Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752596Ab3IQKCY (ORCPT ); Tue, 17 Sep 2013 06:02:24 -0400 Received: from jacques.telenet-ops.be ([195.130.132.50]:53587 "EHLO jacques.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752492Ab3IQKCT (ORCPT ); Tue, 17 Sep 2013 06:02:19 -0400 From: Geert Uytterhoeven To: linux-m68k@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kexec@lists.infradead.org, Geert Uytterhoeven Subject: [PATCH 3/3] [RFC] m68k: Add System RAM to /proc/iomem Date: Tue, 17 Sep 2013 12:01:33 +0200 Message-Id: <1379412095-7213-4-git-send-email-geert@linux-m68k.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1379412095-7213-1-git-send-email-geert@linux-m68k.org> References: <1379412095-7213-1-git-send-email-geert@linux-m68k.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2542 Lines: 78 We've resisted adding System RAM to /proc/iomem because it is the wrong place for it. Unfortunately we continue to find tools that rely on this behaviour (e.g. kdump) so give up and add it in. As the ST-RAM Pool is now a child of the first System RAM resource, it must be switched from request_resource() to insert_resource(). Cfr. commit c40dd2f76644016ca7677545fc846ec2470d70a1 ("powerpc: Add System RAM to /proc/iomem"). Signed-off-by: Geert Uytterhoeven --- arch/m68k/atari/stram.c | 2 +- arch/m68k/kernel/setup_mm.c | 23 +++++++++++++++++++++++ 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/arch/m68k/atari/stram.c b/arch/m68k/atari/stram.c index 0810c8d..74eaed4 100644 --- a/arch/m68k/atari/stram.c +++ b/arch/m68k/atari/stram.c @@ -102,7 +102,7 @@ void __init atari_stram_reserve_pages(void *start_mem) stram_pool.start = (resource_size_t)alloc_bootmem_low_pages(pool_size); stram_pool.end = stram_pool.start + pool_size - 1; - request_resource(&iomem_resource, &stram_pool); + insert_resource(&iomem_resource, &stram_pool); pr_debug("atari_stram pool: size = %lu bytes, resource = %pR\n", pool_size, &stram_pool); diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c index cb7b0c9..55d718a 100644 --- a/arch/m68k/kernel/setup_mm.c +++ b/arch/m68k/kernel/setup_mm.c @@ -215,6 +215,27 @@ static void __init m68k_parse_bootinfo(const struct bi_record *record) #endif } +/* + * System memory should not be in /proc/iomem but various tools expect it + * (e.g. kdump). + */ +static int __init add_system_ram_resources(void) +{ + int i; + + for (i = 0; i < m68k_num_memory; i++) { + struct resource *res; + res = alloc_bootmem(sizeof(struct resource)); + res->name = "System RAM"; + res->start = m68k_memory[i].addr; + res->end = m68k_memory[i].addr + m68k_memory[i].size - 1; + res->flags = IORESOURCE_MEM; + WARN_ON(request_resource(&iomem_resource, res) < 0); + } + + return 0; +} + void __init setup_arch(char **cmdline_p) { #ifndef CONFIG_SUN3 @@ -344,6 +365,8 @@ void __init setup_arch(char **cmdline_p) paging_init(); + add_system_ram_resources(); + #ifndef CONFIG_SUN3 for (i = 1; i < m68k_num_memory; i++) free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr, -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/