From: Andrew Morton <akpm@linux-foundation.org>
To: Baoquan He <bhe@redhat.com>
Cc: linux-kernel@vger.kernel.org, kexec@lists.infradead.org,
takahiro.akashi@linaro.org, ebiederm@xmission.com,
vgoyal@redhat.com, dyoung@redhat.com, prudo@linux.vnet.ibm.com
Subject: Re: [PATCH 1/2] resource: add walk_system_ram_res_rev()
Date: Thu, 22 Mar 2018 19:06:06 -0700 [thread overview]
Message-ID: <20180322190606.859a0f1c7e2d1b2958daeb9f@linux-foundation.org> (raw)
In-Reply-To: <20180323005845.GA25740@localhost.localdomain>
On Fri, 23 Mar 2018 08:58:45 +0800 Baoquan He <bhe@redhat.com> wrote:
> > erk, this is pretty nasty. Isn't there a better way :(
>
> Yes, this is not efficient.
>
> In struct resource{}, ->sibling list is a singly linked list. I ever
> thought about changing it to doubly linked list, yet not very sure if
> it will have effect since struct resource is a core data structure.
Switching to a list_head sounds OK. The only issue really is memory
consumption and surely we don't have tens of thousands of struct
resources floating about(?). Or if we do have a lot, the machine is
presumably huge (hope?).
> AKASHI's method is more acceptable, and currently only kexec has this
> requirement.
What method is that?
next prev parent reply other threads:[~2018-03-23 2:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-22 3:37 [PATCH 0/2] Kexec_file: Load kernel at top of system ram Baoquan He
2018-03-22 3:37 ` [PATCH 1/2] resource: add walk_system_ram_res_rev() Baoquan He
2018-03-22 22:29 ` Andrew Morton
2018-03-23 0:58 ` Baoquan He
2018-03-23 2:06 ` Andrew Morton [this message]
2018-03-23 3:10 ` Baoquan He
2018-03-23 20:06 ` Andrew Morton
2018-03-24 13:33 ` Baoquan He
2018-03-24 16:13 ` Wei Yang
2018-03-26 14:30 ` Baoquan He
2018-03-26 15:04 ` Wei Yang
2018-03-22 3:37 ` [PATCH 2/2] kexec_file: Load kernel at top of system RAM if required Baoquan He
2018-03-22 22:38 ` [PATCH 0/2] Kexec_file: Load kernel at top of system ram Andrew Morton
2018-03-23 8:38 ` Baoquan He
2023-11-14 9:16 [PATCH 0/2] kexec_file: Load kernel at top of system RAM if required Baoquan He
2023-11-14 9:16 ` [PATCH 1/2] resource: add walk_system_ram_res_rev() Baoquan He
2023-11-14 23:17 ` Andrew Morton
2023-11-15 0:40 ` Baoquan He
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