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Message-ID: <20200609110901.GZ19604@bombadil.infradead.org>
Date:   Tue, 9 Jun 2020 04:09:01 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Stanimir Varbanov <stanimir.varbanov@...aro.org>
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-btrfs@...r.kernel.org, linux-acpi@...r.kernel.org,
        netdev@...r.kernel.org, Joe Perches <joe@...ches.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jason Baron <jbaron@...mai.com>,
        Jonathan Corbet <corbet@....net>
Subject: Re: [PATCH v3 1/7] Documentation: dynamic-debug: Add description of
 level bitmask

On Tue, Jun 09, 2020 at 01:45:58PM +0300, Stanimir Varbanov wrote:
> +level
> +    The given level will be a bitmask ANDed with the level of the each ``pr_debug()``
> +    callsite. This will allow to group debug messages and show only those of the
> +    same level.  The -p flag takes precedence over the given level. Note that we can
> +    have up to five groups of debug messages.

That doesn't sound like a "level".  printk has levels.  If you ask for
"level 3" messages, you get messages from levels 0, 1, 2, and 3.  These
seem like "types" or "groups" or something.

> +  // enable all messages in file with 0x01 level bitmask
> +  nullarbor:~ # echo -n 'file foo.c level 0x01 +p' >
> +                                <debugfs>/dynamic_debug/control

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