From: Geoff Levand <geoffrey.levand@am•sony.com>
To: Benjamin Herrenschmidt <benh@kernel•crashing.org>
Cc: Linuxppc-dev@ozlabs•org
Subject: [RFC patch] powerpc: Add topology_ready to machdep calls
Date: Wed, 11 Feb 2009 15:30:09 -0800 [thread overview]
Message-ID: <49935F81.7060203@am.sony.com> (raw)
Add a new member topology_ready to the powerpc machdep_calls
structure.
The NUMA hot plug memory routines require the NUMA node to have
been registered via register_one_node() prior to adding memory
to the node. The powerpc arch registers NUMA nodes during
startup in its topology_init() routine.
Currently, there is no mechanism for the platform code to know
when the nodes have been registered, and hence, when it is safe
to add hot plug memory.
Signed-off-by: Geoff Levand <geoffrey.levand@am•sony.com>
---
arch/powerpc/include/asm/machdep.h | 1 +
arch/powerpc/kernel/sysfs.c | 3 +++
2 files changed, 4 insertions(+)
--- a/arch/powerpc/include/asm/machdep.h
+++ b/arch/powerpc/include/asm/machdep.h
@@ -106,6 +106,7 @@ struct machdep_calls {
void (*setup_arch)(void); /* Optional, may be NULL */
void (*init_early)(void);
/* Optional, may be NULL. */
+ void (*topology_ready)(void); /* Optional, may be NULL */
void (*show_cpuinfo)(struct seq_file *m);
void (*show_percpuinfo)(struct seq_file *m, int i);
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -647,6 +647,9 @@ static int __init topology_init(void)
register_cpu_online(cpu);
}
+ if (ppc_md.topology_ready)
+ ppc_md.topology_ready();
+
return 0;
}
subsys_initcall(topology_init);
next reply other threads:[~2009-02-11 23:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-11 23:30 Geoff Levand [this message]
2009-02-11 23:31 ` [RFC patch] powerpc/ps3: Add ps3_topology_ready routine Geoff Levand
2009-02-12 4:21 ` [RFC patch] powerpc: Add topology_ready to machdep calls Benjamin Herrenschmidt
2009-02-12 4:21 ` Benjamin Herrenschmidt
2009-02-12 22:36 ` [patch] powerpc/ps3: Move ps3_mm_add_memory to device_initcall Geoff Levand
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