summaryrefslogtreecommitdiff
path: root/mm/sparse.c
diff options
context:
space:
mode:
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-12-21 18:46:08 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-12-21 18:46:08 +0300
commitcd6a22310ec2a70092e136d0cd65bb77c1502521 (patch)
treec01fa788b27b240c7b426d7f329d92bd58c7b8f5 /mm/sparse.c
parent1e12a521d6917004f8b95a3b5864b92edc2694c8 (diff)
parent177c459b08a34dcf004aa9a4c1f1d8be682ff3af (diff)
downloadlinux-cd6a22310ec2a70092e136d0cd65bb77c1502521.tar.xz
Merge USB 4.20-rc8 mergepoint into usb-next
We need the USB changes in here for additional patches to be able to apply cleanly. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/sparse.c')
-rw-r--r--mm/sparse.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/mm/sparse.c b/mm/sparse.c
index 33307fc05c4d..3abc8cc50201 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -240,6 +240,22 @@ void __init memory_present(int nid, unsigned long start, unsigned long end)
}
/*
+ * Mark all memblocks as present using memory_present(). This is a
+ * convienence function that is useful for a number of arches
+ * to mark all of the systems memory as present during initialization.
+ */
+void __init memblocks_present(void)
+{
+ struct memblock_region *reg;
+
+ for_each_memblock(memory, reg) {
+ memory_present(memblock_get_region_node(reg),
+ memblock_region_memory_base_pfn(reg),
+ memblock_region_memory_end_pfn(reg));
+ }
+}
+
+/*
* Subtle, we encode the real pfn into the mem_map such that
* the identity pfn - section_mem_map will return the actual
* physical page frame number.