From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f197.google.com (mail-qk0-f197.google.com [209.85.220.197]) by kanga.kvack.org (Postfix) with ESMTP id 85C946B03A1 for ; Tue, 18 Apr 2017 14:27:42 -0400 (EDT) Received: by mail-qk0-f197.google.com with SMTP id c71so294748qke.11 for ; Tue, 18 Apr 2017 11:27:42 -0700 (PDT) Received: from mail-qk0-f177.google.com (mail-qk0-f177.google.com. [209.85.220.177]) by mx.google.com with ESMTPS id y13si14576761qka.29.2017.04.18.11.27.27 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 18 Apr 2017 11:27:31 -0700 (PDT) Received: by mail-qk0-f177.google.com with SMTP id f133so1183548qke.2 for ; Tue, 18 Apr 2017 11:27:27 -0700 (PDT) From: Laura Abbott Subject: [PATCHv4 02/12] cma: Introduce cma_for_each_area Date: Tue, 18 Apr 2017 11:27:04 -0700 Message-Id: <1492540034-5466-3-git-send-email-labbott@redhat.com> In-Reply-To: <1492540034-5466-1-git-send-email-labbott@redhat.com> References: <1492540034-5466-1-git-send-email-labbott@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: To: Sumit Semwal , Riley Andrews , arve@android.com, Greg Kroah-Hartman Cc: Laura Abbott , romlem@google.com, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, linaro-mm-sig@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, Brian Starkey , Daniel Vetter , Mark Brown , Benjamin Gaignard , linux-mm@kvack.org, Laurent Pinchart Frameworks (e.g. Ion) may want to iterate over each possible CMA area to allow for enumeration. Introduce a function to allow a callback. Signed-off-by: Laura Abbott --- include/linux/cma.h | 2 ++ mm/cma.c | 14 ++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/include/linux/cma.h b/include/linux/cma.h index d41d1f8..3e8fbf5 100644 --- a/include/linux/cma.h +++ b/include/linux/cma.h @@ -34,4 +34,6 @@ extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size, extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align, gfp_t gfp_mask); extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count); + +extern int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data); #endif diff --git a/mm/cma.c b/mm/cma.c index 43c1b2c..978b4a1 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -504,3 +504,17 @@ bool cma_release(struct cma *cma, const struct page *pages, unsigned int count) return true; } + +int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data) +{ + int i; + + for (i = 0; i < cma_area_count; i++) { + int ret = it(&cma_areas[i], data); + + if (ret) + return ret; + } + + return 0; +} -- 2.7.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org