linux-kernel - Re: [PATCH] kernel/hung_task.c: printk address for hung

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Message-ID: <56970BCF.2000100@linux.vnet.ibm.com>
Date:	Thu, 14 Jan 2016 10:45:35 +0800
From:	Pan Xinhui <xinhui@...ux.vnet.ibm.com>
To:	Li <kassey1216@...il.com>, mingo@...hat.com
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kernel/hung_task.c: printk address for hung_task

hi, Li
	I have a little confusion. for what you want to know this ptr's value. Can that help you debug or root the cause?
I'm just wondering :)

thanks
xinhui

On 2016年01月13日 10:42, Li wrote:
> From: Kassey Li <kassey1216@...il.com>
> 
> this is used to check task_struct info when got a dump.
> 
> Signed-off-by: Kassey Li <kassey1216@...il.com>
> ---
>  kernel/hung_task.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/kernel/hung_task.c b/kernel/hung_task.c
> index d234022..b5dd7dd 100644
> --- a/kernel/hung_task.c
> +++ b/kernel/hung_task.c
> @@ -108,8 +108,8 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout)
>  	 * Ok, the task did not get scheduled for more than 2 minutes,
>  	 * complain:
>  	 */
> -	pr_err("INFO: task %s:%d blocked for more than %ld seconds.\n",
> -		t->comm, t->pid, timeout);
> +	pr_err("INFO: task %s:%d 0x%p blocked for more than %ld seconds.\n",
> +		t->comm, t->pid, t, timeout);
>  	pr_err("      %s %s %.*s\n",
>  		print_tainted(), init_utsname()->release,
>  		(int)strcspn(init_utsname()->version, " "),
>