linux-kernel - Re: [PATCH 1/2] params: Add a per cpu module param type

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Date:	Wed, 20 Aug 2014 03:37:48 +0930
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org
Cc:	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 1/2] params: Add a per cpu module param type

Andi Kleen <andi@...stfloor.org> writes:
> From: Andi Kleen <ak@...ux.intel.com>
>
> This is mainly useful for simple statistic counters.
> Essentially read-only, writing only clears.

Nice...

> +#define param_check_percpu_uint(name, p) param_check_uint

This is wrong; will it even compile?  It should also do the __percpu
annotation so hopefully sparse will catch any misuses, eg:

#define param_check_percpu_uint(name, p) \
        __param_check(name, p, __percpu unsigned int)

The rest looks good, but I'll need a user :)

Cheers,
Rusty.
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