lkml.org 
[lkml]   [2014]   [Apr]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 2/3] proc: Provide access to /proc/interrupts from kdb
    Date
    The contents of /proc/interrupts is useful to diagnose problems during
    boot up or when the system becomes unresponsive (or at least it can be if
    failure is causes by interrupt problems). This command is also seen in
    out-of-tree debug systems such as Android's FIQ debugger.

    This change allows the file to be displayed from kdb.

    Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
    ---
    fs/proc/interrupts.c | 10 ++++++++++
    1 file changed, 10 insertions(+)

    diff --git a/fs/proc/interrupts.c b/fs/proc/interrupts.c
    index a352d57..1f8eeaf 100644
    --- a/fs/proc/interrupts.c
    +++ b/fs/proc/interrupts.c
    @@ -4,6 +4,7 @@
    #include <linux/irqnr.h>
    #include <linux/proc_fs.h>
    #include <linux/seq_file.h>
    +#include <linux/kdb.h>

    /*
    * /proc/interrupts
    @@ -45,9 +46,18 @@ static const struct file_operations proc_interrupts_operations = {
    .release = seq_release,
    };

    +#ifdef CONFIG_KGDB_KDB
    +static int kdb_interrupts(int argc, const char **argv)
    +{
    + return kdb_print_seq_file(&int_seq_ops);
    +}
    +#endif
    +
    static int __init proc_interrupts_init(void)
    {
    proc_create("interrupts", 0, NULL, &proc_interrupts_operations);
    + kdb_register("interrupts", kdb_interrupts, "",
    + "Show /proc/interrupts", 3);
    return 0;
    }
    fs_initcall(proc_interrupts_init);
    --
    1.9.0


    \
     
     \ /
      Last update: 2014-04-29 19:01    [W:3.411 / U:0.012 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site