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Date: Mon, 9 Dec 2019 16:42:50 +0900
From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Subject: Re: [RFC PATCH v5 1/3] printk-rb: new printk ringbuffer
 implementation (writer)
Message-ID: <20191209074249.GC88619@google.com>
References: <20191128015235.12940-1-john.ogness@linutronix.de>
 <20191128015235.12940-2-john.ogness@linutronix.de>
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To: John Ogness <john.ogness@linutronix.de>
Cc: Andrea Parri <andrea.parri@amarulasolutions.com>, Petr Mladek <pmladek@suse.com>, Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>, Peter Zijlstra <peterz@infradead.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Brendan Higgins <brendanhiggins@google.com>, linux-kernel@vger.kernel.org, Steven Rostedt <rostedt@goodmis.org>, Sergey Senozhatsky <sergey.senozhatsky@gmail.com>, Thomas Gleixner <tglx@linutronix.de>, Linus Torvalds <torvalds@linux-foundation.org>, kexec@lists.infradead.org

On (19/11/28 02:58), John Ogness wrote:
[..]
> +
> +#define _DATA_SIZE(sz_bits)		(1UL << (sz_bits))
> +#define _DESCS_COUNT(ct_bits)		(1U << (ct_bits))
> +#define DESC_SV_BITS			(sizeof(int) * 8)
> +#define DESC_COMMITTED_MASK		(1U << (DESC_SV_BITS - 1))

What does SV state for? State Value?

	-ss

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