linux-kernel - Re: [PATCH v12 13/14] crypto: iaa - Add IAA Compression Accelerator stats

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Message-ID: <4f53df8e-0957-44b6-b18e-e4362800e180@wanadoo.fr>
Date:   Thu, 7 Dec 2023 07:22:12 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Tom Zanussi <tom.zanussi@...ux.intel.com>,
        herbert@...dor.apana.org.au, davem@...emloft.net,
        fenghua.yu@...el.com, vkoul@...nel.org
Cc:     dave.jiang@...el.com, tony.luck@...el.com,
        wajdi.k.feghali@...el.com, james.guilford@...el.com,
        kanchana.p.sridhar@...el.com, vinodh.gopal@...el.com,
        giovanni.cabiddu@...el.com, pavel@....cz,
        linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
        dmaengine@...r.kernel.org
Subject: Re: [PATCH v12 13/14] crypto: iaa - Add IAA Compression Accelerator
 stats

Le 05/12/2023 à 22:25, Tom Zanussi a écrit :
> Add support for optional debugfs statistics support for the IAA
> Compression Accelerator.  This is enabled by the kernel config item:
> 
>    CRYPTO_DEV_IAA_CRYPTO_STATS
> 
> When enabled, the IAA crypto driver will generate statistics which can
> be accessed at /sys/kernel/debug/iaa-crypto/.
> 
> See Documentation/driver-api/crypto/iax/iax-crypto.rst for details.
> 
> Signed-off-by: Tom Zanussi <tom.zanussi@...ux.intel.com>
> ---

> +void update_max_adecomp_delay_ns(u64 start_time_ns)
> +{
> +	u64 time_diff;
> +
> +	time_diff = ktime_get_ns() - start_time_ns;
> +
> +	if (time_diff > max_adecomp_delay_ns)
> +

Nit: unneeded NL.

> +		max_adecomp_delay_ns = time_diff;
> +}

CJ