linux-kernel - Re: [PATCH] of: add early boot allocation of of_find_node_by

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Message-ID: <96984f12-dff6-73e9-8f45-9573cb9ca4e5@gmail.com>
Date:   Wed, 14 Feb 2018 16:55:20 -0800
From:   Frank Rowand <frowand.list@...il.com>
To:     Rob Herring <robh+dt@...nel.org>, cpandya@...eaurora.org
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] of: add early boot allocation of
 of_find_node_by_phandle() cache

On 02/14/18 16:44, frowand.list@...il.com wrote:
> From: Frank Rowand <frank.rowand@...y.com>
> 
> The initial implementation of the of_find_node_by_phandle() cache
> allocates the cache using kcalloc().  Add an early boot allocation
> of the cache so it will be usable during early boot.  Switch over
> to the kcalloc() based cache once normal memory allocation
> becomes available.
> 
> Signed-off-by: Frank Rowand <frank.rowand@...y.com>
> ---
> 
> This patch is optional, to be added at Rob's discretion.  The
> extra complexity is not as much as I had feared, but the boot
> speed up is also likely small.

This patch applies on top of:

[PATCH v3] of: cache phandle nodes to reduce cost of of_find_node_by_phandle()