[PATCHv4,1/4] procfs: Introduce socinfo under /proc

Commit Message

Eduardo Valentin May 10, 2010, 10:37 a.m. UTC

None

Patch

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 <[e-mail]>
+ *
+ *  proc socinfo file
+ */
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+
+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);