From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id 89AF5600429 for ; Fri, 6 Aug 2010 01:15:37 -0400 (EDT) Received: from d23relay04.au.ibm.com (d23relay04.au.ibm.com [202.81.31.246]) by e23smtp02.au.ibm.com (8.14.4/8.13.1) with ESMTP id o765BUO0000448 for ; Fri, 6 Aug 2010 15:11:30 +1000 Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay04.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o765FY071200150 for ; Fri, 6 Aug 2010 15:15:34 +1000 Received: from d23av02.au.ibm.com (loopback [127.0.0.1]) by d23av02.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id o765FYB1017083 for ; Fri, 6 Aug 2010 15:15:34 +1000 From: 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> 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: owner-linux-mm@kvack.org To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, torvalds@linux-foundation.org, Benjamin Herrenschmidt List-ID: 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, 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