On Thu, 04 Oct 2007 20:38:50 +0900 Takenori Nagano wrote:
> This patch implements new notifier function to panic_notifier_list. We can
> change the list of order by debugfs.
>
> Thanks,
>
> ---
>
> Signed-off-by: Takenori Nagano <[email protected]>
>
> ---
...
> diff -uprN linux-2.6.23-rc9.orig/kernel/softlockup.c
> linux-2.6.23-rc9/kernel/softlockup.c
> --- linux-2.6.23-rc9.orig/kernel/softlockup.c 2007-10-02 12:24:52.000000000 +0900
> +++ linux-2.6.23-rc9/kernel/softlockup.c 2007-10-04 09:46:25.784000000 +0900
> @@ -31,10 +31,18 @@ softlock_panic(struct notifier_block *th
> return NOTIFY_DONE;
> }
>
> -static struct notifier_block panic_block = {
> +static struct notifier_block panic_block_base = {
> .notifier_call = softlock_panic,
> };
>
> +static struct tunable_notifier_block panic_block = {
> + .nb = &panic_block_base,
> + .head = NULL,
> + .dir = NULL,
> + .pri_dentry = NULL,
> + .desc_dentry = NULL
> +};
> +
> /*
> * Returns seconds, approximately. We don't need nanosecond
> * resolution, and we don't need to waste time with a big divide when
> @@ -193,5 +201,6 @@ __init void spawn_softlockup_task(void)
> cpu_callback(&cpu_nfb, CPU_ONLINE, cpu);
> register_cpu_notifier(&cpu_nfb);
>
> - atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
> + tunable_notifier_chain_register(&panic_notifier_list, &panic_block,
> + "softlookup", NULL);
> }
"softlockup"
---
~Randy
-
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