diff mbox series

[v2,03/14] loader: drop local implementations of find_efi_mmap_size

Message ID 20170803100432.29913-4-leif.lindholm@linaro.org
State Superseded
Headers show
Series efi: improved correctness, arm unification, and cleanup | expand

Commit Message

Leif Lindholm Aug. 3, 2017, 10:04 a.m. UTC
Now we have a grub_efi_find_mmap_size, replace near-identical implementations
in i386/linux and mbi2 loaders with calls to that one.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>

---
 grub-core/loader/i386/linux.c     | 51 +--------------------------------------
 grub-core/loader/multiboot_mbi2.c | 38 +----------------------------
 2 files changed, 2 insertions(+), 87 deletions(-)

-- 
2.11.0


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Comments

Vladimir 'phcoder' Serbinenko Aug. 3, 2017, 3:20 p.m. UTC | #1
LGTM

Le Thu, Aug 3, 2017 à 12:07 PM, Leif Lindholm <leif.lindholm@linaro.org> a
écrit :

> Now we have a grub_efi_find_mmap_size, replace near-identical

> implementations

> in i386/linux and mbi2 loaders with calls to that one.

>

> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>

> ---

>  grub-core/loader/i386/linux.c     | 51

> +--------------------------------------

>  grub-core/loader/multiboot_mbi2.c | 38 +----------------------------

>  2 files changed, 2 insertions(+), 87 deletions(-)

>

> diff --git a/grub-core/loader/i386/linux.c b/grub-core/loader/i386/linux.c

> index 083f9417c..dfd50472f 100644

> --- a/grub-core/loader/i386/linux.c

> +++ b/grub-core/loader/i386/linux.c

> @@ -101,55 +101,6 @@ page_align (grub_size_t size)

>    return (size + (1 << 12) - 1) & (~((1 << 12) - 1));

>  }

>

> -#ifdef GRUB_MACHINE_EFI

> -/* Find the optimal number of pages for the memory map. Is it better to

> -   move this code to efi/mm.c?  */

> -static grub_efi_uintn_t

> -find_efi_mmap_size (void)

> -{

> -  static grub_efi_uintn_t mmap_size = 0;

> -

> -  if (mmap_size != 0)

> -    return mmap_size;

> -

> -  mmap_size = (1 << 12);

> -  while (1)

> -    {

> -      int ret;

> -      grub_efi_memory_descriptor_t *mmap;

> -      grub_efi_uintn_t desc_size;

> -      grub_efi_uintn_t cur_mmap_size = mmap_size;

> -

> -      mmap = grub_malloc (cur_mmap_size);

> -      if (! mmap)

> -       return 0;

> -

> -      ret = grub_efi_get_memory_map (&cur_mmap_size, mmap, 0, &desc_size,

> 0);

> -      grub_free (mmap);

> -

> -      if (ret < 0)

> -       {

> -         grub_error (GRUB_ERR_IO, "cannot get memory map");

> -         return 0;

> -       }

> -      else if (ret > 0)

> -       break;

> -

> -      if (mmap_size < cur_mmap_size)

> -       mmap_size = cur_mmap_size;

> -      mmap_size += (1 << 12);

> -    }

> -

> -  /* Increase the size a bit for safety, because GRUB allocates more on

> -     later, and EFI itself may allocate more.  */

> -  mmap_size += (3 << 12);

> -

> -  mmap_size = page_align (mmap_size);

> -  return mmap_size;

> -}

> -

> -#endif

> -

>  /* Helper for find_mmap_size.  */

>  static int

>  count_hook (grub_uint64_t addr __attribute__ ((unused)),

> @@ -560,7 +511,7 @@ grub_linux_boot (void)

>    ctx.real_size = ALIGN_UP (cl_offset + maximal_cmdline_size, 4096);

>

>  #ifdef GRUB_MACHINE_EFI

> -  efi_mmap_size = find_efi_mmap_size ();

> +  efi_mmap_size = grub_efi_find_mmap_size ();

>    if (efi_mmap_size == 0)

>      return grub_errno;

>  #endif

> diff --git a/grub-core/loader/multiboot_mbi2.c

> b/grub-core/loader/multiboot_mbi2.c

> index b0679a9f6..b5f961494 100644

> --- a/grub-core/loader/multiboot_mbi2.c

> +++ b/grub-core/loader/multiboot_mbi2.c

> @@ -407,42 +407,6 @@ acpiv2_size (void)

>

>  static grub_efi_uintn_t efi_mmap_size = 0;

>

> -/* Find the optimal number of pages for the memory map. Is it better to

> -   move this code to efi/mm.c?  */

> -static void

> -find_efi_mmap_size (void)

> -{

> -  efi_mmap_size = (1 << 12);

> -  while (1)

> -    {

> -      int ret;

> -      grub_efi_memory_descriptor_t *mmap;

> -      grub_efi_uintn_t desc_size;

> -      grub_efi_uintn_t cur_mmap_size = efi_mmap_size;

> -

> -      mmap = grub_malloc (cur_mmap_size);

> -      if (! mmap)

> -       return;

> -

> -      ret = grub_efi_get_memory_map (&cur_mmap_size, mmap, 0, &desc_size,

> 0);

> -      grub_free (mmap);

> -

> -      if (ret < 0)

> -       return;

> -      else if (ret > 0)

> -       break;

> -

> -      if (efi_mmap_size < cur_mmap_size)

> -       efi_mmap_size = cur_mmap_size;

> -      efi_mmap_size += (1 << 12);

> -    }

> -

> -  /* Increase the size a bit for safety, because GRUB allocates more on

> -     later, and EFI itself may allocate more.  */

> -  efi_mmap_size += (3 << 12);

> -

> -  efi_mmap_size = ALIGN_UP (efi_mmap_size, 4096);

> -}

>  #endif

>

>  static grub_size_t

> @@ -463,7 +427,7 @@ grub_multiboot_get_mbi_size (void)

>  {

>  #ifdef GRUB_MACHINE_EFI

>    if (!keep_bs && !efi_mmap_size)

> -    find_efi_mmap_size ();

> +    efi_mmap_size = grub_efi_find_mmap_size ();

>  #endif

>    return 2 * sizeof (grub_uint32_t) + sizeof (struct multiboot_tag)

>      + sizeof (struct multiboot_tag)

> --

> 2.11.0

>

>

> _______________________________________________

> Grub-devel mailing list

> Grub-devel@gnu.org

> https://lists.gnu.org/mailman/listinfo/grub-devel

>
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diff mbox series

Patch

diff --git a/grub-core/loader/i386/linux.c b/grub-core/loader/i386/linux.c
index 083f9417c..dfd50472f 100644
--- a/grub-core/loader/i386/linux.c
+++ b/grub-core/loader/i386/linux.c
@@ -101,55 +101,6 @@  page_align (grub_size_t size)
   return (size + (1 << 12) - 1) & (~((1 << 12) - 1));
 }
 
-#ifdef GRUB_MACHINE_EFI
-/* Find the optimal number of pages for the memory map. Is it better to
-   move this code to efi/mm.c?  */
-static grub_efi_uintn_t
-find_efi_mmap_size (void)
-{
-  static grub_efi_uintn_t mmap_size = 0;
-
-  if (mmap_size != 0)
-    return mmap_size;
-
-  mmap_size = (1 << 12);
-  while (1)
-    {
-      int ret;
-      grub_efi_memory_descriptor_t *mmap;
-      grub_efi_uintn_t desc_size;
-      grub_efi_uintn_t cur_mmap_size = mmap_size;
-
-      mmap = grub_malloc (cur_mmap_size);
-      if (! mmap)
-	return 0;
-
-      ret = grub_efi_get_memory_map (&cur_mmap_size, mmap, 0, &desc_size, 0);
-      grub_free (mmap);
-
-      if (ret < 0)
-	{
-	  grub_error (GRUB_ERR_IO, "cannot get memory map");
-	  return 0;
-	}
-      else if (ret > 0)
-	break;
-
-      if (mmap_size < cur_mmap_size)
-	mmap_size = cur_mmap_size;
-      mmap_size += (1 << 12);
-    }
-
-  /* Increase the size a bit for safety, because GRUB allocates more on
-     later, and EFI itself may allocate more.  */
-  mmap_size += (3 << 12);
-
-  mmap_size = page_align (mmap_size);
-  return mmap_size;
-}
-
-#endif
-
 /* Helper for find_mmap_size.  */
 static int
 count_hook (grub_uint64_t addr __attribute__ ((unused)),
@@ -560,7 +511,7 @@  grub_linux_boot (void)
   ctx.real_size = ALIGN_UP (cl_offset + maximal_cmdline_size, 4096);
 
 #ifdef GRUB_MACHINE_EFI
-  efi_mmap_size = find_efi_mmap_size ();
+  efi_mmap_size = grub_efi_find_mmap_size ();
   if (efi_mmap_size == 0)
     return grub_errno;
 #endif
diff --git a/grub-core/loader/multiboot_mbi2.c b/grub-core/loader/multiboot_mbi2.c
index b0679a9f6..b5f961494 100644
--- a/grub-core/loader/multiboot_mbi2.c
+++ b/grub-core/loader/multiboot_mbi2.c
@@ -407,42 +407,6 @@  acpiv2_size (void)
 
 static grub_efi_uintn_t efi_mmap_size = 0;
 
-/* Find the optimal number of pages for the memory map. Is it better to
-   move this code to efi/mm.c?  */
-static void
-find_efi_mmap_size (void)
-{
-  efi_mmap_size = (1 << 12);
-  while (1)
-    {
-      int ret;
-      grub_efi_memory_descriptor_t *mmap;
-      grub_efi_uintn_t desc_size;
-      grub_efi_uintn_t cur_mmap_size = efi_mmap_size;
-
-      mmap = grub_malloc (cur_mmap_size);
-      if (! mmap)
-	return;
-
-      ret = grub_efi_get_memory_map (&cur_mmap_size, mmap, 0, &desc_size, 0);
-      grub_free (mmap);
-
-      if (ret < 0)
-	return;
-      else if (ret > 0)
-	break;
-
-      if (efi_mmap_size < cur_mmap_size)
-	efi_mmap_size = cur_mmap_size;
-      efi_mmap_size += (1 << 12);
-    }
-
-  /* Increase the size a bit for safety, because GRUB allocates more on
-     later, and EFI itself may allocate more.  */
-  efi_mmap_size += (3 << 12);
-
-  efi_mmap_size = ALIGN_UP (efi_mmap_size, 4096);
-}
 #endif
 
 static grub_size_t
@@ -463,7 +427,7 @@  grub_multiboot_get_mbi_size (void)
 {
 #ifdef GRUB_MACHINE_EFI
   if (!keep_bs && !efi_mmap_size)
-    find_efi_mmap_size ();    
+    efi_mmap_size = grub_efi_find_mmap_size ();
 #endif
   return 2 * sizeof (grub_uint32_t) + sizeof (struct multiboot_tag)
     + sizeof (struct multiboot_tag)