diff options
| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2018-11-18 17:58:49 +0100 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2018-12-02 21:59:37 +0100 |
| commit | c3772ca1e38f36f2486b44c27094421442414e5e (patch) | |
| tree | 9e0796c02e18c264c21bf0f3964cd20490174843 /include/efi_loader.h | |
| parent | 42910ff1baa9c6bf9e0eecbe252bf06e11861fa8 (diff) | |
efi_loader: macro efi_size_in_pages()
When allocating EFI memory pages the size in bytes has to be converted to
pages.
Provide a macro efi_size_in_pages() for this conversion.
Use it in the EFI subsystem and correct related comments.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'include/efi_loader.h')
| -rw-r--r-- | include/efi_loader.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/include/efi_loader.h b/include/efi_loader.h index f399e99506..3c90515fef 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -344,7 +344,16 @@ struct efi_simple_file_system_protocol *efi_simple_file_system( /* open file from device-path: */ struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp); - +/** + * efi_size_in_pages() - convert size in bytes to size in pages + * + * This macro returns the number of EFI memory pages required to hold 'size' + * bytes. + * + * @size: size in bytes + * Return: size in pages + */ +#define efi_size_in_pages(size) ((size + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT) /* Generic EFI memory allocator, call this to get memory */ void *efi_alloc(uint64_t len, int memory_type); /* More specific EFI memory allocator, called by EFI payloads */ |