On Thu, Apr 23, 2020 at 11:14:54AM +0800, Baoquan He wrote:
> On 04/12/20 at 10:48pm, Mike Rapoport wrote:
> > From: Mike Rapoport <rppt@xxxxxxxxxxxxx>
> >
> > The free_area_init_node() is only used by x86 to initialize a memory-less
> > nodes.
> > Make its name reflect this and drop all the function parameters except node
> > ID as they are anyway zero.
> >
> > Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
> > ---
> > arch/x86/mm/numa.c | 5 +----
> > include/linux/mm.h | 9 +++------
> > mm/page_alloc.c | 7 ++-----
> > 3 files changed, 6 insertions(+), 15 deletions(-)
> >
> > diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
> > index fe024b2ac796..8ee952038c80 100644
> > --- a/arch/x86/mm/numa.c
> > +++ b/arch/x86/mm/numa.c
> > @@ -737,12 +737,9 @@ void __init x86_numa_init(void)
> >
> > static void __init init_memory_less_node(int nid)
> > {
> > - unsigned long zones_size[MAX_NR_ZONES] = {0};
> > - unsigned long zholes_size[MAX_NR_ZONES] = {0};
> > -
> > /* Allocate and initialize node data. Memory-less node is now online.*/
> > alloc_node_data(nid);
> > - free_area_init_node(nid, zones_size, 0, zholes_size);
> > + free_area_init_memoryless_node(nid);
> >
> > /*
> > * All zonelists will be built later in start_kernel() after per cpu
> > diff --git a/include/linux/mm.h b/include/linux/mm.h
> > index 1c2ecb42e043..27660f6cf26e 100644
> > --- a/include/linux/mm.h
> > +++ b/include/linux/mm.h
> > @@ -2272,8 +2272,7 @@ static inline spinlock_t *pud_lock(struct mm_struct *mm, pud_t *pud)
> > }
> >
> > extern void __init pagecache_init(void);
> > -extern void __init free_area_init_node(int nid, unsigned long * zones_size,
> > - unsigned long zone_start_pfn, unsigned long *zholes_size);
> > +extern void __init free_area_init_memoryless_node(int nid);
> > extern void free_initmem(void);
> >
> > /*
> > @@ -2345,10 +2344,8 @@ static inline unsigned long get_num_physpages(void)
> >
> > /*
> > * Using memblock node mappings, an architecture may initialise its
> > - * zones, allocate the backing mem_map and account for memory holes in a more
> > - * architecture independent manner. This is a substitute for creating the
> > - * zone_sizes[] and zholes_size[] arrays and passing them to
> > - * free_area_init_node()
> > + * zones, allocate the backing mem_map and account for memory holes in an
> > + * architecture independent manner.
> > *
> > * An architecture is expected to register range of page frames backed by
> > * physical memory with memblock_add[_node]() before calling
> > diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> > index 376434c7a78b..e46232ec4849 100644
> > --- a/mm/page_alloc.c
> > +++ b/mm/page_alloc.c
> > @@ -6979,12 +6979,9 @@ static void __init __free_area_init_node(int nid, unsigned long *zones_size,
> > free_area_init_core(pgdat);
> > }
> >
> > -void __init free_area_init_node(int nid, unsigned long *zones_size,
> > - unsigned long node_start_pfn,
> > - unsigned long *zholes_size)
> > +void __init free_area_init_memoryless_node(int nid)
> > {
> > - __free_area_init_node(nid, zones_size, node_start_pfn, zholes_size,
> > - true);
> > + __free_area_init_node(nid, NULL, 0, NULL, false);
>
> Can we move free_area_init_memoryless_node() definition into
> arch/x86/mm/numa.c since there's only one caller there?
>
> And I am also wondering if adding a wrapper
> free_area_init_memoryless_node() is necessary if it's only called the
> function free_area_init_node().
Yeah, I think this patch can be entirely dropped and the next one could
be slightly updated :)
Thanks!
> > }
> >
> > #if !defined(CONFIG_FLAT_NODE_MEM_MAP) --
> > 2.25.1
> >
>
--
Sincerely yours,
Mike.
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