Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934871Ab0HFFSm (ORCPT ); Fri, 6 Aug 2010 01:18:42 -0400 Received: from e23smtp06.au.ibm.com ([202.81.31.148]:41687 "EHLO e23smtp06.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933784Ab0HFFPg (ORCPT ); Fri, 6 Aug 2010 01:15:36 -0400 From: Benjamin Herrenschmidt To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, torvalds@linux-foundation.org, Benjamin Herrenschmidt Subject: [PATCH 36/43] memblock: Add debugfs files to dump the arrays content Date: Fri, 6 Aug 2010 15:15:17 +1000 Message-Id: <1281071724-28740-37-git-send-email-benh@kernel.crashing.org> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1281071724-28740-1-git-send-email-benh@kernel.crashing.org> References: <1281071724-28740-1-git-send-email-benh@kernel.crashing.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2219 Lines: 79 Signed-off-by: Benjamin Herrenschmidt --- mm/memblock.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 51 insertions(+), 0 deletions(-) diff --git a/mm/memblock.c b/mm/memblock.c index 9de5fcd..cc15be2 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -16,6 +16,8 @@ #include #include #include +#include +#include #include struct memblock memblock; @@ -740,3 +742,52 @@ static int __init early_memblock(char *p) } early_param("memblock", early_memblock); +#ifdef CONFIG_DEBUG_FS + +static int memblock_debug_show(struct seq_file *m, void *private) +{ + struct memblock_type *type = m->private; + struct memblock_region *reg; + int i; + + for (i = 0; i < type->cnt; i++) { + reg = &type->regions[i]; + seq_printf(m, "%4d: ", i); + if (sizeof(phys_addr_t) == 4) + seq_printf(m, "0x%08lx..0x%08lx\n", + (unsigned long)reg->base, + (unsigned long)(reg->base + reg->size - 1)); + else + seq_printf(m, "0x%016llx..0x%016llx\n", + (unsigned long long)reg->base, + (unsigned long long)(reg->base + reg->size - 1)); + + } + return 0; +} + +static int memblock_debug_open(struct inode *inode, struct file *file) +{ + return single_open(file, memblock_debug_show, inode->i_private); +} + +static const struct file_operations memblock_debug_fops = { + .open = memblock_debug_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int __init memblock_init_debugfs(void) +{ + struct dentry *root = debugfs_create_dir("memblock", NULL); + if (!root) + return -ENXIO; + debugfs_create_file("memory", S_IRUGO, root, &memblock.memory, &memblock_debug_fops); + debugfs_create_file("reserved", S_IRUGO, root, &memblock.reserved, &memblock_debug_fops); + + return 0; +} +__initcall(memblock_init_debugfs); + +#endif /* CONFIG_DEBUG_FS */ -- 1.7.0.4 -- 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/