diff mbox

[v3] mm/memblock: add missing include <linux/bootmem.h>

Message ID 20180626184422.24974-1-malat@debian.org (mailing list archive)
State New, archived
Headers show

Commit Message

Mathieu Malaterre June 26, 2018, 6:44 p.m. UTC
Commit 26f09e9b3a06 ("mm/memblock: add memblock memory allocation apis")
introduced two new function definitions:

  memblock_virt_alloc_try_nid_nopanic()
  memblock_virt_alloc_try_nid()

Commit ea1f5f3712af ("mm: define memblock_virt_alloc_try_nid_raw")
introduced the following function definition:

  memblock_virt_alloc_try_nid_raw()

This commit adds an include of header file <linux/bootmem.h> to provide
the missing function prototypes. Silence the following gcc warning
(W=1):

  mm/memblock.c:1334:15: warning: no previous prototype for `memblock_virt_alloc_try_nid_raw' [-Wmissing-prototypes]
  mm/memblock.c:1371:15: warning: no previous prototype for `memblock_virt_alloc_try_nid_nopanic' [-Wmissing-prototypes]
  mm/memblock.c:1407:15: warning: no previous prototype for `memblock_virt_alloc_try_nid' [-Wmissing-prototypes]

Also adds #ifdef blockers to prevent compilation failure on mips/ia64 where
CONFIG_NO_BOOTMEM=n as could be seen in commit commit 6cc22dc08a24 ("revert
"mm/memblock: add missing include <linux/bootmem.h>"").

Because Makefile already does:

  obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o

The #ifdef has been simplified from:

  #if defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM)

to simply:

  #if defined(CONFIG_NO_BOOTMEM)

Suggested-by: Tony Luck <tony.luck@intel.com>
Suggested-by: Michal Hocko <mhocko@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
---
v3: Add missing reference to commit 6cc22dc08a24
v2: Simplify #ifdef

 mm/memblock.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

Tony Luck July 20, 2018, 7:16 p.m. UTC | #1
On Tue, Jun 26, 2018 at 11:44 AM, Mathieu Malaterre <malat@debian.org> wrote:
> Because Makefile already does:
>
>   obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o
>
> The #ifdef has been simplified from:
>
>   #if defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM)
>
> to simply:
>
>   #if defined(CONFIG_NO_BOOTMEM)

Is this sitting in a queue somewhere ready to go to Linus?

I don't see it upstream yet.

>
> Suggested-by: Tony Luck <tony.luck@intel.com>
> Suggested-by: Michal Hocko <mhocko@kernel.org>
> Acked-by: Michal Hocko <mhocko@suse.com>
> Signed-off-by: Mathieu Malaterre <malat@debian.org>
> ---
> v3: Add missing reference to commit 6cc22dc08a24
> v2: Simplify #ifdef
>
>  mm/memblock.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/mm/memblock.c b/mm/memblock.c
> index 03d48d8835ba..611a970ac902 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -20,6 +20,7 @@
>  #include <linux/kmemleak.h>
>  #include <linux/seq_file.h>
>  #include <linux/memblock.h>
> +#include <linux/bootmem.h>
>
>  #include <asm/sections.h>
>  #include <linux/io.h>
> @@ -1224,6 +1225,7 @@ phys_addr_t __init memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, i
>         return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
>  }
>
> +#if defined(CONFIG_NO_BOOTMEM)
>  /**
>   * memblock_virt_alloc_internal - allocate boot memory block
>   * @size: size of memory block to be allocated in bytes
> @@ -1431,6 +1433,7 @@ void * __init memblock_virt_alloc_try_nid(
>               (u64)max_addr);
>         return NULL;
>  }
> +#endif
>
>  /**
>   * __memblock_free_early - free boot memory block
> --
> 2.11.0
>
Andrew Morton July 20, 2018, 7:30 p.m. UTC | #2
On Fri, 20 Jul 2018 12:16:05 -0700 Tony Luck <tony.luck@gmail.com> wrote:

> On Tue, Jun 26, 2018 at 11:44 AM, Mathieu Malaterre <malat@debian.org> wrote:
> > Because Makefile already does:
> >
> >   obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o
> >
> > The #ifdef has been simplified from:
> >
> >   #if defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM)
> >
> > to simply:
> >
> >   #if defined(CONFIG_NO_BOOTMEM)
> 
> Is this sitting in a queue somewhere ready to go to Linus?

linux-next ;)

> I don't see it upstream yet.

For some brainfarty reason I had it for 4.19-rc1.  Shall send it in
today.
diff mbox

Patch

diff --git a/mm/memblock.c b/mm/memblock.c
index 03d48d8835ba..611a970ac902 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -20,6 +20,7 @@ 
 #include <linux/kmemleak.h>
 #include <linux/seq_file.h>
 #include <linux/memblock.h>
+#include <linux/bootmem.h>
 
 #include <asm/sections.h>
 #include <linux/io.h>
@@ -1224,6 +1225,7 @@  phys_addr_t __init memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, i
 	return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
 }
 
+#if defined(CONFIG_NO_BOOTMEM)
 /**
  * memblock_virt_alloc_internal - allocate boot memory block
  * @size: size of memory block to be allocated in bytes
@@ -1431,6 +1433,7 @@  void * __init memblock_virt_alloc_try_nid(
 	      (u64)max_addr);
 	return NULL;
 }
+#endif
 
 /**
  * __memblock_free_early - free boot memory block