[PATCH 0/3 v11] printk: Add new timestamps

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From	Prarit Bhargava <prarit@redhat.com>
Newsgroups	linux.kernel
Subject	[PATCH 0/3 v11] printk: Add new timestamps
Date	Tue, 05 Sep 2017 14:10:02 +0200
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X-Original-Cc	Prarit Bhargava <prarit@redhat.com>, 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
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printk.time=1/CONFIG_PRINTK_TIME=1 adds a unmodified local hardware clock
timestamp to printk messages.  The local hardware clock loses time each
day making it difficult to determine exactly when an issue has occurred in
the kernel log, and making it difficult to determine how kernel and
hardware issues relate to each other in real time.

Add monotonic, boottime, and real clock timestamps in addition to the existing
local hardware clock timestamp.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Mark Salyzyn <salyzyn@android.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Christoffer Dall <cdall@linaro.org>
Cc: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: "Luis R. Rodriguez" <mcgrof@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: linux-doc@vger.kernel.org
[jstultz: reworked Kconfig settings to avoid defconfig noise]
Signed-off-by: John Stultz <john.stultz@linaro.org>

Prarit Bhargava (2):
  time: Make fast functions return 0 before timekeeping is initialized
  printk: Add monotonic, boottime, and realtime timestamps

Thomas Gleixner (1):
  timekeeping: Provide NMI safe access to clock realtime

 Documentation/admin-guide/kernel-parameters.txt |   6 +-
 include/linux/timekeeper_internal.h             |   6 +-
 include/linux/timekeeping.h                     |   1 +
 kernel/printk/printk.c                          | 113 ++++++++++++++++++++++--
 kernel/time/timekeeping.c                       |  72 +++++++++++++--
 lib/Kconfig.debug                               |  48 +++++++++-
 6 files changed, 228 insertions(+), 18 deletions(-)

-- 
1.8.5.5

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[PATCH 0/3 v11] printk: Add new timestamps Prarit Bhargava <prarit@redhat.com> - 2017-09-05 14:10 +0200
  [PATCH 2/3 v11] timekeeping: Provide NMI safe access to clock realtime Prarit Bhargava <prarit@redhat.com> - 2017-09-05 14:10 +0200
  [PATCH 1/3 v11] time: Make fast functions return 0 before timekeeping is initialized Prarit Bhargava <prarit@redhat.com> - 2017-09-05 14:10 +0200
    Re: [PATCH 1/3 v11] time: Make fast functions return 0 before  timekeeping is initialized Thomas Gleixner <tglx@linutronix.de> - 2017-09-05 14:20 +0200

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