From patchwork Thu Mar 2 21:44:40 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laura Abbott X-Patchwork-Id: 9601617 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 673D760453 for ; Thu, 2 Mar 2017 21:45:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 575452841C for ; Thu, 2 Mar 2017 21:45:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4C321285EF; Thu, 2 Mar 2017 21:45:37 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RCVD_IN_SORBS_SPAM autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C06B22841C for ; Thu, 2 Mar 2017 21:45:36 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 862BC6EC93; Thu, 2 Mar 2017 21:45:19 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-qk0-f180.google.com (mail-qk0-f180.google.com [209.85.220.180]) by gabe.freedesktop.org (Postfix) with ESMTPS id 734B56EC93 for ; Thu, 2 Mar 2017 21:45:18 +0000 (UTC) Received: by mail-qk0-f180.google.com with SMTP id s186so146628124qkb.1 for ; Thu, 02 Mar 2017 13:45:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Fs0/fSJfnPpxR2PGDFJdIQOgTPNkN4fh/W77loWMo8E=; b=RgEmNxig2hPzu2bPoJFAa2w3jZwlmYe2+eg/sQVlra8Oea9BoCaEI7ABU6+czILm5s VHBvWFJUOp2Asd9RGE7DWhSprb+H4zl+Yk365rKQn+EvxFR8K3t2d8vQRY+8MP4x33WO gUDpaQDX7J2ZvmsgmXoMm/aI7UQ4TBba5BlOO/p8md7Vkmygxxih2Z/9Lcjjujj2kADq wxjE31uolJ8jvHXaMtGAwchXoD9CLziNMMHOoe7Oh7F+tZLomZawxh+rksRwgQjblIBu dlFCPiUJ+2CPdLSaDbdqYteZQnzew2Zxr4Pwn4sMWWvabcvnHBoKFFosVXBUMoydEykK QY9w== X-Gm-Message-State: AMke39mw+LKI4rK+fFr/wy7xH7/BkyV2eZ9wTNh2Vp0SF8uACJXOcMFhwKmO7vNzOr8IvBa+ X-Received: by 10.200.46.196 with SMTP id i4mr20100276qta.17.1488491117607; Thu, 02 Mar 2017 13:45:17 -0800 (PST) Received: from labbott-redhat-machine.redhat.com ([2601:602:9802:a8dc::5ce7]) by smtp.gmail.com with ESMTPSA id r10sm6261671qte.1.2017.03.02.13.45.14 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 02 Mar 2017 13:45:16 -0800 (PST) From: Laura Abbott To: Sumit Semwal , Riley Andrews , arve@android.com Subject: [RFC PATCH 08/12] cma: Store a name in the cma structure Date: Thu, 2 Mar 2017 13:44:40 -0800 Message-Id: <1488491084-17252-9-git-send-email-labbott@redhat.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1488491084-17252-1-git-send-email-labbott@redhat.com> References: <1488491084-17252-1-git-send-email-labbott@redhat.com> Cc: devel@driverdev.osuosl.org, romlem@google.com, Greg Kroah-Hartman , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-mm@kvack.org, Mark Brown , Daniel Vetter , linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Frameworks that may want to enumerate CMA heaps (e.g. Ion) will find it useful to have an explicit name attached to each region. Store the name in each CMA structure. Signed-off-by: Laura Abbott --- drivers/base/dma-contiguous.c | 5 +++-- include/linux/cma.h | 4 +++- mm/cma.c | 11 +++++++++-- mm/cma.h | 1 + mm/cma_debug.c | 2 +- 5 files changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c index e167a1e1..4f638ab 100644 --- a/drivers/base/dma-contiguous.c +++ b/drivers/base/dma-contiguous.c @@ -165,7 +165,8 @@ int __init dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base, { int ret; - ret = cma_declare_contiguous(base, size, limit, 0, 0, fixed, res_cma); + ret = cma_declare_contiguous(base, size, limit, 0, 0, fixed, + "reserved", res_cma); if (ret) return ret; @@ -257,7 +258,7 @@ static int __init rmem_cma_setup(struct reserved_mem *rmem) return -EINVAL; } - err = cma_init_reserved_mem(rmem->base, rmem->size, 0, &cma); + err = cma_init_reserved_mem(rmem->base, rmem->size, 0, rmem->name, &cma); if (err) { pr_err("Reserved memory: unable to setup CMA region\n"); return err; diff --git a/include/linux/cma.h b/include/linux/cma.h index 6f0a91b..49f98ea 100644 --- a/include/linux/cma.h +++ b/include/linux/cma.h @@ -21,13 +21,15 @@ struct cma; extern unsigned long totalcma_pages; extern phys_addr_t cma_get_base(const struct cma *cma); extern unsigned long cma_get_size(const struct cma *cma); +extern const char *cma_get_name(const struct cma *cma); extern int __init cma_declare_contiguous(phys_addr_t base, phys_addr_t size, phys_addr_t limit, phys_addr_t alignment, unsigned int order_per_bit, - bool fixed, struct cma **res_cma); + bool fixed, const char *name, struct cma **res_cma); extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size, unsigned int order_per_bit, + const char *name, struct cma **res_cma); extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align); extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count); diff --git a/mm/cma.c b/mm/cma.c index 94b3460..4a93d2b 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -53,6 +53,11 @@ unsigned long cma_get_size(const struct cma *cma) return cma->count << PAGE_SHIFT; } +const char *cma_get_name(const struct cma *cma) +{ + return cma->name ? cma->name : "(undefined)"; +} + static unsigned long cma_bitmap_aligned_mask(const struct cma *cma, int align_order) { @@ -168,6 +173,7 @@ core_initcall(cma_init_reserved_areas); */ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size, unsigned int order_per_bit, + const char *name, struct cma **res_cma) { struct cma *cma; @@ -201,6 +207,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size, cma->base_pfn = PFN_DOWN(base); cma->count = size >> PAGE_SHIFT; cma->order_per_bit = order_per_bit; + cma->name = name; *res_cma = cma; cma_area_count++; totalcma_pages += (size / PAGE_SIZE); @@ -229,7 +236,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size, int __init cma_declare_contiguous(phys_addr_t base, phys_addr_t size, phys_addr_t limit, phys_addr_t alignment, unsigned int order_per_bit, - bool fixed, struct cma **res_cma) + bool fixed, const char *name, struct cma **res_cma) { phys_addr_t memblock_end = memblock_end_of_DRAM(); phys_addr_t highmem_start; @@ -335,7 +342,7 @@ int __init cma_declare_contiguous(phys_addr_t base, base = addr; } - ret = cma_init_reserved_mem(base, size, order_per_bit, res_cma); + ret = cma_init_reserved_mem(base, size, order_per_bit, name, res_cma); if (ret) goto err; diff --git a/mm/cma.h b/mm/cma.h index 17c75a4..4986128 100644 --- a/mm/cma.h +++ b/mm/cma.h @@ -11,6 +11,7 @@ struct cma { struct hlist_head mem_head; spinlock_t mem_head_lock; #endif + const char *name; }; extern struct cma cma_areas[MAX_CMA_AREAS]; diff --git a/mm/cma_debug.c b/mm/cma_debug.c index f8e4b60..4742efd 100644 --- a/mm/cma_debug.c +++ b/mm/cma_debug.c @@ -167,7 +167,7 @@ static void cma_debugfs_add_one(struct cma *cma, int idx) char name[16]; int u32s; - sprintf(name, "cma-%d", idx); + sprintf(name, "cma-%s", cma->name); tmp = debugfs_create_dir(name, cma_debugfs_root);