i am sorry, this patch has many bugs
i resend it in another mail thread
please ignore it
On 2016/8/27 23:35, zijun_hu wrote:
> From: zijun_hu <zijun_hu@xxxxxxx>
>
> in ___alloc_bootmem_node_nopanic(), substitute kzalloc_node()
> for kzalloc() in order to allocate memory within given node
> preferentially when slab is available
>
> free_all_bootmem_core() is optimized to make the first two parameters
> of __free_pages_bootmem() looks consistent with each other apparently
> when freeing bdata->node_bootmem_map
>
> Signed-off-by: zijun_hu <zijun_hu@xxxxxxx>
> ---
> mm/bootmem.c | 21 ++++++---------------
> 1 file changed, 6 insertions(+), 15 deletions(-)
>
> diff --git a/mm/bootmem.c b/mm/bootmem.c
> index 0aa7dda52402..615acca2e0cb 100644
> --- a/mm/bootmem.c
> +++ b/mm/bootmem.c
> @@ -11,15 +11,12 @@
> #include <linux/init.h>
> #include <linux/pfn.h>
> #include <linux/slab.h>
> -#include <linux/bootmem.h>
> #include <linux/export.h>
> #include <linux/kmemleak.h>
> #include <linux/range.h>
> -#include <linux/memblock.h>
> #include <linux/bug.h>
> #include <linux/io.h>
> -
> -#include <asm/processor.h>
> +#include <linux/bootmem.h>
>
> #include "internal.h"
>
> @@ -229,13 +226,14 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
> }
> }
>
> - cur = bdata->node_min_pfn;
> page = virt_to_page(bdata->node_bootmem_map);
> pages = bdata->node_low_pfn - bdata->node_min_pfn;
> pages = bootmem_bootmap_pages(pages);
> count += pages;
> - while (pages--)
> - __free_pages_bootmem(page++, cur++, 0);
> + while (pages--) {
> + __free_pages_bootmem(page, page_to_pfn(page), 0);
> + page++;
> + }
> bdata->node_bootmem_map = NULL;
>
> bdebug("nid=%td released=%lx\n", bdata - bootmem_node_data, count);
> @@ -712,7 +710,7 @@ void * __init ___alloc_bootmem_node_nopanic(pg_data_t *pgdat,
> void *ptr;
>
> if (WARN_ON_ONCE(slab_is_available()))
> - return kzalloc(size, GFP_NOWAIT);
> + return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
> again:
>
> /* do not panic in alloc_bootmem_bdata() */
> @@ -738,9 +736,6 @@ again:
> void * __init __alloc_bootmem_node_nopanic(pg_data_t *pgdat, unsigned long size,
> unsigned long align, unsigned long goal)
> {
> - if (WARN_ON_ONCE(slab_is_available()))
> - return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
> -
> return ___alloc_bootmem_node_nopanic(pgdat, size, align, goal, 0);
> }
>
> @@ -812,10 +807,6 @@ void * __init __alloc_bootmem_node_high(pg_data_t *pgdat, unsigned long size,
>
> }
>
> -#ifndef ARCH_LOW_ADDRESS_LIMIT
> -#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
> -#endif
> -
> /**
> * __alloc_bootmem_low - allocate low boot memory
> * @size: size of the request in bytes
>
--
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