| Message ID | 500904D6.3030109@cn.fujitsu.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
2012/07/20 16:12, Wen Congyang wrote: > We don't call __add_pages() directly in the function add_memory() > because some other architecture related thins needs to be done > before or after calling __add_pages(). So we should not call > __remove_pages() directly in the function remove_memory. > Introduce new function arch_remove_memory() to revert the things done > in arch_add_memory(). > > Note: the function for x86_64 will be implemented later. And I don't > know how to implement it for s390. I think you need cc to other arch ML for reviewing the patch. > CC: David Rientjes <rientjes@google.com> > CC: Jiang Liu <liuj97@gmail.com> > CC: Len Brown <len.brown@intel.com> > CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> > CC: Paul Mackerras <paulus@samba.org> > CC: Christoph Lameter <cl@linux.com> > Cc: Minchan Kim <minchan.kim@gmail.com> > CC: Andrew Morton <akpm@linux-foundation.org> > CC: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> > CC: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> > Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> > --- > arch/ia64/mm/init.c | 16 ++++++++++++++++ > arch/powerpc/mm/mem.c | 14 ++++++++++++++ > arch/s390/mm/init.c | 8 ++++++++ > arch/sh/mm/init.c | 15 +++++++++++++++ > arch/tile/mm/init.c | 8 ++++++++ > arch/x86/mm/init_32.c | 10 ++++++++++ > arch/x86/mm/init_64.c | 7 +++++++ > include/linux/memory_hotplug.h | 1 + > mm/memory_hotplug.c | 2 +- > 9 files changed, 80 insertions(+), 1 deletions(-) > > diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c > index 0eab454..1e345ed 100644 > --- a/arch/ia64/mm/init.c > +++ b/arch/ia64/mm/init.c > @@ -688,6 +688,22 @@ int arch_add_memory(int nid, u64 start, u64 size) > > return ret; > } > + > +#ifdef CONFIG_MEMORY_HOTREMOVE > +int arch_remove_memory(u64 start, u64 size) > +{ > + unsigned long start_pfn = start >> PAGE_SHIFT; > + unsigned long nr_pages = size >> PAGE_SHIFT; > + int ret; > + > + ret = __remove_pages(start_pfn, nr_pages); > + if (ret) > + pr_warn("%s: Problem encountered in __remove_pages() as" > + " ret=%d\n", __func__, ret); > + > + return ret; > +} > +#endif > #endif > > /* > diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c > index baaafde..249cef4 100644 > --- a/arch/powerpc/mm/mem.c > +++ b/arch/powerpc/mm/mem.c > @@ -133,6 +133,20 @@ int arch_add_memory(int nid, u64 start, u64 size) > > return __add_pages(nid, zone, start_pfn, nr_pages); > } > + > +#ifdef CONFIG_MEMORY_HOTREMOVE > +int arch_remove_memory(u64 start, u64 size) > +{ > + unsigned long start_pfn = start >> PAGE_SHIFT; > + unsigned long nr_pages = size >> PAGE_SHIFT; > + > + start = (unsigned long)__va(start); > + if (remove_section_mapping(start, start + size)) > + return -EINVAL; > + > + return __remove_pages(start_pfn, nr_pages); > +} > +#endif > #endif /* CONFIG_MEMORY_HOTPLUG */ > > /* > diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c > index 2bea060..3de0d5b 100644 > --- a/arch/s390/mm/init.c > +++ b/arch/s390/mm/init.c > @@ -259,4 +259,12 @@ int arch_add_memory(int nid, u64 start, u64 size) > vmem_remove_mapping(start, size); > return rc; > } > + > +#ifdef CONFIG_MEMORY_HOTREMOVE > +int arch_remove_memory(u64 start, u64 size) > +{ > + /* TODO */ > + return -EBUSY; > +} > +#endif > #endif /* CONFIG_MEMORY_HOTPLUG */ > diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c > index 82cc576..fc84491 100644 > --- a/arch/sh/mm/init.c > +++ b/arch/sh/mm/init.c > @@ -558,4 +558,19 @@ int memory_add_physaddr_to_nid(u64 addr) > EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid); > #endif > > +#ifdef CONFIG_MEMORY_HOTREMOVE > +int arch_remove_memory(u64 start, u64 size) > +{ > + unsigned long start_pfn = start >> PAGE_SHIFT; > + unsigned long nr_pages = size >> PAGE_SHIFT; > + int ret; > + > + ret = __remove_pages(start_pfn, nr_pages); > + if (unlikely(ret)) > + pr_warn("%s: Failed, __remove_pages() == %d\n", __func__, > + ret); > + > + return ret; > +} > +#endif > #endif /* CONFIG_MEMORY_HOTPLUG */ > diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c > index 630dd2c..bdd8a99 100644 > --- a/arch/tile/mm/init.c > +++ b/arch/tile/mm/init.c > @@ -947,6 +947,14 @@ int remove_memory(u64 start, u64 size) > { > return -EINVAL; > } > + > +#ifdef CONFIG_MEMORY_HOTREMOVE > +int arch_remove_memory(u64 start, u64 size) > +{ > + /* TODO */ > + return -EBUSY; > +} > +#endif > #endif > > struct kmem_cache *pgd_cache; > diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c > index 575d86f..a690153 100644 > --- a/arch/x86/mm/init_32.c > +++ b/arch/x86/mm/init_32.c > @@ -842,6 +842,16 @@ int arch_add_memory(int nid, u64 start, u64 size) > > return __add_pages(nid, zone, start_pfn, nr_pages); > } > + > +#ifdef CONFIG_MEMORY_HOTREMOVE > +int arch_remove_memory(unsigned long start, unsigned long size) > +{ > + unsigned long start_pfn = start >> PAGE_SHIFT; > + unsigned long nr_pages = size >> PAGE_SHIFT; > + > + return __remove_pages(start_pfn, nr_pages); > +} > +#endif > #endif > > /* > diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c > index 9e635b3..78b94bc 100644 > --- a/arch/x86/mm/init_64.c > +++ b/arch/x86/mm/init_64.c > @@ -675,6 +675,13 @@ int arch_add_memory(int nid, u64 start, u64 size) > } > EXPORT_SYMBOL_GPL(arch_add_memory); > > +#ifdef CONFIG_MEMORY_HOTREMOVE > +int arch_remove_memory(unsigned long start, unsigned long size) > +{ > + /* TODO */ > + return -EBUSY; > +} > +#endif Why does not the function call __remove_pages()? Thanks, Yasuaki ishimatsu > #endif /* CONFIG_MEMORY_HOTPLUG */ > > static struct kcore_list kcore_vsyscall; > diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h > index 2ba0a1a..8639799 100644 > --- a/include/linux/memory_hotplug.h > +++ b/include/linux/memory_hotplug.h > @@ -84,6 +84,7 @@ extern void __online_page_free(struct page *page); > > #ifdef CONFIG_MEMORY_HOTREMOVE > extern bool is_pageblock_removable_nolock(struct page *page); > +extern int arch_remove_memory(unsigned long start, unsigned long size); > #endif /* CONFIG_MEMORY_HOTREMOVE */ > > /* reasonably generic interface to expand the physical pages in a zone */ > diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c > index dccdf71..cc2c8b9 100644 > --- a/mm/memory_hotplug.c > +++ b/mm/memory_hotplug.c > @@ -1055,7 +1055,7 @@ int __ref remove_memory(int nid, u64 start, u64 size) > unregister_one_node(nid); > } > > - __remove_pages(start >> PAGE_SHIFT, size >> PAGE_SHIFT); > + arch_remove_memory(start, size); > out: > unlock_memory_hotplug(); > return ret; > -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
At 07/20/2012 04:21 PM, Yasuaki Ishimatsu Wrote: > 2012/07/20 16:12, Wen Congyang wrote: >> We don't call __add_pages() directly in the function add_memory() >> because some other architecture related thins needs to be done >> before or after calling __add_pages(). So we should not call >> __remove_pages() directly in the function remove_memory. >> Introduce new function arch_remove_memory() to revert the things done >> in arch_add_memory(). >> >> Note: the function for x86_64 will be implemented later. And I don't >> know how to implement it for s390. > > I think you need cc to other arch ML for reviewing the patch. I forgot to do it. > > >> CC: David Rientjes <rientjes@google.com> >> CC: Jiang Liu <liuj97@gmail.com> >> CC: Len Brown <len.brown@intel.com> >> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> >> CC: Paul Mackerras <paulus@samba.org> >> CC: Christoph Lameter <cl@linux.com> >> Cc: Minchan Kim <minchan.kim@gmail.com> >> CC: Andrew Morton <akpm@linux-foundation.org> >> CC: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> >> CC: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> >> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> >> --- >> arch/ia64/mm/init.c | 16 ++++++++++++++++ >> arch/powerpc/mm/mem.c | 14 ++++++++++++++ >> arch/s390/mm/init.c | 8 ++++++++ >> arch/sh/mm/init.c | 15 +++++++++++++++ >> arch/tile/mm/init.c | 8 ++++++++ >> arch/x86/mm/init_32.c | 10 ++++++++++ >> arch/x86/mm/init_64.c | 7 +++++++ >> include/linux/memory_hotplug.h | 1 + >> mm/memory_hotplug.c | 2 +- >> 9 files changed, 80 insertions(+), 1 deletions(-) >> >> diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c >> index 0eab454..1e345ed 100644 >> --- a/arch/ia64/mm/init.c >> +++ b/arch/ia64/mm/init.c >> @@ -688,6 +688,22 @@ int arch_add_memory(int nid, u64 start, u64 size) >> >> return ret; >> } >> + >> +#ifdef CONFIG_MEMORY_HOTREMOVE >> +int arch_remove_memory(u64 start, u64 size) >> +{ >> + unsigned long start_pfn = start >> PAGE_SHIFT; >> + unsigned long nr_pages = size >> PAGE_SHIFT; >> + int ret; >> + >> + ret = __remove_pages(start_pfn, nr_pages); >> + if (ret) >> + pr_warn("%s: Problem encountered in __remove_pages() as" >> + " ret=%d\n", __func__, ret); >> + >> + return ret; >> +} >> +#endif >> #endif >> >> /* >> diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c >> index baaafde..249cef4 100644 >> --- a/arch/powerpc/mm/mem.c >> +++ b/arch/powerpc/mm/mem.c >> @@ -133,6 +133,20 @@ int arch_add_memory(int nid, u64 start, u64 size) >> >> return __add_pages(nid, zone, start_pfn, nr_pages); >> } >> + >> +#ifdef CONFIG_MEMORY_HOTREMOVE >> +int arch_remove_memory(u64 start, u64 size) >> +{ >> + unsigned long start_pfn = start >> PAGE_SHIFT; >> + unsigned long nr_pages = size >> PAGE_SHIFT; >> + >> + start = (unsigned long)__va(start); >> + if (remove_section_mapping(start, start + size)) >> + return -EINVAL; >> + >> + return __remove_pages(start_pfn, nr_pages); >> +} >> +#endif >> #endif /* CONFIG_MEMORY_HOTPLUG */ >> >> /* >> diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c >> index 2bea060..3de0d5b 100644 >> --- a/arch/s390/mm/init.c >> +++ b/arch/s390/mm/init.c >> @@ -259,4 +259,12 @@ int arch_add_memory(int nid, u64 start, u64 size) >> vmem_remove_mapping(start, size); >> return rc; >> } >> + >> +#ifdef CONFIG_MEMORY_HOTREMOVE >> +int arch_remove_memory(u64 start, u64 size) >> +{ >> + /* TODO */ >> + return -EBUSY; >> +} >> +#endif >> #endif /* CONFIG_MEMORY_HOTPLUG */ >> diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c >> index 82cc576..fc84491 100644 >> --- a/arch/sh/mm/init.c >> +++ b/arch/sh/mm/init.c >> @@ -558,4 +558,19 @@ int memory_add_physaddr_to_nid(u64 addr) >> EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid); >> #endif >> >> +#ifdef CONFIG_MEMORY_HOTREMOVE >> +int arch_remove_memory(u64 start, u64 size) >> +{ >> + unsigned long start_pfn = start >> PAGE_SHIFT; >> + unsigned long nr_pages = size >> PAGE_SHIFT; >> + int ret; >> + >> + ret = __remove_pages(start_pfn, nr_pages); >> + if (unlikely(ret)) >> + pr_warn("%s: Failed, __remove_pages() == %d\n", __func__, >> + ret); >> + >> + return ret; >> +} >> +#endif >> #endif /* CONFIG_MEMORY_HOTPLUG */ >> diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c >> index 630dd2c..bdd8a99 100644 >> --- a/arch/tile/mm/init.c >> +++ b/arch/tile/mm/init.c >> @@ -947,6 +947,14 @@ int remove_memory(u64 start, u64 size) >> { >> return -EINVAL; >> } >> + >> +#ifdef CONFIG_MEMORY_HOTREMOVE >> +int arch_remove_memory(u64 start, u64 size) >> +{ >> + /* TODO */ >> + return -EBUSY; >> +} >> +#endif >> #endif >> >> struct kmem_cache *pgd_cache; >> diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c >> index 575d86f..a690153 100644 >> --- a/arch/x86/mm/init_32.c >> +++ b/arch/x86/mm/init_32.c >> @@ -842,6 +842,16 @@ int arch_add_memory(int nid, u64 start, u64 size) >> >> return __add_pages(nid, zone, start_pfn, nr_pages); >> } >> + >> +#ifdef CONFIG_MEMORY_HOTREMOVE >> +int arch_remove_memory(unsigned long start, unsigned long size) >> +{ >> + unsigned long start_pfn = start >> PAGE_SHIFT; >> + unsigned long nr_pages = size >> PAGE_SHIFT; >> + >> + return __remove_pages(start_pfn, nr_pages); >> +} >> +#endif >> #endif >> >> /* >> diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c >> index 9e635b3..78b94bc 100644 >> --- a/arch/x86/mm/init_64.c >> +++ b/arch/x86/mm/init_64.c >> @@ -675,6 +675,13 @@ int arch_add_memory(int nid, u64 start, u64 size) >> } >> EXPORT_SYMBOL_GPL(arch_add_memory); >> >> +#ifdef CONFIG_MEMORY_HOTREMOVE >> +int arch_remove_memory(unsigned long start, unsigned long size) >> +{ >> + /* TODO */ >> + return -EBUSY; >> +} >> +#endif > > Why does not the function call __remove_pages()? arch_remove_memory() should clear the page table after remove pages here. I implement this function in patch 8. Thanks Wen Congyang > > Thanks, > Yasuaki ishimatsu > >> #endif /* CONFIG_MEMORY_HOTPLUG */ >> >> static struct kcore_list kcore_vsyscall; >> diff --git a/include/linux/memory_hotplug.h >> b/include/linux/memory_hotplug.h >> index 2ba0a1a..8639799 100644 >> --- a/include/linux/memory_hotplug.h >> +++ b/include/linux/memory_hotplug.h >> @@ -84,6 +84,7 @@ extern void __online_page_free(struct page *page); >> >> #ifdef CONFIG_MEMORY_HOTREMOVE >> extern bool is_pageblock_removable_nolock(struct page *page); >> +extern int arch_remove_memory(unsigned long start, unsigned long size); >> #endif /* CONFIG_MEMORY_HOTREMOVE */ >> >> /* reasonably generic interface to expand the physical pages in a >> zone */ >> diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c >> index dccdf71..cc2c8b9 100644 >> --- a/mm/memory_hotplug.c >> +++ b/mm/memory_hotplug.c >> @@ -1055,7 +1055,7 @@ int __ref remove_memory(int nid, u64 start, u64 >> size) >> unregister_one_node(nid); >> } >> >> - __remove_pages(start >> PAGE_SHIFT, size >> PAGE_SHIFT); >> + arch_remove_memory(start, size); >> out: >> unlock_memory_hotplug(); >> return ret; >> > > > -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index 0eab454..1e345ed 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -688,6 +688,22 @@ int arch_add_memory(int nid, u64 start, u64 size) return ret; } + +#ifdef CONFIG_MEMORY_HOTREMOVE +int arch_remove_memory(u64 start, u64 size) +{ + unsigned long start_pfn = start >> PAGE_SHIFT; + unsigned long nr_pages = size >> PAGE_SHIFT; + int ret; + + ret = __remove_pages(start_pfn, nr_pages); + if (ret) + pr_warn("%s: Problem encountered in __remove_pages() as" + " ret=%d\n", __func__, ret); + + return ret; +} +#endif #endif /* diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index baaafde..249cef4 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -133,6 +133,20 @@ int arch_add_memory(int nid, u64 start, u64 size) return __add_pages(nid, zone, start_pfn, nr_pages); } + +#ifdef CONFIG_MEMORY_HOTREMOVE +int arch_remove_memory(u64 start, u64 size) +{ + unsigned long start_pfn = start >> PAGE_SHIFT; + unsigned long nr_pages = size >> PAGE_SHIFT; + + start = (unsigned long)__va(start); + if (remove_section_mapping(start, start + size)) + return -EINVAL; + + return __remove_pages(start_pfn, nr_pages); +} +#endif #endif /* CONFIG_MEMORY_HOTPLUG */ /* diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index 2bea060..3de0d5b 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -259,4 +259,12 @@ int arch_add_memory(int nid, u64 start, u64 size) vmem_remove_mapping(start, size); return rc; } + +#ifdef CONFIG_MEMORY_HOTREMOVE +int arch_remove_memory(u64 start, u64 size) +{ + /* TODO */ + return -EBUSY; +} +#endif #endif /* CONFIG_MEMORY_HOTPLUG */ diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c index 82cc576..fc84491 100644 --- a/arch/sh/mm/init.c +++ b/arch/sh/mm/init.c @@ -558,4 +558,19 @@ int memory_add_physaddr_to_nid(u64 addr) EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid); #endif +#ifdef CONFIG_MEMORY_HOTREMOVE +int arch_remove_memory(u64 start, u64 size) +{ + unsigned long start_pfn = start >> PAGE_SHIFT; + unsigned long nr_pages = size >> PAGE_SHIFT; + int ret; + + ret = __remove_pages(start_pfn, nr_pages); + if (unlikely(ret)) + pr_warn("%s: Failed, __remove_pages() == %d\n", __func__, + ret); + + return ret; +} +#endif #endif /* CONFIG_MEMORY_HOTPLUG */ diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c index 630dd2c..bdd8a99 100644 --- a/arch/tile/mm/init.c +++ b/arch/tile/mm/init.c @@ -947,6 +947,14 @@ int remove_memory(u64 start, u64 size) { return -EINVAL; } + +#ifdef CONFIG_MEMORY_HOTREMOVE +int arch_remove_memory(u64 start, u64 size) +{ + /* TODO */ + return -EBUSY; +} +#endif #endif struct kmem_cache *pgd_cache; diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 575d86f..a690153 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -842,6 +842,16 @@ int arch_add_memory(int nid, u64 start, u64 size) return __add_pages(nid, zone, start_pfn, nr_pages); } + +#ifdef CONFIG_MEMORY_HOTREMOVE +int arch_remove_memory(unsigned long start, unsigned long size) +{ + unsigned long start_pfn = start >> PAGE_SHIFT; + unsigned long nr_pages = size >> PAGE_SHIFT; + + return __remove_pages(start_pfn, nr_pages); +} +#endif #endif /* diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 9e635b3..78b94bc 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -675,6 +675,13 @@ int arch_add_memory(int nid, u64 start, u64 size) } EXPORT_SYMBOL_GPL(arch_add_memory); +#ifdef CONFIG_MEMORY_HOTREMOVE +int arch_remove_memory(unsigned long start, unsigned long size) +{ + /* TODO */ + return -EBUSY; +} +#endif #endif /* CONFIG_MEMORY_HOTPLUG */ static struct kcore_list kcore_vsyscall; diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 2ba0a1a..8639799 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -84,6 +84,7 @@ extern void __online_page_free(struct page *page); #ifdef CONFIG_MEMORY_HOTREMOVE extern bool is_pageblock_removable_nolock(struct page *page); +extern int arch_remove_memory(unsigned long start, unsigned long size); #endif /* CONFIG_MEMORY_HOTREMOVE */ /* reasonably generic interface to expand the physical pages in a zone */ diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index dccdf71..cc2c8b9 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1055,7 +1055,7 @@ int __ref remove_memory(int nid, u64 start, u64 size) unregister_one_node(nid); } - __remove_pages(start >> PAGE_SHIFT, size >> PAGE_SHIFT); + arch_remove_memory(start, size); out: unlock_memory_hotplug(); return ret;
We don't call __add_pages() directly in the function add_memory() because some other architecture related thins needs to be done before or after calling __add_pages(). So we should not call __remove_pages() directly in the function remove_memory. Introduce new function arch_remove_memory() to revert the things done in arch_add_memory(). Note: the function for x86_64 will be implemented later. And I don't know how to implement it for s390. CC: David Rientjes <rientjes@google.com> CC: Jiang Liu <liuj97@gmail.com> CC: Len Brown <len.brown@intel.com> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Paul Mackerras <paulus@samba.org> CC: Christoph Lameter <cl@linux.com> Cc: Minchan Kim <minchan.kim@gmail.com> CC: Andrew Morton <akpm@linux-foundation.org> CC: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> CC: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> --- arch/ia64/mm/init.c | 16 ++++++++++++++++ arch/powerpc/mm/mem.c | 14 ++++++++++++++ arch/s390/mm/init.c | 8 ++++++++ arch/sh/mm/init.c | 15 +++++++++++++++ arch/tile/mm/init.c | 8 ++++++++ arch/x86/mm/init_32.c | 10 ++++++++++ arch/x86/mm/init_64.c | 7 +++++++ include/linux/memory_hotplug.h | 1 + mm/memory_hotplug.c | 2 +- 9 files changed, 80 insertions(+), 1 deletions(-)