From patchwork Mon Apr 3 18:57:43 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laura Abbott X-Patchwork-Id: 9660405 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 D34A36032D for ; Mon, 3 Apr 2017 19:04:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C7E4A284C2 for ; Mon, 3 Apr 2017 19:04:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BBE93284F0; Mon, 3 Apr 2017 19:04:52 +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=-6.4 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_SPAM autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 51AEE284C2 for ; Mon, 3 Apr 2017 19:04:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751883AbdDCS6P (ORCPT ); Mon, 3 Apr 2017 14:58:15 -0400 Received: from mail-qk0-f173.google.com ([209.85.220.173]:34615 "EHLO mail-qk0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751694AbdDCS6O (ORCPT ); Mon, 3 Apr 2017 14:58:14 -0400 Received: by mail-qk0-f173.google.com with SMTP id d10so123459802qke.1 for ; Mon, 03 Apr 2017 11:58:13 -0700 (PDT) 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=7UUe4Mc3BCJlXat5vEVc864XZUycwfkL11PXJEpdRAI=; b=luLZrm8SWwO6mImQlq9ZEKMtiwIAQjHQVt5eacAzkS3ViPqLAFkREMBxcG0q2xBdT6 3ua8HQm+bWaT+EXmBxxlc0QIZF4dYzwTCUy3FyDzVlQki9N5A9Y8/IVMHJ9pdeUStv5w QhLTwX4j9cRqEQjHfeb5ntRbHHicPiqA8WLuc/TdIa7hAVt04AkxbnAbZkFLZdBo3nlz Xt0nHN7V2s0UkiSdWHxa2dZ0oZlT+pbQ+gkITNAHjhvLfoOMN3A+KxwPKgc1FoNg4PQd tZejb+Dl/Tl/W+t9X6UoSC2M8r8EtKBpEzPpiVm9vlrDoYrtAMvHgy1CIRVahCyA1mit 8Rlw== X-Gm-Message-State: AFeK/H2TCBIDDM5AiW9OaGVqCFz3hJNJB8x5Cvqz0XrM9ej4konozNqoTajgwFWJF3KZGRjO X-Received: by 10.55.155.150 with SMTP id d144mr3861550qke.75.1491245893133; Mon, 03 Apr 2017 11:58:13 -0700 (PDT) Received: from labbott-redhat-machine.redhat.com ([2601:602:9802:a8dc:1722:8a6b:a66c:79eb]) by smtp.gmail.com with ESMTPSA id e5sm10173689qtc.6.2017.04.03.11.58.09 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 03 Apr 2017 11:58:11 -0700 (PDT) From: Laura Abbott To: Sumit Semwal , Riley Andrews , arve@android.com Cc: Laura Abbott , romlem@google.com, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, linaro-mm-sig@lists.linaro.org, Greg Kroah-Hartman , 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 Subject: [PATCHv3 01/22] cma: Store a name in the cma structure Date: Mon, 3 Apr 2017 11:57:43 -0700 Message-Id: <1491245884-15852-2-git-send-email-labbott@redhat.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1491245884-15852-1-git-send-email-labbott@redhat.com> References: <1491245884-15852-1-git-send-email-labbott@redhat.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org 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 --- v3: Added default name suggestion per Sumit. Fixup powerpc call site. --- arch/powerpc/kvm/book3s_hv_builtin.c | 3 ++- drivers/base/dma-contiguous.c | 5 +++-- include/linux/cma.h | 4 +++- mm/cma.c | 17 +++++++++++++++-- mm/cma.h | 1 + mm/cma_debug.c | 2 +- 6 files changed, 25 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index 4d6c64b..b739ff8 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -100,7 +100,8 @@ void __init kvm_cma_reserve(void) (unsigned long)selected_size / SZ_1M); align_size = HPT_ALIGN_PAGES << PAGE_SHIFT; cma_declare_contiguous(0, selected_size, 0, align_size, - KVM_CMA_CHUNK_ORDER - PAGE_SHIFT, false, &kvm_cma); + KVM_CMA_CHUNK_ORDER - PAGE_SHIFT, false, "kvm_cma", + &kvm_cma); } } diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c index b55804c..ea9726e 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; @@ -258,7 +259,7 @@ 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 03f32d0..d41d1f8 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, gfp_t gfp_mask); diff --git a/mm/cma.c b/mm/cma.c index a6033e3..43c1b2c 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; @@ -198,6 +204,13 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size, * subsystems (like slab allocator) are available. */ cma = &cma_areas[cma_area_count]; + if (name) { + cma->name = name; + } else { + cma->name = kasprintf(GFP_KERNEL, "cma%d\n", cma_area_count); + if (!cma->name) + return -ENOMEM; + } cma->base_pfn = PFN_DOWN(base); cma->count = size >> PAGE_SHIFT; cma->order_per_bit = order_per_bit; @@ -229,7 +242,7 @@ 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 +348,7 @@ 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 ffc0c3d..595b757 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);