* [PATCH] x86, UV: blade-local memory
@ 2009-07-27 14:35 ` Jack Steiner
0 siblings, 0 replies; 3+ messages in thread
From: Jack Steiner @ 2009-07-27 14:35 UTC (permalink / raw)
To: mingo, tglx; +Cc: linux-mm, linux-kernel
UV blades may not have any blade-local memory. Add a field (nid) to the UV
blade structure to indicates whether the node has local memory.
This is needed by the GRU driver (pushed separately).
Signed-off-by: Jack Steiner <steiner@sgi.com>
---
arch/x86/include/asm/uv/uv_hub.h | 7 +++++++
arch/x86/kernel/apic/x2apic_uv_x.c | 5 +++++
2 files changed, 12 insertions(+)
Index: linux/arch/x86/include/asm/uv/uv_hub.h
===================================================================
--- linux.orig/arch/x86/include/asm/uv/uv_hub.h 2009-07-23 09:17:15.000000000 -0500
+++ linux/arch/x86/include/asm/uv/uv_hub.h 2009-07-23 09:44:41.000000000 -0500
@@ -327,6 +327,7 @@ struct uv_blade_info {
unsigned short nr_possible_cpus;
unsigned short nr_online_cpus;
unsigned short pnode;
+ short memory_nid;
};
extern struct uv_blade_info *uv_blade_info;
extern short *uv_node_to_blade;
@@ -363,6 +364,12 @@ static inline int uv_blade_to_pnode(int
return uv_blade_info[bid].pnode;
}
+/* Nid of memory node on blade. -1 if no blade-local memory */
+static inline int uv_blade_to_memory_nid(int bid)
+{
+ return uv_blade_info[bid].memory_nid;
+}
+
/* Determine the number of possible cpus on a blade */
static inline int uv_blade_nr_possible_cpus(int bid)
{
Index: linux/arch/x86/kernel/apic/x2apic_uv_x.c
===================================================================
--- linux.orig/arch/x86/kernel/apic/x2apic_uv_x.c 2009-07-23 09:17:15.000000000 -0500
+++ linux/arch/x86/kernel/apic/x2apic_uv_x.c 2009-07-23 09:44:41.000000000 -0500
@@ -592,6 +592,8 @@ void __init uv_system_init(void)
bytes = sizeof(struct uv_blade_info) * uv_num_possible_blades();
uv_blade_info = kmalloc(bytes, GFP_KERNEL);
BUG_ON(!uv_blade_info);
+ for (blade = 0; blade < uv_num_possible_blades(); blade++)
+ uv_blade_info[blade].memory_nid = -1;
get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
@@ -630,6 +632,9 @@ void __init uv_system_init(void)
lcpu = uv_blade_info[blade].nr_possible_cpus;
uv_blade_info[blade].nr_possible_cpus++;
+ /* Any node on the blade, else will contain -1. */
+ uv_blade_info[blade].memory_nid = nid;
+
uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
uv_cpu_hub_info(cpu)->lowmem_remap_top = lowmem_redir_size;
uv_cpu_hub_info(cpu)->m_val = m_val;
^ permalink raw reply [flat|nested] 3+ messages in thread* [PATCH] x86, UV: blade-local memory
@ 2009-07-27 14:35 ` Jack Steiner
0 siblings, 0 replies; 3+ messages in thread
From: Jack Steiner @ 2009-07-27 14:35 UTC (permalink / raw)
To: mingo, tglx; +Cc: linux-mm, linux-kernel
UV blades may not have any blade-local memory. Add a field (nid) to the UV
blade structure to indicates whether the node has local memory.
This is needed by the GRU driver (pushed separately).
Signed-off-by: Jack Steiner <steiner@sgi.com>
---
arch/x86/include/asm/uv/uv_hub.h | 7 +++++++
arch/x86/kernel/apic/x2apic_uv_x.c | 5 +++++
2 files changed, 12 insertions(+)
Index: linux/arch/x86/include/asm/uv/uv_hub.h
===================================================================
--- linux.orig/arch/x86/include/asm/uv/uv_hub.h 2009-07-23 09:17:15.000000000 -0500
+++ linux/arch/x86/include/asm/uv/uv_hub.h 2009-07-23 09:44:41.000000000 -0500
@@ -327,6 +327,7 @@ struct uv_blade_info {
unsigned short nr_possible_cpus;
unsigned short nr_online_cpus;
unsigned short pnode;
+ short memory_nid;
};
extern struct uv_blade_info *uv_blade_info;
extern short *uv_node_to_blade;
@@ -363,6 +364,12 @@ static inline int uv_blade_to_pnode(int
return uv_blade_info[bid].pnode;
}
+/* Nid of memory node on blade. -1 if no blade-local memory */
+static inline int uv_blade_to_memory_nid(int bid)
+{
+ return uv_blade_info[bid].memory_nid;
+}
+
/* Determine the number of possible cpus on a blade */
static inline int uv_blade_nr_possible_cpus(int bid)
{
Index: linux/arch/x86/kernel/apic/x2apic_uv_x.c
===================================================================
--- linux.orig/arch/x86/kernel/apic/x2apic_uv_x.c 2009-07-23 09:17:15.000000000 -0500
+++ linux/arch/x86/kernel/apic/x2apic_uv_x.c 2009-07-23 09:44:41.000000000 -0500
@@ -592,6 +592,8 @@ void __init uv_system_init(void)
bytes = sizeof(struct uv_blade_info) * uv_num_possible_blades();
uv_blade_info = kmalloc(bytes, GFP_KERNEL);
BUG_ON(!uv_blade_info);
+ for (blade = 0; blade < uv_num_possible_blades(); blade++)
+ uv_blade_info[blade].memory_nid = -1;
get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
@@ -630,6 +632,9 @@ void __init uv_system_init(void)
lcpu = uv_blade_info[blade].nr_possible_cpus;
uv_blade_info[blade].nr_possible_cpus++;
+ /* Any node on the blade, else will contain -1. */
+ uv_blade_info[blade].memory_nid = nid;
+
uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
uv_cpu_hub_info(cpu)->lowmem_remap_top = lowmem_redir_size;
uv_cpu_hub_info(cpu)->m_val = m_val;
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^ permalink raw reply [flat|nested] 3+ messages in thread* [tip:x86/urgent] x86, UV: Handle missing blade-local memory correctly
2009-07-27 14:35 ` Jack Steiner
(?)
@ 2009-08-04 15:31 ` tip-bot for Jack Steiner
-1 siblings, 0 replies; 3+ messages in thread
From: tip-bot for Jack Steiner @ 2009-08-04 15:31 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, steiner, tglx, mingo
Commit-ID: 6c7184b77464261b7d55583a48accbd1350923a3
Gitweb: http://git.kernel.org/tip/6c7184b77464261b7d55583a48accbd1350923a3
Author: Jack Steiner <steiner@sgi.com>
AuthorDate: Mon, 27 Jul 2009 09:35:07 -0500
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 4 Aug 2009 16:18:01 +0200
x86, UV: Handle missing blade-local memory correctly
UV blades may not have any blade-local memory. Add a field
(nid) to the UV blade structure to indicates whether the node
has local memory. This is needed by the GRU driver (pushed
separately).
Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: linux-mm@kvack.org
LKML-Reference: <20090727143507.GA7006@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/include/asm/uv/uv_hub.h | 7 +++++++
arch/x86/kernel/apic/x2apic_uv_x.c | 5 +++++
2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/uv/uv_hub.h b/arch/x86/include/asm/uv/uv_hub.h
index 341070f..a6dde05 100644
--- a/arch/x86/include/asm/uv/uv_hub.h
+++ b/arch/x86/include/asm/uv/uv_hub.h
@@ -327,6 +327,7 @@ struct uv_blade_info {
unsigned short nr_possible_cpus;
unsigned short nr_online_cpus;
unsigned short pnode;
+ short memory_nid;
};
extern struct uv_blade_info *uv_blade_info;
extern short *uv_node_to_blade;
@@ -363,6 +364,12 @@ static inline int uv_blade_to_pnode(int bid)
return uv_blade_info[bid].pnode;
}
+/* Nid of memory node on blade. -1 if no blade-local memory */
+static inline int uv_blade_to_memory_nid(int bid)
+{
+ return uv_blade_info[bid].memory_nid;
+}
+
/* Determine the number of possible cpus on a blade */
static inline int uv_blade_nr_possible_cpus(int bid)
{
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 096d19a..ad3f0a9 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -591,6 +591,8 @@ void __init uv_system_init(void)
bytes = sizeof(struct uv_blade_info) * uv_num_possible_blades();
uv_blade_info = kmalloc(bytes, GFP_KERNEL);
BUG_ON(!uv_blade_info);
+ for (blade = 0; blade < uv_num_possible_blades(); blade++)
+ uv_blade_info[blade].memory_nid = -1;
get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
@@ -629,6 +631,9 @@ void __init uv_system_init(void)
lcpu = uv_blade_info[blade].nr_possible_cpus;
uv_blade_info[blade].nr_possible_cpus++;
+ /* Any node on the blade, else will contain -1. */
+ uv_blade_info[blade].memory_nid = nid;
+
uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
uv_cpu_hub_info(cpu)->lowmem_remap_top = lowmem_redir_size;
uv_cpu_hub_info(cpu)->m_val = m_val;
^ permalink raw reply related [flat|nested] 3+ messages in thread
end of thread, other threads:[~2009-08-04 15:31 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2009-07-27 14:35 [PATCH] x86, UV: blade-local memory Jack Steiner
2009-07-27 14:35 ` Jack Steiner
2009-08-04 15:31 ` [tip:x86/urgent] x86, UV: Handle missing blade-local memory correctly tip-bot for Jack Steiner
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