Re: [PATCH v5 4/8] arm64: parse cpu capacity-dmips-mhz from DT

From: Mark Brown
Date: Wed Jun 15 2016 - 09:50:01 EST


On Wed, Jun 15, 2016 at 11:17:53AM +0100, Juri Lelli wrote:

> + if (!raw_capacity) {
> + raw_capacity = kzalloc(sizeof(*raw_capacity) *
> + num_possible_cpus(), GFP_KERNEL);

kcalloc()?

> + if (!raw_capacity) {
> + pr_err("cpu_capacity: failed to allocate memory"
> + " for raw capacities\n");

It's normally better to avoid splitting errors message so people can
grep if they see the error.

> + } else {
> + pr_err("cpu_capacity: missing %s raw capacity "
> + "(fallback to 1024 for all CPUs)\n",
> + cpu_node->full_name);

That's going to complain fairly loudly for all existing DTs isn't it and
it's kind of redundant if all the cores have the same capacity (which is
a very common case)? How about printing an error only if we already
found one, or printing a single warning at the end if we didn't get
anything?

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