linux-kernel - Re: [PATCH] scripts/gdb: Add command to check list consistency

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Date:	Thu, 23 Apr 2015 14:20:03 +0200
From:	Jan Kiszka <jan.kiszka@...mens.com>
To:	Thiébaud Weksteen <thiebaud@...steen.fr>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scripts/gdb: Add command to check list consistency

On 2015-04-23 14:10, Jan Kiszka wrote:
> On 2015-04-22 09:32, Thiébaud Weksteen wrote:
>> +    nb = 0
>> +    list_head_ptr_type = list_head.get_type().pointer()
>> +    c = head.cast(list_head_ptr_type)
> 
> Why casting? Is it a common use case to not have the list head as a
> variable at hand? The user could still do
> 
> lx_list_check (struct list_head *)0x...
> 
> when needed.

Specifically, this fails in a non-obvious way right now:

(gdb) lx-check-list workqueues

If you look at lx_thread_info, e.g., it accepts both objects and pointers.

Jan

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