm/numa.h
index 1b99ee5..73096b2 100644
--- a/arch/x86/include/asm/numa.h
+++ b/arch/x86/include/asm/numa.h
@@ -31,7 +31,8 @@ extern int numa_off;
extern s16 __apicid_to_node[MAX_LOCAL_APIC];
extern nodemask_t numa_nodes_parsed __initdata;
-extern int __init numa_add_memblk(int nodeid, u64 start, u64 end);
+extern int __init numa_add_memblk(int nodeid, u64 start, u64 end,
+ bool hotpluggable);
extern void __init numa_set_distance(int from, int to, int distance);
static inline void set_apicid_to_node(int apicid, s16 node)
diff --git a/arch/x86/kernel/apic/numaq_32.c b/arch/x86/kernel/apic/numaq_32.c
index d661ee9..7a9c542 100644
--- a/arch/x86/kernel/apic/numaq_32.c
+++ b/arch/x86/kernel/apic/numaq_32.c
@@ -82,7 +82,7 @@ static inline void numaq_register_node(int node, struct sys_cfg_data *scd)
int ret;
node_set(node, numa_nodes_parsed);
- ret = numa_add_memblk(node, start, end);
+ ret = numa_add_memblk(node, start, end, false);
BUG_ON(ret < 0);
}
diff --git a/arch/x86/mm/amdtopology.c b/arch/x86/mm/amdtopology.c
index 5247d01..d521471 100644
--- a/arch/x86/mm/amdtopology.c
+++ b/arch/x86/mm/amdtopology.c
@@ -167,7 +167,8 @@ int __init amd_numa_init(void)
nodeid, base, limit);
prevbase = base;
- numa_add_memblk(nodeid, base, limit);
+ /* Do not support memory hotplug for AMD cpu. */
+ numa_add_memblk(nodeid, base, limit, false);
node_set(nodeid, numa_nodes_parsed);
}
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 4cf3b49..5f98bb5 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -142,6 +142,7 @@ void __init setup_node_to_cpumask_map(void)
}
static int __init numa_add_memblk_to(int nid, u64 start, u64 end,
+ bool hotpluggable,
struct numa_meminfo *mi)
{
/* ignore zero length blks */
@@ -163,6 +164,7 @@ static int __init numa_add_memblk_to(int nid, u64 start, u64 end,
mi->blk[mi->nr_blks].start = start;
mi->blk[mi->nr_blks].end = end;
mi->blk[mi->nr_blks].nid = nid;
+ mi->blk[mi->nr_blks].hotpluggable = hotpluggable;
mi->nr_blks++;
return 0;
}
@@ -187,15 +189,17 @@ void __init numa_remove_memblk_from(int idx, struct numa_meminfo *mi)
* @nid: NUMA node ID of the new memblk
* @start: Start address of the new memblk
* @end: End address of the new memblk
+ * @hotpluggable: True if memblk is hotpluggable
*
* Add a new memblk to the default numa_meminfo.
*
* RETURNS:
* 0 on success, -errno on failure.
*/
-int __init numa_add_memblk(int nid, u64 start, u64 end)
+int __init numa_add_memblk(int nid, u64 start, u64 end,
+ bool hotpluggable)
{
- return numa_add_memblk_to(nid, start, end, &numa_meminfo);
+ return numa_add_memblk_to(nid, start, end, hotpluggable, &numa_meminfo);
}
/* Initialize NODE_DATA for a node on the local memory */
@@ -644,7 +648,7 @@ static int __init dummy_numa_init(void)
0LLU, PFN_PHYS(max_pfn) - 1);
node_set(0, numa_nodes_parsed);
- numa_add_memblk(0, 0, PFN_PHYS(max_pfn));
+ numa_add_memblk(0, 0, PFN_PHYS(max_pfn), false);
return 0;
}
diff --git a/arch/x86/mm/numa_internal.h b/arch/x86/mm/numa_internal.h
index bb2fbcc..1ce4e6b 100644
--- a/arch/x86/mm/numa_internal.h
+++ b/arch/x86/mm/numa_internal.h
@@ -8,6 +8,7 @@ struct numa_memblk {
u64 start;
u64 end;
int nid;
+ bool hotpluggable;
};
struct numa_meminfo {
diff --git a/arch/x86/mm/srat.c b/arch/x86/mm/srat.c
index 4f443de..76c2eb4 100644
--- a/arch/x86/mm/srat.c
+++ b/arch/x86/mm/srat.c
@@ -290,7 +290,7 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
goto out_err_bad_srat;
}
- if (numa_add_memblk(node, start, end) < 0)
+ if (numa_add_memblk(node, start, end, hotpluggable) < 0)
goto out_err_bad_srat;
node_set(node, numa_nodes_parsed);
--
1.7.1
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