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efi/libstub: Add function description of efi_allocate_pages() 

Provide a Sphinx style function description for efi_allocate_pages().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Link: https://lore.kernel.org/r/20200216171340.6070-1-xypron.glpk@gmx.de
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Heinrich Schuchardt 2020-02-16 18:13:40 +01:00 committed by Ard Biesheuvel
parent 2931d526d5
commit eaa6fc67e1
1 changed files with 14 additions and 2 deletions
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16
drivers/firmware/efi/libstub/mem.c
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@ -65,8 +65,20 @@ efi_status_t efi_get_memory_map(struct efi_boot_memmap *map)
return status;
}
/*
* Allocate at the highest possible address that is not above 'max'.
/**
* efi_allocate_pages() - Allocate memory pages
* @size: minimum number of bytes to allocate
* @addr: On return the address of the first allocated page. The first
* allocated page has alignment EFI_ALLOC_ALIGN which is an
* architecture dependent multiple of the page size.
* @max: the address that the last allocated memory page shall not
* exceed
*
* Allocate pages as EFI_LOADER_DATA. The allocated pages are aligned according
* to EFI_ALLOC_ALIGN. The last allocated page will not exceed the address
* given by @max.
*
* Return: status code
*/
efi_status_t efi_allocate_pages(unsigned long size, unsigned long *addr,
unsigned long max)