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Date:   Wed, 13 Jan 2021 16:10:44 -0500
From:   Steven Rostedt <rostedt@goodmis.org>
To:     Alexander Potapenko <glider@google.com>
Cc:     akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
        Marco Elver <elver@google.com>,
        Andrey Konovalov <andreyknvl@gmail.com>,
        Dmitry Vyukov <dvyukov@google.com>,
        Ingo Molnar <mingo@redhat.com>, Petr Mladek <pmladek@suse.com>,
        Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
        linux-mm@kvack.org
Subject: Re: [PATCH 1/4] tracing: add error_report trace points
Message-ID: <20210113161044.43bc1c1a@gandalf.local.home>
In-Reply-To: <20210113091657.1456216-2-glider@google.com>
References: <20210113091657.1456216-1-glider@google.com>
        <20210113091657.1456216-2-glider@google.com>
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On Wed, 13 Jan 2021 10:16:54 +0100
Alexander Potapenko <glider@google.com> wrote:

> +DECLARE_EVENT_CLASS(error_report_template,
> +		    TP_PROTO(const char *error_detector, unsigned long id),

Instead of having a random string, as this should be used by a small finite
set of subsystems, why not make the above into an enum?

> +		    TP_ARGS(error_detector, id),
> +		    TP_STRUCT__entry(__field(const char *, error_detector)
> +					     __field(unsigned long, id)),
> +		    TP_fast_assign(__entry->error_detector = error_detector;
> +				   __entry->id = id;),
> +		    TP_printk("[%s] %lx", __entry->error_detector,

Then the [%s] portion of this could also be just a __print_symbolic().

-- Steve

> +			      __entry->id));
> +
> +/**