From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Prarit Bhargava <prarit@redhat.com>
Cc: linux-kernel@vger.kernel.org, Mark Salyzyn <salyzyn@android.com>,
Jonathan Corbet <corbet@lwn.net>, Petr Mladek <pmladek@suse.com>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
John Stultz <john.stultz@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Stephen Boyd <sboyd@codeaurora.org>,
Andrew Morton <akpm@linux-foundation.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Christoffer Dall <cdall@linaro.org>,
Deepa Dinamani <deepa.kernel@gmail.com>,
Ingo Molnar <mingo@kernel.org>,
Joel Fernandes <joelaf@google.com>,
Kees Cook <keescook@chromium.org>,
Peter Zijlstra <peterz@infradead.org>,
Geert Uytterhoeven <geert+renesas@glider.be>,
"Luis R. Rodriguez" <mcgrof@kernel.org>,
Nicholas Piggin <npiggin@gmail.com>,
"Jason A. Donenfeld" <Jason@zx2c4.com>,
Olof Johansson <olof@lixom.net>,
Josh Poimboeuf <jpoimboe@redhat.com>,
linux-doc@vger.kernel.org
Subject: Re: [PATCH 2/2 v8] printk: Add monotonic, boottime, and realtime timestamps
Date: Fri, 25 Aug 2017 13:52:54 +0900 [thread overview]
Message-ID: <20170825045254.GA5876@jagdpanzerIV.localdomain> (raw)
In-Reply-To: <1503582122-22841-3-git-send-email-prarit@redhat.com>
On (08/24/17 09:42), Prarit Bhargava wrote:
[..]
> +config PRINTK_TIME_DEBUG
> + bool "Allow runtime reselection of any timebase on printks"
> + depends on PRINTK
> + default N
> + help
> + Selecting this option causes time stamps of the printk()
> + messages to be changed freely at runtime on the output of
> + the syslog() system call and at the console. Without this
> + option, one can only enable or disable the configuration
> + selected timebase.
> +
> + Runtime adjustment can be set via
> + /sys/module/printk/paramters/time as follows with a string:
s/paramters/parameters/
> + 0/N/n/disable, 1/Y/y/local, b/boot, m/monotonic, r/realtime.
> + eg: echo local >/sys/module/printk/parameters/time
> + echo realtime >/sys/module/printk/parameters/time
-ss
prev parent reply other threads:[~2017-08-25 4:52 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-24 13:42 [PATCH 0/2 v8] printk: Add new timestamps Prarit Bhargava
2017-08-24 13:42 ` [PATCH 1/2 v8] time: Make fast functions return 0 before timekeeping is initialized Prarit Bhargava
2017-08-24 13:42 ` [PATCH 2/2 v8] printk: Add monotonic, boottime, and realtime timestamps Prarit Bhargava
2017-08-24 18:50 ` John Stultz
2017-08-25 14:46 ` Prarit Bhargava
2017-08-25 14:58 ` Steven Rostedt
2017-08-25 4:52 ` Sergey Senozhatsky [this message]
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