summaryrefslogtreecommitdiffstats
path: root/mm
diff options
context:
space:
mode:
authorMike Rapoport <rppt@linux.ibm.com>2020-08-06 23:24:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-07 11:33:27 -0700
commitc89ab04febf97d2db8ca4ef8e2866fadc474351b (patch)
tree99a12f54aa9cabcdd0b1c0a91098cbbc29b04a3b /mm
parent6cda72047ea46272ecb9cc71acf1231cea07167a (diff)
downloadlinux-c89ab04febf97d2db8ca4ef8e2866fadc474351b.tar.bz2
mm/sparse: cleanup the code surrounding memory_present()
After removal of CONFIG_HAVE_MEMBLOCK_NODE_MAP we have two equivalent functions that call memory_present() for each region in memblock.memory: sparse_memory_present_with_active_regions() and membocks_present(). Moreover, all architectures have a call to either of these functions preceding the call to sparse_init() and in the most cases they are called one after the other. Mark the regions from memblock.memory as present during sparce_init() by making sparse_init() call memblocks_present(), make memblocks_present() and memory_present() functions static and remove redundant sparse_memory_present_with_active_regions() function. Also remove no longer required HAVE_MEMORY_PRESENT configuration option. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200712083130.22919-1-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/Kconfig6
-rw-r--r--mm/page_alloc.c16
-rw-r--r--mm/sparse.c20
3 files changed, 13 insertions, 29 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index d41f3fa7e923..6c974888f86f 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -88,13 +88,9 @@ config NEED_MULTIPLE_NODES
def_bool y
depends on DISCONTIGMEM || NUMA
-config HAVE_MEMORY_PRESENT
- def_bool y
- depends on ARCH_HAVE_MEMORY_PRESENT || SPARSEMEM
-
#
# SPARSEMEM_EXTREME (which is the default) does some bootmem
-# allocations when memory_present() is called. If this cannot
+# allocations when sparse_init() is called. If this cannot
# be done on your architecture, select this option. However,
# statically allocating the mem_section[] array can potentially
# consume vast quantities of .bss, so be careful.
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8d5d8526c2f3..f49de9e97bf2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6325,22 +6325,6 @@ void __meminit init_currently_empty_zone(struct zone *zone,
}
/**
- * sparse_memory_present_with_active_regions - Call memory_present for each active range
- * @nid: The node to call memory_present for. If MAX_NUMNODES, all nodes will be used.
- *
- * If an architecture guarantees that all ranges registered contain no holes and may
- * be freed, this function may be used instead of calling memory_present() manually.
- */
-void __init sparse_memory_present_with_active_regions(int nid)
-{
- unsigned long start_pfn, end_pfn;
- int i, this_nid;
-
- for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, &this_nid)
- memory_present(this_nid, start_pfn, end_pfn);
-}
-
-/**
* get_pfn_range_for_nid - Return the start and end page frames for a node
* @nid: The nid to return the range for. If MAX_NUMNODES, the min and max PFN are returned.
* @start_pfn: Passed by reference. On return, it will have the node start_pfn.
diff --git a/mm/sparse.c b/mm/sparse.c
index 1b5e0385f419..fcc3d176f1ea 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -249,7 +249,7 @@ void __init subsection_map_init(unsigned long pfn, unsigned long nr_pages)
#endif
/* Record a memory area against a node. */
-void __init memory_present(int nid, unsigned long start, unsigned long end)
+static void __init memory_present(int nid, unsigned long start, unsigned long end)
{
unsigned long pfn;
@@ -285,11 +285,11 @@ void __init memory_present(int nid, unsigned long start, unsigned long end)
}
/*
- * Mark all memblocks as present using memory_present(). This is a
- * convenience function that is useful for a number of arches
- * to mark all of the systems memory as present during initialization.
+ * Mark all memblocks as present using memory_present().
+ * This is a convenience function that is useful to mark all of the systems
+ * memory as present during initialization.
*/
-void __init memblocks_present(void)
+static void __init memblocks_present(void)
{
struct memblock_region *reg;
@@ -574,9 +574,13 @@ failed:
*/
void __init sparse_init(void)
{
- unsigned long pnum_begin = first_present_section_nr();
- int nid_begin = sparse_early_nid(__nr_to_section(pnum_begin));
- unsigned long pnum_end, map_count = 1;
+ unsigned long pnum_end, pnum_begin, map_count = 1;
+ int nid_begin;
+
+ memblocks_present();
+
+ pnum_begin = first_present_section_nr();
+ nid_begin = sparse_early_nid(__nr_to_section(pnum_begin));
/* Setup pageblock_order for HUGETLB_PAGE_SIZE_VARIABLE */
set_pageblock_order();