Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1408401 > unrolled thread

[PATCH v2 0/5] fix some type infos and bugs for arm64/of numa

Back to article view | Back to linux.kernel

Contents

  [PATCH v2 0/5] fix some type infos and bugs for arm64/of numa Zhen Lei <thunder.leizhen@huawei.com> - 2016-05-28 11:30 +0200
    [PATCH v2 3/5] arm64/numa: add nid check for memory block Zhen Lei <thunder.leizhen@huawei.com> - 2016-05-28 11:30 +0200
    [PATCH v2 4/5] of/numa: remove a duplicated warning Zhen Lei <thunder.leizhen@huawei.com> - 2016-05-28 11:30 +0200
    [PATCH v2 5/5] arm64/numa: avoid inconsistent information to be printed Zhen Lei <thunder.leizhen@huawei.com> - 2016-05-28 11:30 +0200
    [PATCH v2 1/5] of/numa: remove a duplicated pr_debug information Zhen Lei <thunder.leizhen@huawei.com> - 2016-05-28 11:30 +0200

#1408401 — [PATCH v2 0/5] fix some type infos and bugs for arm64/of numa

v1 -> v2:
1. Base on https://lkml.org/lkml/2016/5/24/679
2. Rewrote of_numa_parse_memory_nodes according to Rob Herring's advice. So that it looks more clear.
3. Rewrote patch 5 because some scenes were not considered before.

Zhen Lei (5):
  of/numa: remove a duplicated pr_debug information
  of/numa: fix a memory@ node can only contains one memory block
  arm64/numa: add nid check for memory block
  of/numa: remove a duplicated warning
  arm64/numa: avoid inconsistent information to be printed

 arch/arm64/mm/numa.c | 11 ++++++++---
 drivers/of/of_numa.c | 42 ++++++++++++------------------------------
 2 files changed, 20 insertions(+), 33 deletions(-)

-- 
2.5.0

[toc] | [next] | [standalone]

#1408402 — [PATCH v2 3/5] arm64/numa: add nid check for memory block

Use the same tactic to cpu and numa-distance nodes.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
---
 arch/arm64/mm/numa.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c
index c7fe3ec..2601660 100644
--- a/arch/arm64/mm/numa.c
+++ b/arch/arm64/mm/numa.c
@@ -141,6 +141,11 @@ int __init numa_add_memblk(int nid, u64 start, u64 end)
 {
 	int ret;

+	if (nid >= MAX_NUMNODES) {
+		pr_warn("NUMA: Node id %u exceeds maximum value\n", nid);
+		return -EINVAL;
+	}
+
 	ret = memblock_set_node(start, (end - start), &memblock.memory, nid);
 	if (ret < 0) {
 		pr_err("NUMA: memblock [0x%llx - 0x%llx] failed to add on node %d\n",
--
2.5.0

[toc] | [prev] | [next] | [standalone]

#1408403 — [PATCH v2 4/5] of/numa: remove a duplicated warning

This warning has been printed in of_numa_parse_cpu_nodes before.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
---
 drivers/of/of_numa.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/of/of_numa.c b/drivers/of/of_numa.c
index fa85a51..fb62307 100644
--- a/drivers/of/of_numa.c
+++ b/drivers/of/of_numa.c
@@ -175,13 +175,8 @@ int of_node_to_nid(struct device_node *device)
 			np->name);
 	of_node_put(np);

-	if (!r) {
-		if (nid >= MAX_NUMNODES)
-			pr_warn("NUMA: Node id %u exceeds maximum value\n",
-				nid);
-		else
-			return nid;
-	}
+	if (!r)
+		return nid;

 	return NUMA_NO_NODE;
 }
--
2.5.0

[toc] | [prev] | [next] | [standalone]

#1408404 — [PATCH v2 5/5] arm64/numa: avoid inconsistent information to be printed

numa_init(of_numa_init) may returned error because of numa configuration
error. So "No NUMA configuration found" is inaccurate. In fact, specific
configuration error information should be immediately printed by the
testing branch.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
---
 arch/arm64/mm/numa.c | 6 +++---
 drivers/of/of_numa.c | 7 +++----
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c
index 2601660..1b9622c 100644
--- a/arch/arm64/mm/numa.c
+++ b/arch/arm64/mm/numa.c
@@ -338,8 +338,10 @@ static int __init numa_init(int (*init_func)(void))
 	if (ret < 0)
 		return ret;

-	if (nodes_empty(numa_nodes_parsed))
+	if (nodes_empty(numa_nodes_parsed)) {
+		pr_info("No NUMA configuration found\n");
 		return -EINVAL;
+	}

 	ret = numa_register_nodes();
 	if (ret < 0)
@@ -370,8 +372,6 @@ static int __init dummy_numa_init(void)

 	if (numa_off)
 		pr_info("NUMA disabled\n"); /* Forced off on command line. */
-	else
-		pr_info("No NUMA configuration found\n");
 	pr_info("NUMA: Faking a node at [mem %#018Lx-%#018Lx]\n",
 	       0LLU, PFN_PHYS(max_pfn) - 1);

diff --git a/drivers/of/of_numa.c b/drivers/of/of_numa.c
index fb62307..3157130 100644
--- a/drivers/of/of_numa.c
+++ b/drivers/of/of_numa.c
@@ -63,7 +63,7 @@ static int __init of_numa_parse_memory_nodes(void)
 	struct device_node *np = NULL;
 	struct resource rsrc;
 	u32 nid;
-	int i, r = 0;
+	int i, r;

 	for_each_node_by_type(np, "memory") {
 		r = of_property_read_u32(np, "numa-node-id", &nid);
@@ -81,12 +81,11 @@ static int __init of_numa_parse_memory_nodes(void)
 		if (!i || r) {
 			of_node_put(np);
 			pr_err("NUMA: bad property in memory node\n");
-			r = r ? : -EINVAL;
-			break;
+			return r ? : -EINVAL;
 		}
 	}

-	return r;
+	return 0;
 }

 static int __init of_numa_parse_distance_map_v1(struct device_node *map)
--
2.5.0

[toc] | [prev] | [next] | [standalone]

#1408405 — [PATCH v2 1/5] of/numa: remove a duplicated pr_debug information

This information will be printed in the subfunction numa_add_memblk.
They are not the same, but very similar.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
---
 drivers/of/of_numa.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/of/of_numa.c b/drivers/of/of_numa.c
index ed5a097..fb71b4e 100644
--- a/drivers/of/of_numa.c
+++ b/drivers/of/of_numa.c
@@ -88,10 +88,6 @@ static int __init of_numa_parse_memory_nodes(void)
 			break;
 		}

-		pr_debug("NUMA:  base = %llx len = %llx, node = %u\n",
-			 rsrc.start, rsrc.end - rsrc.start + 1, nid);
-
-
 		r = numa_add_memblk(nid, rsrc.start, rsrc.end + 1);
 		if (r)
 			break;
--
2.5.0

[toc] | [prev] | [standalone]

Back to top | Article view | linux.kernel

csiph-web