On Thu, Apr 23, 2020 at 09:13:12AM +0800, Baoquan He wrote:
> On 04/12/20 at 10:48pm, Mike Rapoport wrote:
> > From: Mike Rapoport <rppt@xxxxxxxxxxxxx>
> >
> > The commit f47ac088c406 ("mm: memmap_init: iterate over memblock regions
>
> This commit id should be a temporary one, will be changed when merged
> into maintainer's tree and linus's tree. Only saying last patch plus the
> patch subject is OK?
Right, the commit id here is not stable. I'll update the changelog.
> > rather that check each PFN") made early_pfn_in_nid() obsolete and since
> > CONFIG_NODES_SPAN_OTHER_NODES is only used to pick a stub or a real
> > implementation of early_pfn_in_nid() it is also not needed anymore.
> >
> > Remove both early_pfn_in_nid() and the CONFIG_NODES_SPAN_OTHER_NODES.
> >
> > Co-developed-by: Hoan Tran <Hoan@xxxxxxxxxxxxxxxxxxxxxx>
> > Signed-off-by: Hoan Tran <Hoan@xxxxxxxxxxxxxxxxxxxxxx>
> > Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
> > ---
> > arch/powerpc/Kconfig | 9 ---------
> > arch/sparc/Kconfig | 9 ---------
> > arch/x86/Kconfig | 9 ---------
> > mm/page_alloc.c | 20 --------------------
> > 4 files changed, 47 deletions(-)
> >
> > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> > index 5f86b22b7d2c..74f316deeae1 100644
> > --- a/arch/powerpc/Kconfig
> > +++ b/arch/powerpc/Kconfig
> > @@ -685,15 +685,6 @@ config ARCH_MEMORY_PROBE
> > def_bool y
> > depends on MEMORY_HOTPLUG
> >
> > -# Some NUMA nodes have memory ranges that span
> > -# other nodes. Even though a pfn is valid and
> > -# between a node's start and end pfns, it may not
> > -# reside on that node. See memmap_init_zone()
> > -# for details.
> > -config NODES_SPAN_OTHER_NODES
> > - def_bool y
> > - depends on NEED_MULTIPLE_NODES
> > -
> > config STDBINUTILS
> > bool "Using standard binutils settings"
> > depends on 44x
> > diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
> > index 795206b7b552..0e4f3891b904 100644
> > --- a/arch/sparc/Kconfig
> > +++ b/arch/sparc/Kconfig
> > @@ -286,15 +286,6 @@ config NODES_SHIFT
> > Specify the maximum number of NUMA Nodes available on the target
> > system. Increases memory reserved to accommodate various tables.
> >
> > -# Some NUMA nodes have memory ranges that span
> > -# other nodes. Even though a pfn is valid and
> > -# between a node's start and end pfns, it may not
> > -# reside on that node. See memmap_init_zone()
> > -# for details.
> > -config NODES_SPAN_OTHER_NODES
> > - def_bool y
> > - depends on NEED_MULTIPLE_NODES
> > -
> > config ARCH_SPARSEMEM_ENABLE
> > def_bool y if SPARC64
> > select SPARSEMEM_VMEMMAP_ENABLE
> > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> > index 9d3e95b4fb85..37dac095659e 100644
> > --- a/arch/x86/Kconfig
> > +++ b/arch/x86/Kconfig
> > @@ -1581,15 +1581,6 @@ config X86_64_ACPI_NUMA
> > ---help---
> > Enable ACPI SRAT based node topology detection.
> >
> > -# Some NUMA nodes have memory ranges that span
> > -# other nodes. Even though a pfn is valid and
> > -# between a node's start and end pfns, it may not
> > -# reside on that node. See memmap_init_zone()
> > -# for details.
> > -config NODES_SPAN_OTHER_NODES
> > - def_bool y
> > - depends on X86_64_ACPI_NUMA
> > -
> > config NUMA_EMU
> > bool "NUMA emulation"
> > depends on NUMA
> > diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> > index c43ce8709457..343d87b8697d 100644
> > --- a/mm/page_alloc.c
> > +++ b/mm/page_alloc.c
> > @@ -1541,26 +1541,6 @@ int __meminit early_pfn_to_nid(unsigned long pfn)
> > }
> > #endif /* CONFIG_NEED_MULTIPLE_NODES */
> >
> > -#ifdef CONFIG_NODES_SPAN_OTHER_NODES
> > -/* Only safe to use early in boot when initialisation is single-threaded */
> > -static inline bool __meminit early_pfn_in_nid(unsigned long pfn, int node)
> > -{
> > - int nid;
> > -
> > - nid = __early_pfn_to_nid(pfn, &early_pfnnid_cache);
> > - if (nid >= 0 && nid != node)
> > - return false;
> > - return true;
> > -}
> > -
> > -#else
> > -static inline bool __meminit early_pfn_in_nid(unsigned long pfn, int node)
> > -{
> > - return true;
> > -}
> > -#endif
>
> And macro early_pfn_valid() is not needed either, we may need remove it
> too.
Ok.
> Otherwise, removing NODES_SPAN_OTHER_NODES in this patch looks good.
>
> Reviewed-by: Baoquan He <bhe@xxxxxxxxxx>
>
> > -
> > -
> > void __init memblock_free_pages(struct page *page, unsigned long pfn,
> > unsigned int order)
> > {
> > --
> > 2.25.1
> >
>
--
Sincerely yours,
Mike.
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