Re: [PATCH v5 1/4] mm/sparse: Add a static variable nr_present_sections

[Pavel Tatashin]

Reviewed-by: Pavel Tatashin 
On Tue, Jun 26, 2018 at 9:31 PM 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 
> ---
>  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
>

Re: [PATCH v5 1/4] mm/sparse: Add a static variable nr_present_sections

[Pavel Tatashin]

Reviewed-by: Pavel Tatashin 
On Tue, Jun 26, 2018 at 9:31 PM 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 
> ---
>  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
>

[PATCH v5 1/4] mm/sparse: Add a static variable nr_present_sections

[Baoquan He]

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 
---
 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

[PATCH v5 1/4] mm/sparse: Add a static variable nr_present_sections

[Baoquan He]

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 
---
 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