linux-kernel - Re: [PATCH] libnvdimm, test: add mock SMART data payload

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Date:	Thu, 07 Apr 2016 10:27:54 +0200
From:	Johannes Thumshirn <jthumshirn@...e.de>
To:	linux-nvdimm@...ts.01.org
Cc:	Dan Williams <dan.j.williams@...el.com>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] libnvdimm, test: add mock SMART data payload

On Mittwoch, 6. April 2016 17:53:49 CEST Dan Williams wrote:
> Provide simulated SMART data to enable the ndctl implementation of SMART
> data retrieval and parsing.
> 
> The payload is defined here, "Section 4.1 SMART and Health Info
> (Function Index 1)":
> 
>     http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf
> 
> Signed-off-by: Dan Williams <dan.j.williams@...el.com>
> ---

[...]

> @@ -20,6 +20,35 @@ struct nd_cmd_smart {
>  	__u8 data[128];
>  } __packed;
> 
> +enum {
> +	ND_SMART_HEALTH_VALID	= 1 << 0,
> +	ND_SMART_TEMP_VALID 	= 1 << 1,
> +	ND_SMART_SPARES_VALID	= 1 << 2,
> +	ND_SMART_ALARM_VALID	= 1 << 3,
> +	ND_SMART_USED_VALID	= 1 << 4,
> +	ND_SMART_SHUTDOWN_VALID	= 1 << 5,
> +	ND_SMART_VENDOR_VALID	= 1 << 6,
> +	ND_SMART_TEMP_TRIP	= 1 << 0,
> +	ND_SMART_SPARE_TRIP	= 1 << 1,
> +	ND_SMART_NON_CRITICAL_HEALTH	= 1 << 0,
> +	ND_SMART_CRITICAL_HEALTH	= 1 << 1,
> +	ND_SMART_FATAL_HEALTH		= 1 << 2,
> +};

Why not use BIT() instead of that 1 << x stuff and #define instead of the 
abstract enum?

-- 
Johannes Thumshirn                                          Storage
jthumshirn@...e.de                                +49 911 74053 689
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