From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: Dan Raymond <draymond@foxvalley.net>
Cc: linux-serial@vger.kernel.org, gregkh@linuxfoundation.org,
ilpo.jarvinen@linux.intel.com
Subject: Re: [PATCH v3] tty/serial: create debugfs interface for UART register tracing
Date: Thu, 31 Aug 2023 21:08:31 +0300 [thread overview]
Message-ID: <ZPDXHy6L7nTRx63l@smile.fi.intel.com> (raw)
In-Reply-To: <eb8a598c-414e-aecf-e903-e2c01db1979a@foxvalley.net>
On Thu, Aug 24, 2023 at 02:59:01PM -0600, Dan Raymond wrote:
> Implement a UART register tracing facility using the debugfs. This can be
> used as a "serial port sniffer" to monitor UART traffic and line settings
> with timestamps at microsecond granularity. This can be useful for general
> serial port debugging or to debug the UART driver itself.
> drivers/tty/serial/8250/8250_debug.c | 530 +++++++++++++++++++++++++++
My gosh. Why trace points and trace events can't be used for that?
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2023-08-31 18:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-24 20:59 [PATCH v3] tty/serial: create debugfs interface for UART register tracing Dan Raymond
2023-08-25 8:06 ` Greg KH
2023-09-13 5:59 ` Dan Raymond
2023-08-31 18:08 ` Andy Shevchenko [this message]
2023-08-31 18:33 ` Dan Raymond
2023-08-31 18:58 ` Greg KH
2023-08-31 22:59 ` Andy Shevchenko
2023-09-11 22:14 ` Dan Raymond
2023-09-11 22:53 ` Andy Shevchenko
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