From: Mark Salter Date: Fri, 10 Jan 2014 19:26:06 +0000 (-0500) Subject: efi: create memory map iteration helper X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=e885cd805fc6e65ef5150a211c7bac02f925af04;p=deliverable%2Flinux.git efi: create memory map iteration helper There are a lot of places in the kernel which iterate through an EFI memory map. Most of these places use essentially the same for-loop code. This patch adds a for_each_efi_memory_desc() helper to clean up all of the existing duplicate code and avoid more in the future. Signed-off-by: Mark Salter Signed-off-by: Leif Lindholm Signed-off-by: Matt Fleming --- diff --git a/include/linux/efi.h b/include/linux/efi.h index 6c100ff0cae4..82d0abb2b19f 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -863,6 +863,12 @@ extern int efi_set_rtc_mmss(const struct timespec *now); extern void efi_reserve_boot_services(void); extern struct efi_memory_map memmap; +/* Iterate through an efi_memory_map */ +#define for_each_efi_memory_desc(m, md) \ + for ((md) = (m)->map; \ + (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \ + (md) = (void *)(md) + (m)->desc_size) + /** * efi_range_is_wc - check the WC bit on an address range * @start: starting kvirt address