From: Nathan Fontenot <nfont@linux•vnet.ibm.com>
To: linuxppc-dev@lists•ozlabs.org
Subject: [PATCH v3 9/12] Update NUMA VDSO information
Date: Mon, 22 Apr 2013 13:45:20 -0500 [thread overview]
Message-ID: <51758540.901@linux.vnet.ibm.com> (raw)
In-Reply-To: <51757951.2080007@linux.vnet.ibm.com>
From: Jesse Larrew <jlarrew@linux•vnet.ibm.com>
The following patch adds vdso_getcpu_init(), which stores the NUMA node for
a cpu in SPRG3:
Commit 18ad51dd34 ("powerpc: Add VDSO version of getcpu") adds
vdso_getcpu_init(), which stores the NUMA node for a cpu in SPRG3.
This patch ensures that this information is also updated when the NUMA
affinity of a cpu changes.
Signed-off-by: Nathan Fontenot <nfont@linux•vnet.ibm.com>
---
arch/powerpc/mm/numa.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
Index: powerpc/arch/powerpc/mm/numa.c
===================================================================
--- powerpc.orig/arch/powerpc/mm/numa.c 2013-04-18 09:10:11.000000000 -0500
+++ powerpc/arch/powerpc/mm/numa.c 2013-04-22 09:39:02.000000000 -0500
@@ -30,6 +30,7 @@
#include <asm/paca.h>
#include <asm/hvcall.h>
#include <asm/setup.h>
+#include <asm/vdso.h>
static int numa_enabled = 1;
@@ -1434,6 +1435,7 @@
unregister_cpu_under_node(update->cpu, update->old_nid);
unmap_cpu_from_node(update->cpu);
map_cpu_to_node(update->cpu, update->new_nid);
+ vdso_getcpu_init();
register_cpu_under_node(update->cpu, update->new_nid);
}
@@ -1449,6 +1451,7 @@
unsigned int cpu, changed = 0;
struct topology_update_data *updates, *ud;
unsigned int associativity[VPHN_ASSOC_BUFSIZE] = {0};
+ cpumask_t updated_cpus;
struct device *dev;
int weight, i = 0;
@@ -1460,6 +1463,8 @@
if (!updates)
return 0;
+ cpumask_clear(&updated_cpus);
+
for_each_cpu(cpu, &cpu_associativity_changes_mask) {
ud = &updates[i++];
ud->cpu = cpu;
@@ -1470,12 +1475,13 @@
ud->new_nid = first_online_node;
ud->old_nid = numa_cpu_lookup_table[cpu];
+ cpumask_set_cpu(cpu, &updated_cpus);
if (i < weight)
ud->next = &updates[i];
}
- stop_machine(update_cpu_topology, &updates[0], cpu_online_mask);
+ stop_machine(update_cpu_topology, &updates[0], &updated_cpus);
for (ud = &updates[0]; ud; ud = ud->next) {
dev = get_cpu_device(ud->cpu);
next prev parent reply other threads:[~2013-04-22 18:45 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-22 17:54 [PATCH v3 0/12] NUMA CPU Reconfiguration using PRRN Nathan Fontenot
2013-04-22 18:30 ` [PATCH v3 1/12] Create a powerpc update_devicetree interface Nathan Fontenot
2013-04-23 0:15 ` Benjamin Herrenschmidt
2013-04-23 18:46 ` Nathan Fontenot
2013-04-23 20:54 ` Benjamin Herrenschmidt
2013-04-22 18:31 ` [PATCH v3 2/12] Correct buffer parsing in update-properties Nathan Fontenot
2013-04-22 18:33 ` [PATCH v3 3/12] Add PRRN event handler Nathan Fontenot
2013-04-22 18:35 ` [PATCH v3 4/12] Move architecture vector definitions to prom.h Nathan Fontenot
2013-04-23 0:18 ` Benjamin Herrenschmidt
2013-04-22 18:38 ` [PATCH v3 5/12] Update firmware_has_feature() to check architecture bits Nathan Fontenot
2013-04-23 1:50 ` Stephen Rothwell
2013-04-23 18:56 ` Nathan Fontenot
2013-04-23 1:52 ` Stephen Rothwell
2013-04-22 18:40 ` [PATCH v3 6/12] Update numa.c to use updated firmware_has_feature() Nathan Fontenot
2013-04-22 18:41 ` [PATCH v3 7/12] Use stop machine to update cpu maps Nathan Fontenot
2013-04-23 0:24 ` Benjamin Herrenschmidt
2013-04-23 18:58 ` Nathan Fontenot
2013-04-22 18:44 ` [PATCH v3 8/12] " Nathan Fontenot
2013-04-22 18:45 ` Nathan Fontenot [this message]
2013-04-22 18:46 ` [PATCH v3 10/12] Re-enable Virtual Private Home Node capabilities Nathan Fontenot
2013-04-22 18:47 ` [PATCH v3 11/12] Enable PRRN Event handling Nathan Fontenot
2013-04-22 18:47 ` [PATCH v3 12/12] Add /proc interface to control topology updates Nathan Fontenot
2013-04-23 2:00 ` Stephen Rothwell
2013-04-23 2:49 ` Michael Ellerman
2013-04-23 18:59 ` Nathan Fontenot
2013-04-23 2:02 ` Stephen Rothwell
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