From mboxrd@z Thu Jan 1 00:00:00 1970 From: msalter@redhat.com (Mark Salter) Date: Fri, 10 Jan 2014 17:29:05 -0500 Subject: [PATCH 1/6] efi: create memory map iteration helper In-Reply-To: <1389392950-22457-1-git-send-email-msalter@redhat.com> References: <1389392950-22457-1-git-send-email-msalter@redhat.com> Message-ID: <1389392950-22457-2-git-send-email-msalter@redhat.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- include/linux/efi.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/efi.h b/include/linux/efi.h index 11ce678..9dc5b05 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -618,6 +618,12 @@ 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 -- 1.8.3.1