| Message ID | 20180628062857.29658-2-bhe@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Jun 28, 2018 at 02:28:53PM +0800, Baoquan He wrote: > It's used to record how many memory sections are marked as present > during system boot up, and will be used in the later patch. > > Signed-off-by: Baoquan He <bhe@redhat.com> > Reviewed-by: Pavel Tatashin <pasha.tatashin@oracle.com> Reviewed-by: Oscar Salvador <osalvador@suse.de> > --- > mm/sparse.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/mm/sparse.c b/mm/sparse.c > index f13f2723950a..6314303130b0 100644 > --- a/mm/sparse.c > +++ b/mm/sparse.c > @@ -200,6 +200,12 @@ static inline int next_present_section_nr(int section_nr) > (section_nr <= __highest_present_section_nr)); \ > section_nr = next_present_section_nr(section_nr)) > > +/* > + * Record how many memory sections are marked as present > + * during system bootup. > + */ > +static int __initdata nr_present_sections; > + > /* Record a memory area against a node. */ > void __init memory_present(int nid, unsigned long start, unsigned long end) > { > @@ -229,6 +235,7 @@ void __init memory_present(int nid, unsigned long start, unsigned long end) > ms->section_mem_map = sparse_encode_early_nid(nid) | > SECTION_IS_ONLINE; > section_mark_present(ms); > + nr_present_sections++; > } > } > } > -- > 2.13.6 >
diff --git a/mm/sparse.c b/mm/sparse.c index f13f2723950a..6314303130b0 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -200,6 +200,12 @@ static inline int next_present_section_nr(int section_nr) (section_nr <= __highest_present_section_nr)); \ section_nr = next_present_section_nr(section_nr)) +/* + * Record how many memory sections are marked as present + * during system bootup. + */ +static int __initdata nr_present_sections; + /* Record a memory area against a node. */ void __init memory_present(int nid, unsigned long start, unsigned long end) { @@ -229,6 +235,7 @@ void __init memory_present(int nid, unsigned long start, unsigned long end) ms->section_mem_map = sparse_encode_early_nid(nid) | SECTION_IS_ONLINE; section_mark_present(ms); + nr_present_sections++; } } }