Hi Andrew,
Here are the updates for hotplug memory remove code currently in -mm.
1) Please don't push this patch to mainline (for the merge window).
memory-hotplug-add-removable-to-sysfs-to-show-memblock-removability.patch
I didn't find this consistently useful - even though memory is marked
removable, I found cases where I can't move it. When we get it right,
we can push it at that time. Please leave this in -mm.
2) Can you replace the following patch with this ?
add-remove_memory-for-ppc64-2.patch
I found that, I do need arch-specific hooks to get the memory remove
working on ppc64 LPAR. Earlier, I tried to make remove_memory() arch
neutral, but we do need arch specific hooks.
Thanks,
Badari
Supply ppc64 remove_memory() function. Arch specific is still
being reviewed by Paul Mackerras.
From: Badari Pulavarty <[EMAIL PROTECTED]>
---
arch/powerpc/mm/mem.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
Index: linux-2.6.24-rc8/arch/powerpc/mm/mem.c
===================================================================
--- linux-2.6.24-rc8.orig/arch/powerpc/mm/mem.c 2008-01-25 08:04:32.000000000
-0800
+++ linux-2.6.24-rc8/arch/powerpc/mm/mem.c 2008-01-25 08:16:37.000000000
-0800
@@ -145,6 +145,22 @@ walk_memory_resource(unsigned long start
return (*func)(start_pfn, nr_pages, arg);
}
+#ifdef CONFIG_MEMORY_HOTREMOVE
+int remove_memory(u64 start, u64 size)
+{
+ unsigned long start_pfn, end_pfn;
+ int ret;
+
+ start_pfn = start >> PAGE_SHIFT;
+ end_pfn = start_pfn + (size >> PAGE_SHIFT);
+ ret = offline_pages(start_pfn, end_pfn, 120 * HZ);
+ if (ret)
+ goto out;
+ /* Arch-specific calls go here - next patch */
+out:
+ return ret;
+}
+#endif /* CONFIG_MEMORY_HOTREMOVE */
#endif /* CONFIG_MEMORY_HOTPLUG */
void show_mem(void)
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