lkml.org 
[lkml]   [2010]   [May]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCHv4 1/4] procfs: Introduce socinfo under /proc
    Date
    From: Eduardo Valentin <eduardo.valentin@nokia.com>

    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@nokia.com>
    ---
    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@nokia.com>
    + *
    + * 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


    \
     
     \ /
      Last update: 2010-05-10 12:39    [W:0.023 / U:34.472 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site