On 16.07.24 13:13, Mike Rapoport wrote:
From: "Mike Rapoport (Microsoft)" <r...@kernel.org>
Architectures that support NUMA duplicate the code that allocates
NODE_DATA on the node-local memory with slight variations in reporting
of the addresses where the memory was allocated.
Use x86 version as the basis for the generic alloc_node_data() function
and call this function in architecture specific numa initialization.
Signed-off-by: Mike Rapoport (Microsoft) <r...@kernel.org>
---
[...]
diff --git a/arch/mips/loongson64/numa.c b/arch/mips/loongson64/numa.c
index 9208eaadf690..909f6cec3a26 100644
--- a/arch/mips/loongson64/numa.c
+++ b/arch/mips/loongson64/numa.c
@@ -81,12 +81,8 @@ static void __init init_topology_matrix(void)
static void __init node_mem_init(unsigned int node)
{
- struct pglist_data *nd;
unsigned long node_addrspace_offset;
unsigned long start_pfn, end_pfn;
- unsigned long nd_pa;
- int tnid;
- const size_t nd_size = roundup(sizeof(pg_data_t), SMP_CACHE_BYTES);
One interesting change is that we now always round up to full pages on
architectures where we previously rounded up to SMP_CACHE_BYTES.
I assume we don't really expect a significant growth in memory
consumption that we care about, especially because most systems with
many nodes also have quite some memory around.
-/* Allocate NODE_DATA for a node on the local memory */
-static void __init alloc_node_data(int nid)
-{
- const size_t nd_size = roundup(sizeof(pg_data_t), PAGE_SIZE);
- u64 nd_pa;
- void *nd;
- int tnid;
-
- /*
- * Allocate node data. Try node-local memory and then any node.
- * Never allocate in DMA zone.
- */
- nd_pa = memblock_phys_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid);
- if (!nd_pa) {
- pr_err("Cannot find %zu bytes in any node (initial node: %d)\n",
- nd_size, nid);
- return;
- }
- nd = __va(nd_pa);
-
- /* report and initialize */
- printk(KERN_INFO "NODE_DATA(%d) allocated [mem %#010Lx-%#010Lx]\n", nid,
- nd_pa, nd_pa + nd_size - 1);
- tnid = early_pfn_to_nid(nd_pa >> PAGE_SHIFT);
- if (tnid != nid)
- printk(KERN_INFO " NODE_DATA(%d) on node %d\n", nid, tnid);
-
- node_data[nid] = nd;
- memset(NODE_DATA(nid), 0, sizeof(pg_data_t));
-
- node_set_online(nid);
-}
-
/**
* numa_cleanup_meminfo - Cleanup a numa_meminfo
* @mi: numa_meminfo to clean up
@@ -571,6 +538,7 @@ static int __init numa_register_memblks(struct numa_meminfo
*mi)
continue;
alloc_node_data(nid);
+ node_set_online(nid);
}
I can spot that we only remove a single node_set_online() call from x86.
What about all the other architectures? Will there be any change in
behavior for them? Or do we simply set the nodes online later once more?
--
Cheers,
David / dhildenb
