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| author | Jiang Liu <liuj97@gmail.com> | 2013-07-03 15:03:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-03 16:07:35 -0700 |
| commit | 7ee3d4e8cd560500192d80ca84d7f15d6dee0807 (patch) | |
| tree | 8c58a121edb9c528fb6497e04774dca8d121aa4f /include/linux/mm.h | |
| parent | a214a8c68bcdef2fb0803425f7fe36fe41030d3f (diff) | |
| download | op-kernel-dev-7ee3d4e8cd560500192d80ca84d7f15d6dee0807.zip op-kernel-dev-7ee3d4e8cd560500192d80ca84d7f15d6dee0807.tar.gz | |
mm: introduce helper function mem_init_print_info() to simplify mem_init()
Introduce helper function mem_init_print_info() to simplify mem_init()
across different architectures, which also unifies the format and
information printed.
Function mem_init_print_info() calculates memory statistics information
without walking each page, so it should be a little faster on some
architectures.
Also introduce another helper get_num_physpages() to kill the global
variable num_physpages.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Michel Lespinasse <walken@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 4310f80..09c2353 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1323,6 +1323,7 @@ extern void free_highmem_page(struct page *page); #endif extern void adjust_managed_page_count(struct page *page, long count); +extern void mem_init_print_info(const char *str); /* Free the reserved page into the buddy system, so it gets managed. */ static inline void __free_reserved_page(struct page *page) @@ -1358,6 +1359,17 @@ static inline unsigned long free_initmem_default(int poison) poison, "unused kernel"); } +static inline unsigned long get_num_physpages(void) +{ + int nid; + unsigned long phys_pages = 0; + + for_each_online_node(nid) + phys_pages += node_present_pages(nid); + + return phys_pages; +} + #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP /* * With CONFIG_HAVE_MEMBLOCK_NODE_MAP set, an architecture may initialise its |
