From patchwork Mon May 10 10:37:34 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eduardo Valentin X-Patchwork-Id: 98139 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o4AAc28M006717 for ; Mon, 10 May 2010 10:38:04 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756647Ab0EJKhq (ORCPT ); Mon, 10 May 2010 06:37:46 -0400 Received: from smtp.nokia.com ([192.100.122.230]:61260 "EHLO mgw-mx03.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756594Ab0EJKg5 (ORCPT ); Mon, 10 May 2010 06:36:57 -0400 Received: from vaebh106.NOE.Nokia.com (vaebh106.europe.nokia.com [10.160.244.32]) by mgw-mx03.nokia.com (Switch-3.3.3/Switch-3.3.3) with ESMTP id o4AAZbV2003113; Mon, 10 May 2010 13:35:38 +0300 Received: from esebh102.NOE.Nokia.com ([172.21.138.183]) by vaebh106.NOE.Nokia.com with Microsoft SMTPSVC(6.0.3790.3959); Mon, 10 May 2010 13:35:36 +0300 Received: from mgw-da02.ext.nokia.com ([147.243.128.26]) by esebh102.NOE.Nokia.com over TLS secured channel with Microsoft SMTPSVC(6.0.3790.3959); Mon, 10 May 2010 13:35:35 +0300 Received: from manganga.research.nokia.com (esdhcp04199.research.nokia.com [172.21.41.99]) by mgw-da02.ext.nokia.com (Switch-3.3.3/Switch-3.3.3) with ESMTP id o4AAZPpW022644; Mon, 10 May 2010 13:35:30 +0300 From: Eduardo Valentin To: LKML , linux-arm-kernel@lists.infradead.org, Linux-OMAP Cc: Russell King , Andrew Morton , ext Tony Lindgren , ext Kevin Hilman , Peter De-Schrijver , santosh.shilimkar@ti.com, Ambresh , felipe.balbi@nokia.com, Eduardo Valentin Subject: [PATCHv4 1/4] procfs: Introduce socinfo under /proc Date: Mon, 10 May 2010 13:37:34 +0300 Message-Id: <1273487857-32281-2-git-send-email-eduardo.valentin@nokia.com> X-Mailer: git-send-email 1.7.0.4.361.g8b5fe.dirty In-Reply-To: <1273487857-32281-1-git-send-email-eduardo.valentin@nokia.com> References: <1273487857-32281-1-git-send-email-eduardo.valentin@nokia.com> X-OriginalArrivalTime: 10 May 2010 10:35:36.0259 (UTC) FILETIME=[86B31130:01CAF02C] X-Nokia-AV: Clean Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Mon, 10 May 2010 10:38:04 +0000 (UTC) diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index a4f30fa..039bcb7 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -415,6 +415,7 @@ Table 1-5: Kernel info in /proc bus Directory containing bus specific information cmdline Kernel command line cpuinfo Info about the CPU + socinfo Info about the System on Chip devices Available devices (block and character) dma Used DMS channels filesystems Supported filesystems diff --git a/fs/proc/Kconfig b/fs/proc/Kconfig index 50f8f06..e683d62 100644 --- a/fs/proc/Kconfig +++ b/fs/proc/Kconfig @@ -67,3 +67,10 @@ config PROC_PAGE_MONITOR /proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap, /proc/kpagecount, and /proc/kpageflags. Disabling these interfaces will reduce the size of the kernel by approximately 4kb. + +config PROC_SOCINFO + default y + depends on PROC_FS + bool "Enable /proc/socinfo" if EMBEDDED + help + Say Y here if you need to see information about the your System on Chip. diff --git a/fs/proc/Makefile b/fs/proc/Makefile index 11a7b5c..7757d44 100644 --- a/fs/proc/Makefile +++ b/fs/proc/Makefile @@ -26,3 +26,4 @@ proc-$(CONFIG_PROC_VMCORE) += vmcore.o proc-$(CONFIG_PROC_DEVICETREE) += proc_devtree.o proc-$(CONFIG_PRINTK) += kmsg.o proc-$(CONFIG_PROC_PAGE_MONITOR) += page.o +proc-$(CONFIG_PROC_SOCINFO) += socinfo.o diff --git a/fs/proc/socinfo.c b/fs/proc/socinfo.c new file mode 100644 index 0000000..05bfc4f --- /dev/null +++ b/fs/proc/socinfo.c @@ -0,0 +1,33 @@ +/* + * fs/proc/socinfo.c + * + * Copyright (C) 2010 Nokia Corporation + * + * Contact: Eduardo Valentin + * + * proc socinfo file + */ +#include +#include +#include +#include + +extern const struct seq_operations socinfo_op; +static int socinfo_open(struct inode *inode, struct file *file) +{ + return seq_open(file, &socinfo_op); +} + +static const struct file_operations proc_socinfo_operations = { + .open = socinfo_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + +static int __init proc_socinfo_init(void) +{ + proc_create("socinfo", 0, NULL, &proc_socinfo_operations); + return 0; +} +module_init(proc_socinfo_init);