[patch 00/3] time: Cleanup license information

[patch 00/3] time: Cleanup license information

[Thomas Gleixner]

The following patch series cleans up the licensing information in the
time subsystem.

  * Replace boiler plate language and sloppy references with SPDX

  * Add missing SPDX identifiers to files with no license reference

While at it clean up the top of file comments by removing pointless
references to the filename itself and condense the information where
appropriate.

Thanks,

        tglx
---
 include/linux/hrtimer.h         |    5 +----
 kernel/time/alarmtimer.c        |    5 +----
 kernel/time/clockevents.c       |    6 +-----
 kernel/time/clocksource.c       |   20 +-------------------
 kernel/time/hrtimer.c           |   17 ++++-------------
 kernel/time/jiffies.c           |   28 ++++++----------------------
 kernel/time/posix-clock.c       |   17 ++---------------
 kernel/time/posix-stubs.c       |    5 +----
 kernel/time/posix-timers.c      |   25 ++-----------------------
 kernel/time/sched_clock.c       |    9 +++------
 kernel/time/test_udelay.c       |   10 +---------
 kernel/time/tick-broadcast.c    |    6 +-----
 kernel/time/tick-common.c       |    6 +-----
 kernel/time/tick-oneshot.c      |    6 +-----
 kernel/time/tick-sched.c        |    5 +----
 kernel/time/time.c              |   13 +++++--------
 kernel/time/timeconst.bc        |    2 ++
 kernel/time/timeconv.c          |   18 +-----------------
 kernel/time/timecounter.c       |   16 ++--------------
 kernel/time/timekeeping.c       |    8 +++-----
 kernel/time/timekeeping_debug.c |   11 +----------
 kernel/time/timer.c             |    3 +--
 kernel/time/timer_list.c        |    7 +------
 23 files changed, 43 insertions(+), 205 deletions(-)

[patch 01/3] time: Remove useless filenames in top level comments

[Thomas Gleixner]

[-- Attachment #1: time--Remove-useless-filenames-in-top-level-comments.patch --]
[-- Type: text/plain, Size: 7230 bytes --]

Remove the pointless filenames in the top level comments. They have no
value at all and just occupy space. While at it tidy up some of the
comments.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 include/linux/hrtimer.h      |    2 --
 kernel/time/clockevents.c    |    2 --
 kernel/time/clocksource.c    |    5 -----
 kernel/time/hrtimer.c        |   14 +++-----------
 kernel/time/jiffies.c        |    2 --
 kernel/time/posix-clock.c    |    2 +-
 kernel/time/posix-timers.c   |    4 ----
 kernel/time/sched_clock.c    |    4 ++--
 kernel/time/tick-broadcast.c |    2 --
 kernel/time/tick-common.c    |    2 --
 kernel/time/tick-oneshot.c   |    2 --
 kernel/time/tick-sched.c     |    2 --
 kernel/time/time.c           |   12 ++++--------
 kernel/time/timecounter.c    |    5 +----
 kernel/time/timekeeping.c    |    7 ++-----
 kernel/time/timer.c          |    2 --
 kernel/time/timer_list.c     |    2 --
 17 files changed, 13 insertions(+), 58 deletions(-)

--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -1,6 +1,4 @@
 /*
- *  include/linux/hrtimer.h
- *
  *  hrtimers - High-resolution kernel timers
  *
  *   Copyright(C) 2005, Thomas Gleixner <tglx@linutronix.de>
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -1,6 +1,4 @@
 /*
- * linux/kernel/time/clockevents.c
- *
  * This file contains functions which manage clock event devices.
  *
  * Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -1,6 +1,4 @@
 /*
- * linux/kernel/time/clocksource.c
- *
  * This file contains the functions which manage clocksource drivers.
  *
  * Copyright (C) 2004, 2005 IBM, John Stultz (johnstul@us.ibm.com)
@@ -18,9 +16,6 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * TODO WishList:
- *   o Allow clocksource drivers to be unregistered
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -1,21 +1,13 @@
 /*
- *  linux/kernel/hrtimer.c
- *
  *  Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
  *  Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
  *  Copyright(C) 2006-2007  Timesys Corp., Thomas Gleixner
  *
  *  High-resolution kernel timers
  *
- *  In contrast to the low-resolution timeout API implemented in
- *  kernel/timer.c, hrtimers provide finer resolution and accuracy
- *  depending on system configuration and capabilities.
- *
- *  These timers are currently used for:
- *   - itimers
- *   - POSIX timers
- *   - nanosleep
- *   - precise in-kernel timing
+ *  In contrast to the low-resolution timeout API, aka timer wheel,
+ *  hrtimers provide finer resolution and accuracy depending on system
+ *  configuration and capabilities.
  *
  *  Started by: Thomas Gleixner and Ingo Molnar
  *
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -1,6 +1,4 @@
 /***********************************************************************
-* linux/kernel/time/jiffies.c
-*
 * This file contains the jiffies based clocksource.
 *
 * Copyright (C) 2004, 2005 IBM, John Stultz (johnstul@us.ibm.com)
--- a/kernel/time/posix-clock.c
+++ b/kernel/time/posix-clock.c
@@ -1,5 +1,5 @@
 /*
- * posix-clock.c - support for dynamic clock devices
+ * Support for dynamic clock devices
  *
  * Copyright (C) 2010 OMICRON electronics GmbH
  *
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -1,10 +1,6 @@
 /*
- * linux/kernel/posix-timers.c
- *
- *
  * 2002-10-15  Posix Clocks & timers
  *                           by George Anzinger george@mvista.com
- *
  *			     Copyright (C) 2002 2003 by MontaVista Software.
  *
  * 2004-06-01  Fix CLOCK_REALTIME clock/timer TIMER_ABSTIME bug.
--- a/kernel/time/sched_clock.c
+++ b/kernel/time/sched_clock.c
@@ -1,6 +1,6 @@
 /*
- * sched_clock.c: Generic sched_clock() support, to extend low level
- *                hardware time counters to full 64-bit ns values.
+ * Generic sched_clock() support, to extend low level hardware time
+ * counters to full 64-bit ns values.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -1,6 +1,4 @@
 /*
- * linux/kernel/time/tick-broadcast.c
- *
  * This file contains functions which emulate a local clock-event
  * device via a broadcast event source.
  *
--- a/kernel/time/tick-common.c
+++ b/kernel/time/tick-common.c
@@ -1,6 +1,4 @@
 /*
- * linux/kernel/time/tick-common.c
- *
  * This file contains the base functions to manage periodic tick
  * related events.
  *
--- a/kernel/time/tick-oneshot.c
+++ b/kernel/time/tick-oneshot.c
@@ -1,6 +1,4 @@
 /*
- * linux/kernel/time/tick-oneshot.c
- *
  * This file contains functions which manage high resolution tick
  * related events.
  *
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -1,6 +1,4 @@
 /*
- *  linux/kernel/time/tick-sched.c
- *
  *  Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
  *  Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
  *  Copyright(C) 2006-2007  Timesys Corp., Thomas Gleixner
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -1,14 +1,10 @@
 /*
- *  linux/kernel/time.c
- *
  *  Copyright (C) 1991, 1992  Linus Torvalds
  *
- *  This file contains the interface functions for the various
- *  time related system calls: time, stime, gettimeofday, settimeofday,
- *			       adjtime
- */
-/*
- * Modification history kernel/time.c
+ *  This file contains the interface functions for the various time related
+ *  system calls: time, stime, gettimeofday, settimeofday, adjtime
+ *
+ * Modification history:
  *
  * 1993-09-02    Philip Gladstone
  *      Created file with time related functions from sched/core.c and adjtimex()
--- a/kernel/time/timecounter.c
+++ b/kernel/time/timecounter.c
@@ -1,8 +1,5 @@
 /*
- * linux/kernel/time/timecounter.c
- *
- * based on code that migrated away from
- * linux/kernel/time/clocksource.c
+ * based on code that migrated away from linux/kernel/time/clocksource.c
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1,11 +1,8 @@
 /*
- *  linux/kernel/time/timekeeping.c
- *
  *  Kernel timekeeping code and accessor functions
  *
- *  This code was moved from linux/kernel/timer.c.
- *  Please see that file for copyright and history logs.
- *
+ *  This code was moved from linux/kernel/timer.c. Please see that file for
+ *  copyright and history logs.
  */
 
 #include <linux/timekeeper_internal.h>
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1,6 +1,4 @@
 /*
- *  linux/kernel/timer.c
- *
  *  Kernel internal timers
  *
  *  Copyright (C) 1991, 1992  Linus Torvalds
--- a/kernel/time/timer_list.c
+++ b/kernel/time/timer_list.c
@@ -1,6 +1,4 @@
 /*
- * kernel/time/timer_list.c
- *
  * List pending timers
  *
  * Copyright(C) 2006, Red Hat, Inc., Ingo Molnar

[patch 02/3] time: Add SPDX license identifiers

[Thomas Gleixner]

[-- Attachment #1: time--Add-SPDX-license-identifiers.patch --]
[-- Type: text/plain, Size: 6234 bytes --]

Update the time(r) core files files with the correct SPDX license
identifier based on the license text in the file itself. The SPDX
identifier is a legally binding shorthand, which can be used instead of the
full boiler plate text.

This work is based on a script and data from Philippe Ombredanne, Kate
Stewart and myself. The data has been created with two independent license
scanners and manual inspection.

The following files do not contain any direct license information and have
been omitted from the big initial SPDX changes:

  timeconst.bc: The .bc files were not touched
  time.c, timer.c, timekeeping.c: Licence was deduced from EXPORT_SYMBOL_GPL

As those files do not contain direct license references they fall under the
project license, i.e. GPL V2 only.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 include/linux/hrtimer.h         |    1 +
 kernel/time/alarmtimer.c        |    1 +
 kernel/time/clockevents.c       |    1 +
 kernel/time/clocksource.c       |    1 +
 kernel/time/hrtimer.c           |    1 +
 kernel/time/jiffies.c           |    1 +
 kernel/time/posix-clock.c       |    1 +
 kernel/time/posix-stubs.c       |    1 +
 kernel/time/posix-timers.c      |    1 +
 kernel/time/sched_clock.c       |    1 +
 kernel/time/test_udelay.c       |    1 +
 kernel/time/tick-broadcast.c    |    1 +
 kernel/time/tick-common.c       |    1 +
 kernel/time/tick-oneshot.c      |    1 +
 kernel/time/tick-sched.c        |    1 +
 kernel/time/time.c              |    1 +
 kernel/time/timeconst.bc        |    2 ++
 kernel/time/timeconv.c          |    1 +
 kernel/time/timecounter.c       |    1 +
 kernel/time/timekeeping.c       |    1 +
 kernel/time/timekeeping_debug.c |    1 +
 kernel/time/timer.c             |    1 +
 kernel/time/timer_list.c        |    1 +
 23 files changed, 24 insertions(+)

--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL2.0 */
 /*
  *  hrtimers - High-resolution kernel timers
  *
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  * Alarmtimer interface
  *
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  * This file contains functions which manage clock event devices.
  *
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0+
 /*
  * This file contains the functions which manage clocksource drivers.
  *
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  *  Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
  *  Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0+
 /***********************************************************************
 * This file contains the jiffies based clocksource.
 *
--- a/kernel/time/posix-clock.c
+++ b/kernel/time/posix-clock.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0+
 /*
  * Support for dynamic clock devices
  *
--- a/kernel/time/posix-stubs.c
+++ b/kernel/time/posix-stubs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  * Dummy stubs used when CONFIG_POSIX_TIMERS=n
  *
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0+
 /*
  * 2002-10-15  Posix Clocks & timers
  *                           by George Anzinger george@mvista.com
--- a/kernel/time/sched_clock.c
+++ b/kernel/time/sched_clock.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  * Generic sched_clock() support, to extend low level hardware time
  * counters to full 64-bit ns values.
--- a/kernel/time/test_udelay.c
+++ b/kernel/time/test_udelay.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  * udelay() test kernel module
  *
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  * This file contains functions which emulate a local clock-event
  * device via a broadcast event source.
--- a/kernel/time/tick-common.c
+++ b/kernel/time/tick-common.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  * This file contains the base functions to manage periodic tick
  * related events.
--- a/kernel/time/tick-oneshot.c
+++ b/kernel/time/tick-oneshot.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  * This file contains functions which manage high resolution tick
  * related events.
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  *  Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
  *  Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  *  Copyright (C) 1991, 1992  Linus Torvalds
  *
--- a/kernel/time/timeconst.bc
+++ b/kernel/time/timeconst.bc
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL2.0 */
+
 scale=0
 
 define gcd(a,b) {
--- a/kernel/time/timeconv.c
+++ b/kernel/time/timeconv.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: LGPL2.0+
 /*
  * Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
  * This file is part of the GNU C Library.
--- a/kernel/time/timecounter.c
+++ b/kernel/time/timecounter.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0+
 /*
  * based on code that migrated away from linux/kernel/time/clocksource.c
  *
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  *  Kernel timekeeping code and accessor functions
  *
--- a/kernel/time/timekeeping_debug.c
+++ b/kernel/time/timekeeping_debug.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0+
 /*
  * debugfs file to track time spent in suspend
  *
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  *  Kernel internal timers
  *
--- a/kernel/time/timer_list.c
+++ b/kernel/time/timer_list.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL2.0
 /*
  * List pending timers
  *

[patch 03/3] time: Remove license boilerplates and sloppy references

[Thomas Gleixner]

[-- Attachment #1: time--Remove-license-boilerplates-and-sloppy-references.patch --]
[-- Type: text/plain, Size: 13376 bytes --]

Now that the SPDX tag is in all time(r) core files, that identifies the
license in a specific and legally-defined manner.  So the extra GPL text
wording can be removed as it is no longer needed at all.
    
This is done on a quest to remove the 700+ different ways that files in the
kernel describe the GPL license text.  And there's unneeded stuff like the
address (sometimes incorrect) for the FSF or other entities which is never
needed.
    
No copyright headers or other non-license-description text was removed.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 include/linux/hrtimer.h         |    2 --
 kernel/time/alarmtimer.c        |    4 ----
 kernel/time/clockevents.c       |    3 ---
 kernel/time/clocksource.c       |   14 --------------
 kernel/time/hrtimer.c           |    2 --
 kernel/time/jiffies.c           |   25 +++++--------------------
 kernel/time/posix-clock.c       |   14 --------------
 kernel/time/posix-stubs.c       |    4 ----
 kernel/time/posix-timers.c      |   20 +-------------------
 kernel/time/sched_clock.c       |    4 ----
 kernel/time/test_udelay.c       |    9 ---------
 kernel/time/tick-broadcast.c    |    3 ---
 kernel/time/tick-common.c       |    3 ---
 kernel/time/tick-oneshot.c      |    3 ---
 kernel/time/tick-sched.c        |    2 --
 kernel/time/timeconv.c          |   17 -----------------
 kernel/time/timecounter.c       |   10 ----------
 kernel/time/timekeeping_debug.c |   10 ----------
 kernel/time/timer_list.c        |    4 ----
 19 files changed, 6 insertions(+), 147 deletions(-)

--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -8,8 +8,6 @@
  *  data type definitions, declarations, prototypes
  *
  *  Started by: Thomas Gleixner and Ingo Molnar
- *
- *  For licencing details see kernel-base/COPYING
  */
 #ifndef _LINUX_HRTIMER_H
 #define _LINUX_HRTIMER_H
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -11,10 +11,6 @@
  * Copyright (C) 2010 IBM Corperation
  *
  * Author: John Stultz <john.stultz@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 #include <linux/time.h>
 #include <linux/hrtimer.h>
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -5,9 +5,6 @@
  * Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
  * Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
  * Copyright(C) 2006-2007, Timesys Corp., Thomas Gleixner
- *
- * This code is licenced under the GPL version 2. For details see
- * kernel-base/COPYING.
  */
 
 #include <linux/clockchips.h>
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -3,20 +3,6 @@
  * This file contains the functions which manage clocksource drivers.
  *
  * Copyright (C) 2004, 2005 IBM, John Stultz (johnstul@us.ibm.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -20,8 +20,6 @@
  *
  *	George Anzinger, Andrew Morton, Steven Rostedt, Roman Zippel
  *	et. al.
- *
- *  For licencing details see kernel-base/COPYING
  */
 
 #include <linux/cpu.h>
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -1,24 +1,9 @@
 // SPDX-License-Identifier: GPL2.0+
-/***********************************************************************
-* This file contains the jiffies based clocksource.
-*
-* Copyright (C) 2004, 2005 IBM, John Stultz (johnstul@us.ibm.com)
-*
-* This program is free software; you can redistribute it and/or modify
-* it under the terms of the GNU General Public License as published by
-* the Free Software Foundation; either version 2 of the License, or
-* (at your option) any later version.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program; if not, write to the Free Software
-* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-************************************************************************/
+/*
+ * This file contains the jiffies based clocksource.
+ *
+ * Copyright (C) 2004, 2005 IBM, John Stultz (johnstul@us.ibm.com)
+ */
 #include <linux/clocksource.h>
 #include <linux/jiffies.h>
 #include <linux/module.h>
--- a/kernel/time/posix-clock.c
+++ b/kernel/time/posix-clock.c
@@ -3,20 +3,6 @@
  * Support for dynamic clock devices
  *
  * Copyright (C) 2010 OMICRON electronics GmbH
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 #include <linux/device.h>
 #include <linux/export.h>
--- a/kernel/time/posix-stubs.c
+++ b/kernel/time/posix-stubs.c
@@ -4,10 +4,6 @@
  *
  * Created by:  Nicolas Pitre, July 2016
  * Copyright:   (C) 2016 Linaro Limited
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/linkage.h>
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -7,25 +7,7 @@
  * 2004-06-01  Fix CLOCK_REALTIME clock/timer TIMER_ABSTIME bug.
  *			     Copyright (C) 2004 Boris Hu
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
-
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * MontaVista Software | 1237 East Arques Avenue | Sunnyvale | CA 94085 | USA
- */
-
-/* These are all the functions necessary to implement
- * POSIX clocks & timers
+ * These are all the functions necessary to implement POSIX clocks & timers
  */
 #include <linux/mm.h>
 #include <linux/interrupt.h>
--- a/kernel/time/sched_clock.c
+++ b/kernel/time/sched_clock.c
@@ -2,10 +2,6 @@
 /*
  * Generic sched_clock() support, to extend low level hardware time
  * counters to full 64-bit ns values.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 #include <linux/clocksource.h>
 #include <linux/init.h>
--- a/kernel/time/test_udelay.c
+++ b/kernel/time/test_udelay.c
@@ -8,15 +8,6 @@
  * Specifying usecs of 0 or negative values will run multiples tests.
  *
  * Copyright (C) 2014 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #include <linux/debugfs.h>
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -6,9 +6,6 @@
  * Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
  * Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
  * Copyright(C) 2006-2007, Timesys Corp., Thomas Gleixner
- *
- * This code is licenced under the GPL version 2. For details see
- * kernel-base/COPYING.
  */
 #include <linux/cpu.h>
 #include <linux/err.h>
--- a/kernel/time/tick-common.c
+++ b/kernel/time/tick-common.c
@@ -6,9 +6,6 @@
  * Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
  * Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
  * Copyright(C) 2006-2007, Timesys Corp., Thomas Gleixner
- *
- * This code is licenced under the GPL version 2. For details see
- * kernel-base/COPYING.
  */
 #include <linux/cpu.h>
 #include <linux/err.h>
--- a/kernel/time/tick-oneshot.c
+++ b/kernel/time/tick-oneshot.c
@@ -6,9 +6,6 @@
  * Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
  * Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
  * Copyright(C) 2006-2007, Timesys Corp., Thomas Gleixner
- *
- * This code is licenced under the GPL version 2. For details see
- * kernel-base/COPYING.
  */
 #include <linux/cpu.h>
 #include <linux/err.h>
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -7,8 +7,6 @@
  *  No idle tick implementation for low and high resolution timers
  *
  *  Started by: Thomas Gleixner and Ingo Molnar
- *
- *  Distribute under GPLv2.
  */
 #include <linux/cpu.h>
 #include <linux/err.h>
--- a/kernel/time/timeconv.c
+++ b/kernel/time/timeconv.c
@@ -4,23 +4,6 @@
  * This file is part of the GNU C Library.
  * Contributed by Paul Eggert (eggert@twinsun.com).
  *
- * The GNU C Library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * The GNU C Library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with the GNU C Library; see the file COPYING.LIB.  If not,
- * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-/*
  * Converts the calendar time to broken-down time representation
  * Based on code from glibc-2.6
  *
--- a/kernel/time/timecounter.c
+++ b/kernel/time/timecounter.c
@@ -1,16 +1,6 @@
 // SPDX-License-Identifier: GPL2.0+
 /*
  * based on code that migrated away from linux/kernel/time/clocksource.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #include <linux/export.h>
--- a/kernel/time/timekeeping_debug.c
+++ b/kernel/time/timekeeping_debug.c
@@ -3,16 +3,6 @@
  * debugfs file to track time spent in suspend
  *
  * Copyright (c) 2011, Google, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 
 #include <linux/debugfs.h>
--- a/kernel/time/timer_list.c
+++ b/kernel/time/timer_list.c
@@ -3,10 +3,6 @@
  * List pending timers
  *
  * Copyright(C) 2006, Red Hat, Inc., Ingo Molnar
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/proc_fs.h>

Re: [patch 01/3] time: Remove useless filenames in top level comments

[Greg Kroah-Hartman]

On Mon, Mar 19, 2018 at 11:04:42AM +0100, Thomas Gleixner wrote:
> Remove the pointless filenames in the top level comments. They have no
> value at all and just occupy space. While at it tidy up some of the
> comments.
> 
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Reviewed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Re: [patch 02/3] time: Add SPDX license identifiers

[Greg Kroah-Hartman]

On Mon, Mar 19, 2018 at 11:04:43AM +0100, Thomas Gleixner wrote:
> Update the time(r) core files files with the correct SPDX license
> identifier based on the license text in the file itself. The SPDX
> identifier is a legally binding shorthand, which can be used instead of the
> full boiler plate text.
> 
> This work is based on a script and data from Philippe Ombredanne, Kate
> Stewart and myself. The data has been created with two independent license
> scanners and manual inspection.
> 
> The following files do not contain any direct license information and have
> been omitted from the big initial SPDX changes:
> 
>   timeconst.bc: The .bc files were not touched
>   time.c, timer.c, timekeeping.c: Licence was deduced from EXPORT_SYMBOL_GPL
> 
> As those files do not contain direct license references they fall under the
> project license, i.e. GPL V2 only.
> 
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Reviewed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Re: [patch 03/3] time: Remove license boilerplates and sloppy references

[Greg Kroah-Hartman]

On Mon, Mar 19, 2018 at 11:04:44AM +0100, Thomas Gleixner wrote:
> Now that the SPDX tag is in all time(r) core files, that identifies the
> license in a specific and legally-defined manner.  So the extra GPL text
> wording can be removed as it is no longer needed at all.
>     
> This is done on a quest to remove the 700+ different ways that files in the
> kernel describe the GPL license text.  And there's unneeded stuff like the
> address (sometimes incorrect) for the FSF or other entities which is never
> needed.
>     
> No copyright headers or other non-license-description text was removed.
> 
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Reviewed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>