From: Eduardo Valentin <eduardo.valentin@xxxxxxxxx> This patch introduce the /proc/socinfo node. Its purpose is to export System on Chip information and specific bits. The way it is done is basically same structure which is used to build /proc/cpuinfo. Thus, it relies on the existence of socinfo_op seq_operation structure. This structure must be provided by soc core code. Signed-off-by: Eduardo Valentin <eduardo.valentin@xxxxxxxxx> --- Documentation/filesystems/proc.txt | 1 + fs/proc/Kconfig | 7 +++++++ fs/proc/Makefile | 1 + fs/proc/socinfo.c | 33 +++++++++++++++++++++++++++++++++ 4 files changed, 42 insertions(+), 0 deletions(-) create mode 100644 fs/proc/socinfo.c 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 <eduardo.valentin@xxxxxxxxx> + * + * 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); -- 1.7.0.4.361.g8b5fe.dirty -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html