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Groups > linux.kernel > #1506886
| From | Anshuman Khandual <khandual@linux.vnet.ibm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [DEBUG 05/10] powerpc/mm: Identify isolation seeking coherent memory nodes during boot |
| Date | 2016-10-24 06:50 +0200 |
| Message-ID | <svFmW-2IU-11@gated-at.bofh.it> (permalink) |
| References | <svFdf-2Fn-3@gated-at.bofh.it> <svFmV-2IU-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Isolation seeking coherent memory nodes which wish to be MNODE_ISOLATION
in core VM will have "ibm,hotplug-aperture" as one of the compatible
properties in their respective device nodes in device tree. Detect them
during platform NUMA initialization and mark their respective coherent
mask in pglist_data structure as MNODE_ISOLATION.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
---
arch/powerpc/mm/numa.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 5010181..89ae64c 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -64,6 +64,7 @@ static int form1_affinity;
static int distance_ref_points_depth;
static const __be32 *distance_ref_points;
static int distance_lookup_table[MAX_NUMNODES][MAX_DISTANCE_REF_POINTS];
+static int node_to_phys_device_map[MAX_NUMNODES];
/*
* Allocate node_to_cpumask_map based on number of available nodes
@@ -714,6 +715,17 @@ static const struct of_device_id memory_match[] = {
{ /* sentinel */ }
};
+int arch_get_memory_phys_device(unsigned long start_pfn)
+{
+ return node_to_phys_device_map[pfn_to_nid(start_pfn)];
+}
+
+int special_mem_node(int nid)
+{
+ return node_to_phys_device_map[nid];
+}
+EXPORT_SYMBOL(special_mem_node);
+
static int __init parse_numa_properties(void)
{
struct device_node *memory;
@@ -789,6 +801,9 @@ static int __init parse_numa_properties(void)
if (nid < 0)
nid = default_nid;
+ if (of_device_is_compatible(memory, "ibm,hotplug-aperture"))
+ node_to_phys_device_map[nid] = 1;
+
fake_numa_create_new_node(((start + size) >> PAGE_SHIFT), &nid);
node_set_online(nid);
@@ -908,6 +923,11 @@ static void __init setup_node_data(int nid, u64 start_pfn, u64 end_pfn)
NODE_DATA(nid)->node_id = nid;
NODE_DATA(nid)->node_start_pfn = start_pfn;
NODE_DATA(nid)->node_spanned_pages = spanned_pages;
+
+#ifdef CONFIG_COHERENT_DEVICE
+ if (special_mem_node(nid))
+ set_cdm_isolation(nid);
+#endif
}
void __init initmem_init(void)
--
2.1.0
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[RFC 0/8] Define coherent device memory node Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:40 +0200
[RFC 3/8] mm: Isolate coherent device memory nodes from HugeTLB allocation paths Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:40 +0200
Re: [RFC 3/8] mm: Isolate coherent device memory nodes from HugeTLB allocation paths Dave Hansen <dave.hansen@intel.com> - 2016-10-24 19:20 +0200
Re: [RFC 3/8] mm: Isolate coherent device memory nodes from HugeTLB allocation paths "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> - 2016-10-25 06:20 +0200
Re: [RFC 3/8] mm: Isolate coherent device memory nodes from HugeTLB allocation paths Balbir Singh <bsingharora@gmail.com> - 2016-10-25 09:20 +0200
Re: [RFC 3/8] mm: Isolate coherent device memory nodes from HugeTLB allocation paths Balbir Singh <bsingharora@gmail.com> - 2016-10-25 09:30 +0200
[RFC 7/8] mm: Add a new migration function migrate_virtual_range() Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:40 +0200
[DEBUG 06/10] mm: Export definition of 'zone_names' array through mmzone.h Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:50 +0200
[DEBUG 00/10] Test and debug patches for coherent device memory Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:50 +0200
[DEBUG 02/10] powerpc/mm: Create numa nodes for hotplug memory Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:50 +0200
[DEBUG 03/10] powerpc/mm: Allow memory hotplug into a memory less node Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:50 +0200
[DEBUG 08/10] powerpc: Enable CONFIG_MOVABLE_NODE for PPC64 platform Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:50 +0200
[DEBUG 01/10] dt-bindings: Add doc for ibm,hotplug-aperture Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:50 +0200
[DEBUG 05/10] powerpc/mm: Identify isolation seeking coherent memory nodes during boot Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:50 +0200
[DEBUG 10/10] test: Add a script to perform random VMA migrations across nodes Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:50 +0200
[DEBUG 07/10] mm: Add debugfs interface to dump each node's zonelist information Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:50 +0200
[DEBUG 04/10] mm: Enable CONFIG_MOVABLE_NODE on powerpc Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:50 +0200
[DEBUG 09/10] drivers: Add two drivers for coherent device memory tests Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-24 06:50 +0200
Re: [RFC 0/8] Define coherent device memory node Jerome Glisse <j.glisse@gmail.com> - 2016-10-24 19:10 +0200
Re: [RFC 0/8] Define coherent device memory node "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> - 2016-10-25 06:30 +0200
Re: [RFC 0/8] Define coherent device memory node Jerome Glisse <j.glisse@gmail.com> - 2016-10-25 17:20 +0200
Re: [RFC 0/8] Define coherent device memory node "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> - 2016-10-26 13:10 +0200
Re: [RFC 0/8] Define coherent device memory node Jerome Glisse <j.glisse@gmail.com> - 2016-10-26 18:10 +0200
Re: [RFC 0/8] Define coherent device memory node "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> - 2016-10-25 07:10 +0200
Re: [RFC 0/8] Define coherent device memory node Jerome Glisse <j.glisse@gmail.com> - 2016-10-25 17:40 +0200
Re: [RFC 0/8] Define coherent device memory node "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> - 2016-10-25 19:40 +0200
Re: [RFC 0/8] Define coherent device memory node Jerome Glisse <j.glisse@gmail.com> - 2016-10-25 21:00 +0200
Re: [RFC 0/8] Define coherent device memory node Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-26 13:20 +0200
Re: [RFC 0/8] Define coherent device memory node Jerome Glisse <j.glisse@gmail.com> - 2016-10-26 18:10 +0200
Re: [RFC 0/8] Define coherent device memory node Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2016-10-26 15:00 +0200
Re: [RFC 0/8] Define coherent device memory node Jerome Glisse <j.glisse@gmail.com> - 2016-10-26 18:30 +0200
Re: [RFC 0/8] Define coherent device memory node Balbir Singh <bsingharora@gmail.com> - 2016-10-25 14:10 +0200
Re: [RFC 0/8] Define coherent device memory node Jerome Glisse <j.glisse@gmail.com> - 2016-10-25 17:30 +0200
Re: [RFC 0/8] Define coherent device memory node Dave Hansen <dave.hansen@intel.com> - 2016-10-24 20:10 +0200
Re: [RFC 0/8] Define coherent device memory node David Nellans <dnellans@nvidia.com> - 2016-10-24 20:40 +0200
Re: [RFC 0/8] Define coherent device memory node Dave Hansen <dave.hansen@intel.com> - 2016-10-24 21:40 +0200
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