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From: Steven Rostedt <rostedt@goodmis.org>
To: Alexander Potapenko <glider@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	LKML <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 Memory Management List <linux-mm@kvack.org>
Subject: Re: [PATCH 1/4] tracing: add error_report trace points
Date: Thu, 14 Jan 2021 09:52:32 -0500	[thread overview]
Message-ID: <20210114095232.7ba3f9a8@gandalf.local.home> (raw)
In-Reply-To: <CAG_fn=XSkOChCwBp=Vg6jWhZ8K44seCo=0Zu38iUpAj6eCUxjQ@mail.gmail.com>

On Thu, 14 Jan 2021 08:49:57 +0100
Alexander Potapenko <glider@google.com> wrote:

> We'll need to explicitly list the enum values once again in
> __print_symbolic(), right? E.g.:
> 
> enum debugging_tool {
>          TOOL_KFENCE,
>          TOOL_KASAN,
>          ...
> }
> 
> TP_printk(__print_symbolic(__entry->error_detector, TOOL_KFENCE,
> TOOL_KASAN, ...),

Usually what is done is to make this into a macro:

#define REPORT_TOOL_LIST \
  EM(KFENCE, kfence) \
  EMe(KASAN, kasan)

#undef EM
#undef EMe

#define EM(a,b) TRACE_DEFINE_ENUM(a)
#define EMe(a,b) TRACE_DEFINE_ENUM(a)

REPORT_TOOL_LIST

#undef EM
#undef EMe

#define EM(a, b) { a, b },
#define EMe(a, b) { a, b }

#define show_report_tool_list(val) \
	__print_symbolic(val, REPORT_TOOL_LIST)


[..]

 TP_printk("[%s] %lx", show_report_tool_list(__entry->error_detector),
    __entry->id)


This is done in several other trace event files.  For example, see
  include/trace/events/sock.h


-- Steve

  parent reply	other threads:[~2021-01-14 14:53 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-13  9:16 [PATCH 0/4] Add sysfs interface to collect reports from debugging tools Alexander Potapenko
2021-01-13  9:16 ` [PATCH 1/4] tracing: add error_report trace points Alexander Potapenko
2021-01-13  9:16   ` Alexander Potapenko
2021-01-13 21:10   ` Steven Rostedt
2021-01-14  7:49     ` Alexander Potapenko
2021-01-14  7:49       ` Alexander Potapenko
2021-01-14  8:59       ` Marco Elver
2021-01-14  8:59         ` Marco Elver
2021-01-14 14:52       ` Steven Rostedt [this message]
2021-01-15 12:53         ` Alexander Potapenko
2021-01-15 12:53           ` Alexander Potapenko
2021-01-15 16:17           ` Steven Rostedt
2021-01-13  9:16 ` [PATCH 2/4] lib: add error_report_notify to collect debugging tools' reports Alexander Potapenko
2021-01-13  9:16   ` Alexander Potapenko
2021-01-14  0:06   ` Andrew Morton
2021-01-14  9:51     ` Alexander Potapenko
2021-01-14  9:51       ` Alexander Potapenko
2021-01-15 10:18       ` Alexander Potapenko
2021-01-15 10:18         ` Alexander Potapenko
2021-01-13  9:16 ` [PATCH 3/4] kfence: use error_report_start and error_report_end tracepoints Alexander Potapenko
2021-01-13  9:16   ` Alexander Potapenko
2021-01-13  9:16 ` [PATCH 4/4] kasan: " Alexander Potapenko
2021-01-13  9:16   ` Alexander Potapenko
     [not found] <20210113091017.1444780-1-glider@google.com>
2021-01-13  9:10 ` [PATCH 1/4] tracing: add error_report trace points Alexander Potapenko

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