License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 14:07:57 +00:00
|
|
|
/* SPDX-License-Identifier: GPL-2.0 */
|
2006-12-07 04:34:23 +00:00
|
|
|
/* Freezer declarations */
|
|
|
|
|
2007-07-17 11:03:35 +00:00
|
|
|
#ifndef FREEZER_H_INCLUDED
|
|
|
|
#define FREEZER_H_INCLUDED
|
|
|
|
|
2013-05-06 23:50:09 +00:00
|
|
|
#include <linux/debug_locks.h>
|
2006-12-10 10:18:58 +00:00
|
|
|
#include <linux/sched.h>
|
2007-10-18 10:04:45 +00:00
|
|
|
#include <linux/wait.h>
|
2011-11-21 20:32:25 +00:00
|
|
|
#include <linux/atomic.h>
|
2006-12-10 10:18:58 +00:00
|
|
|
|
2008-10-19 03:27:19 +00:00
|
|
|
#ifdef CONFIG_FREEZER
|
2011-11-21 20:32:25 +00:00
|
|
|
extern atomic_t system_freezing_cnt; /* nr of freezing conds in effect */
|
|
|
|
extern bool pm_freezing; /* PM freezing in effect */
|
|
|
|
extern bool pm_nosig_freezing; /* PM nosig freezing in effect */
|
|
|
|
|
2013-02-01 08:56:03 +00:00
|
|
|
/*
|
|
|
|
* Timeout for stopping processes
|
|
|
|
*/
|
|
|
|
extern unsigned int freeze_timeout_msecs;
|
|
|
|
|
2006-12-07 04:34:23 +00:00
|
|
|
/*
|
|
|
|
* Check if a process has been frozen
|
|
|
|
*/
|
2011-11-21 20:32:25 +00:00
|
|
|
static inline bool frozen(struct task_struct *p)
|
2006-12-07 04:34:23 +00:00
|
|
|
{
|
|
|
|
return p->flags & PF_FROZEN;
|
|
|
|
}
|
|
|
|
|
2011-11-21 20:32:25 +00:00
|
|
|
extern bool freezing_slow_path(struct task_struct *p);
|
2006-12-07 04:34:23 +00:00
|
|
|
|
|
|
|
/*
|
2011-11-21 20:32:25 +00:00
|
|
|
* Check if there is a request to freeze a process
|
2006-12-07 04:34:23 +00:00
|
|
|
*/
|
2011-11-21 20:32:25 +00:00
|
|
|
static inline bool freezing(struct task_struct *p)
|
2006-12-07 04:34:23 +00:00
|
|
|
{
|
2011-11-21 20:32:25 +00:00
|
|
|
if (likely(!atomic_read(&system_freezing_cnt)))
|
|
|
|
return false;
|
|
|
|
return freezing_slow_path(p);
|
2006-12-07 04:34:23 +00:00
|
|
|
}
|
|
|
|
|
2008-10-19 03:27:21 +00:00
|
|
|
/* Takes and releases task alloc lock using task_lock() */
|
2011-11-21 20:32:23 +00:00
|
|
|
extern void __thaw_task(struct task_struct *t);
|
2006-12-07 04:34:23 +00:00
|
|
|
|
2011-11-21 20:32:23 +00:00
|
|
|
extern bool __refrigerator(bool check_kthr_stop);
|
2006-12-07 04:34:23 +00:00
|
|
|
extern int freeze_processes(void);
|
2011-09-26 18:32:27 +00:00
|
|
|
extern int freeze_kernel_threads(void);
|
2006-12-07 04:34:37 +00:00
|
|
|
extern void thaw_processes(void);
|
2012-01-29 19:35:52 +00:00
|
|
|
extern void thaw_kernel_threads(void);
|
2006-12-07 04:34:23 +00:00
|
|
|
|
2013-05-06 23:50:06 +00:00
|
|
|
/*
|
|
|
|
* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION
|
|
|
|
* If try_to_freeze causes a lockdep warning it means the caller may deadlock
|
|
|
|
*/
|
|
|
|
static inline bool try_to_freeze_unsafe(void)
|
2006-12-07 04:34:23 +00:00
|
|
|
{
|
2011-11-21 20:32:22 +00:00
|
|
|
might_sleep();
|
|
|
|
if (likely(!freezing(current)))
|
|
|
|
return false;
|
2011-11-21 20:32:23 +00:00
|
|
|
return __refrigerator(false);
|
2006-12-07 04:34:23 +00:00
|
|
|
}
|
2006-12-07 04:34:28 +00:00
|
|
|
|
2013-05-06 23:50:06 +00:00
|
|
|
static inline bool try_to_freeze(void)
|
|
|
|
{
|
2013-05-06 23:50:09 +00:00
|
|
|
if (!(current->flags & PF_NOFREEZE))
|
|
|
|
debug_check_no_locks_held();
|
2013-05-06 23:50:06 +00:00
|
|
|
return try_to_freeze_unsafe();
|
|
|
|
}
|
|
|
|
|
2011-11-21 20:32:26 +00:00
|
|
|
extern bool freeze_task(struct task_struct *p);
|
2011-11-23 17:28:17 +00:00
|
|
|
extern bool set_freezable(void);
|
2008-10-19 03:27:19 +00:00
|
|
|
|
2008-10-19 03:27:21 +00:00
|
|
|
#ifdef CONFIG_CGROUP_FREEZER
|
2011-11-21 20:32:25 +00:00
|
|
|
extern bool cgroup_freezing(struct task_struct *task);
|
2008-10-19 03:27:21 +00:00
|
|
|
#else /* !CONFIG_CGROUP_FREEZER */
|
2011-11-21 20:32:25 +00:00
|
|
|
static inline bool cgroup_freezing(struct task_struct *task)
|
2010-03-26 22:51:44 +00:00
|
|
|
{
|
2011-11-21 20:32:25 +00:00
|
|
|
return false;
|
2010-03-26 22:51:44 +00:00
|
|
|
}
|
2008-10-19 03:27:21 +00:00
|
|
|
#endif /* !CONFIG_CGROUP_FREEZER */
|
|
|
|
|
2007-05-23 20:57:25 +00:00
|
|
|
/*
|
|
|
|
* The PF_FREEZER_SKIP flag should be set by a vfork parent right before it
|
|
|
|
* calls wait_for_completion(&vfork) and reset right after it returns from this
|
|
|
|
* function. Next, the parent should call try_to_freeze() to freeze itself
|
|
|
|
* appropriately in case the child has exited before the freezing of tasks is
|
|
|
|
* complete. However, we don't want kernel threads to be frozen in unexpected
|
|
|
|
* places, so we allow them to block freeze_processes() instead or to set
|
2011-12-06 22:17:51 +00:00
|
|
|
* PF_NOFREEZE if needed. Fortunately, in the ____call_usermodehelper() case the
|
|
|
|
* parent won't really block freeze_processes(), since ____call_usermodehelper()
|
|
|
|
* (the child) does a little before exec/exit and it can't be frozen before
|
|
|
|
* waking up the parent.
|
2007-05-23 20:57:25 +00:00
|
|
|
*/
|
|
|
|
|
2011-12-06 22:17:51 +00:00
|
|
|
|
2012-10-16 22:03:14 +00:00
|
|
|
/**
|
|
|
|
* freezer_do_not_count - tell freezer to ignore %current
|
|
|
|
*
|
|
|
|
* Tell freezers to ignore the current task when determining whether the
|
|
|
|
* target frozen state is reached. IOW, the current task will be
|
|
|
|
* considered frozen enough by freezers.
|
|
|
|
*
|
|
|
|
* The caller shouldn't do anything which isn't allowed for a frozen task
|
|
|
|
* until freezer_cont() is called. Usually, freezer[_do_not]_count() pair
|
|
|
|
* wrap a scheduling operation and nothing much else.
|
|
|
|
*/
|
2007-05-23 20:57:25 +00:00
|
|
|
static inline void freezer_do_not_count(void)
|
|
|
|
{
|
2011-12-06 22:17:51 +00:00
|
|
|
current->flags |= PF_FREEZER_SKIP;
|
2007-05-23 20:57:25 +00:00
|
|
|
}
|
|
|
|
|
2012-10-16 22:03:14 +00:00
|
|
|
/**
|
|
|
|
* freezer_count - tell freezer to stop ignoring %current
|
|
|
|
*
|
|
|
|
* Undo freezer_do_not_count(). It tells freezers that %current should be
|
|
|
|
* considered again and tries to freeze if freezing condition is already in
|
|
|
|
* effect.
|
2007-05-23 20:57:25 +00:00
|
|
|
*/
|
|
|
|
static inline void freezer_count(void)
|
|
|
|
{
|
2011-12-06 22:17:51 +00:00
|
|
|
current->flags &= ~PF_FREEZER_SKIP;
|
2012-10-16 22:03:14 +00:00
|
|
|
/*
|
|
|
|
* If freezing is in progress, the following paired with smp_mb()
|
|
|
|
* in freezer_should_skip() ensures that either we see %true
|
|
|
|
* freezing() or freezer_should_skip() sees !PF_FREEZER_SKIP.
|
|
|
|
*/
|
|
|
|
smp_mb();
|
2011-12-06 22:17:51 +00:00
|
|
|
try_to_freeze();
|
2007-05-23 20:57:25 +00:00
|
|
|
}
|
|
|
|
|
2013-05-06 23:50:06 +00:00
|
|
|
/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
|
|
|
|
static inline void freezer_count_unsafe(void)
|
|
|
|
{
|
|
|
|
current->flags &= ~PF_FREEZER_SKIP;
|
|
|
|
smp_mb();
|
|
|
|
try_to_freeze_unsafe();
|
|
|
|
}
|
|
|
|
|
2012-10-16 22:03:14 +00:00
|
|
|
/**
|
|
|
|
* freezer_should_skip - whether to skip a task when determining frozen
|
|
|
|
* state is reached
|
|
|
|
* @p: task in quesion
|
|
|
|
*
|
|
|
|
* This function is used by freezers after establishing %true freezing() to
|
|
|
|
* test whether a task should be skipped when determining the target frozen
|
|
|
|
* state is reached. IOW, if this function returns %true, @p is considered
|
|
|
|
* frozen enough.
|
2007-05-23 20:57:25 +00:00
|
|
|
*/
|
2012-10-16 22:03:14 +00:00
|
|
|
static inline bool freezer_should_skip(struct task_struct *p)
|
2007-05-23 20:57:25 +00:00
|
|
|
{
|
2012-10-16 22:03:14 +00:00
|
|
|
/*
|
|
|
|
* The following smp_mb() paired with the one in freezer_count()
|
|
|
|
* ensures that either freezer_count() sees %true freezing() or we
|
|
|
|
* see cleared %PF_FREEZER_SKIP and return %false. This makes it
|
|
|
|
* impossible for a task to slip frozen state testing after
|
|
|
|
* clearing %PF_FREEZER_SKIP.
|
|
|
|
*/
|
|
|
|
smp_mb();
|
|
|
|
return p->flags & PF_FREEZER_SKIP;
|
2007-05-23 20:57:25 +00:00
|
|
|
}
|
2006-12-07 04:34:28 +00:00
|
|
|
|
2011-12-01 21:44:39 +00:00
|
|
|
/*
|
2013-05-06 23:50:13 +00:00
|
|
|
* These functions are intended to be used whenever you want allow a sleeping
|
2012-10-26 17:46:06 +00:00
|
|
|
* task to be frozen. Note that neither return any clear indication of
|
|
|
|
* whether a freeze event happened while in this function.
|
2011-12-01 21:44:39 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
/* Like schedule(), but should not block the freezer. */
|
2013-05-06 23:50:13 +00:00
|
|
|
static inline void freezable_schedule(void)
|
|
|
|
{
|
|
|
|
freezer_do_not_count();
|
|
|
|
schedule();
|
|
|
|
freezer_count();
|
|
|
|
}
|
2011-12-01 21:44:39 +00:00
|
|
|
|
2013-05-06 23:50:06 +00:00
|
|
|
/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
|
2013-05-06 23:50:13 +00:00
|
|
|
static inline void freezable_schedule_unsafe(void)
|
|
|
|
{
|
|
|
|
freezer_do_not_count();
|
|
|
|
schedule();
|
|
|
|
freezer_count_unsafe();
|
|
|
|
}
|
2013-05-06 23:50:06 +00:00
|
|
|
|
2013-05-06 23:50:14 +00:00
|
|
|
/*
|
2017-11-04 21:57:32 +00:00
|
|
|
* Like schedule_timeout(), but should not block the freezer. Do not
|
2013-05-06 23:50:14 +00:00
|
|
|
* call this with locks held.
|
|
|
|
*/
|
|
|
|
static inline long freezable_schedule_timeout(long timeout)
|
|
|
|
{
|
|
|
|
long __retval;
|
|
|
|
freezer_do_not_count();
|
|
|
|
__retval = schedule_timeout(timeout);
|
|
|
|
freezer_count();
|
|
|
|
return __retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Like schedule_timeout_interruptible(), but should not block the freezer. Do not
|
|
|
|
* call this with locks held.
|
|
|
|
*/
|
|
|
|
static inline long freezable_schedule_timeout_interruptible(long timeout)
|
|
|
|
{
|
|
|
|
long __retval;
|
|
|
|
freezer_do_not_count();
|
|
|
|
__retval = schedule_timeout_interruptible(timeout);
|
|
|
|
freezer_count();
|
|
|
|
return __retval;
|
|
|
|
}
|
|
|
|
|
2020-07-06 09:52:24 +00:00
|
|
|
/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
|
|
|
|
static inline long freezable_schedule_timeout_interruptible_unsafe(long timeout)
|
|
|
|
{
|
|
|
|
long __retval;
|
|
|
|
|
|
|
|
freezer_do_not_count();
|
|
|
|
__retval = schedule_timeout_interruptible(timeout);
|
|
|
|
freezer_count_unsafe();
|
|
|
|
return __retval;
|
|
|
|
}
|
|
|
|
|
2011-12-01 21:44:39 +00:00
|
|
|
/* Like schedule_timeout_killable(), but should not block the freezer. */
|
2013-05-06 23:50:13 +00:00
|
|
|
static inline long freezable_schedule_timeout_killable(long timeout)
|
|
|
|
{
|
|
|
|
long __retval;
|
|
|
|
freezer_do_not_count();
|
|
|
|
__retval = schedule_timeout_killable(timeout);
|
|
|
|
freezer_count();
|
|
|
|
return __retval;
|
|
|
|
}
|
2011-12-01 21:44:39 +00:00
|
|
|
|
2013-05-06 23:50:06 +00:00
|
|
|
/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
|
2013-05-06 23:50:13 +00:00
|
|
|
static inline long freezable_schedule_timeout_killable_unsafe(long timeout)
|
|
|
|
{
|
|
|
|
long __retval;
|
|
|
|
freezer_do_not_count();
|
|
|
|
__retval = schedule_timeout_killable(timeout);
|
|
|
|
freezer_count_unsafe();
|
|
|
|
return __retval;
|
|
|
|
}
|
2013-05-06 23:50:06 +00:00
|
|
|
|
2013-05-06 23:50:14 +00:00
|
|
|
/*
|
|
|
|
* Like schedule_hrtimeout_range(), but should not block the freezer. Do not
|
|
|
|
* call this with locks held.
|
|
|
|
*/
|
|
|
|
static inline int freezable_schedule_hrtimeout_range(ktime_t *expires,
|
timer: convert timer_slack_ns from unsigned long to u64
This patchset introduces a /proc/<pid>/timerslack_ns interface which
would allow controlling processes to be able to set the timerslack value
on other processes in order to save power by avoiding wakeups (Something
Android currently does via out-of-tree patches).
The first patch tries to fix the internal timer_slack_ns usage which was
defined as a long, which limits the slack range to ~4 seconds on 32bit
systems. It converts it to a u64, which provides the same basically
unlimited slack (500 years) on both 32bit and 64bit machines.
The second patch introduces the /proc/<pid>/timerslack_ns interface
which allows the full 64bit slack range for a task to be read or set on
both 32bit and 64bit machines.
With these two patches, on a 32bit machine, after setting the slack on
bash to 10 seconds:
$ time sleep 1
real 0m10.747s
user 0m0.001s
sys 0m0.005s
The first patch is a little ugly, since I had to chase the slack delta
arguments through a number of functions converting them to u64s. Let me
know if it makes sense to break that up more or not.
Other than that things are fairly straightforward.
This patch (of 2):
The timer_slack_ns value in the task struct is currently a unsigned
long. This means that on 32bit applications, the maximum slack is just
over 4 seconds. However, on 64bit machines, its much much larger (~500
years).
This disparity could make application development a little (as well as
the default_slack) to a u64. This means both 32bit and 64bit systems
have the same effective internal slack range.
Now the existing ABI via PR_GET_TIMERSLACK and PR_SET_TIMERSLACK specify
the interface as a unsigned long, so we preserve that limitation on
32bit systems, where SET_TIMERSLACK can only set the slack to a unsigned
long value, and GET_TIMERSLACK will return ULONG_MAX if the slack is
actually larger then what can be stored by an unsigned long.
This patch also modifies hrtimer functions which specified the slack
delta as a unsigned long.
Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Oren Laadan <orenl@cellrox.com>
Cc: Ruchi Kandoi <kandoiruchi@google.com>
Cc: Rom Lemarchand <romlem@android.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-03-17 21:20:51 +00:00
|
|
|
u64 delta, const enum hrtimer_mode mode)
|
2013-05-06 23:50:14 +00:00
|
|
|
{
|
|
|
|
int __retval;
|
|
|
|
freezer_do_not_count();
|
|
|
|
__retval = schedule_hrtimeout_range(expires, delta, mode);
|
|
|
|
freezer_count();
|
|
|
|
return __retval;
|
|
|
|
}
|
|
|
|
|
2007-10-18 10:04:45 +00:00
|
|
|
/*
|
2011-10-19 19:30:40 +00:00
|
|
|
* Freezer-friendly wrappers around wait_event_interruptible(),
|
|
|
|
* wait_event_killable() and wait_event_interruptible_timeout(), originally
|
|
|
|
* defined in <linux/wait.h>
|
2007-10-18 10:04:45 +00:00
|
|
|
*/
|
|
|
|
|
2013-05-07 17:52:05 +00:00
|
|
|
/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
|
|
|
|
#define wait_event_freezekillable_unsafe(wq, condition) \
|
|
|
|
({ \
|
|
|
|
int __retval; \
|
|
|
|
freezer_do_not_count(); \
|
|
|
|
__retval = wait_event_killable(wq, (condition)); \
|
|
|
|
freezer_count_unsafe(); \
|
|
|
|
__retval; \
|
|
|
|
})
|
|
|
|
|
2008-10-19 03:27:19 +00:00
|
|
|
#else /* !CONFIG_FREEZER */
|
2011-11-21 20:32:25 +00:00
|
|
|
static inline bool frozen(struct task_struct *p) { return false; }
|
2011-11-21 20:32:25 +00:00
|
|
|
static inline bool freezing(struct task_struct *p) { return false; }
|
2011-11-24 23:44:55 +00:00
|
|
|
static inline void __thaw_task(struct task_struct *t) {}
|
2006-12-07 04:34:23 +00:00
|
|
|
|
2011-11-21 20:32:23 +00:00
|
|
|
static inline bool __refrigerator(bool check_kthr_stop) { return false; }
|
2011-09-26 18:32:27 +00:00
|
|
|
static inline int freeze_processes(void) { return -ENOSYS; }
|
|
|
|
static inline int freeze_kernel_threads(void) { return -ENOSYS; }
|
2006-12-07 04:34:23 +00:00
|
|
|
static inline void thaw_processes(void) {}
|
2012-01-29 19:35:52 +00:00
|
|
|
static inline void thaw_kernel_threads(void) {}
|
2006-12-07 04:34:23 +00:00
|
|
|
|
2012-11-23 20:55:19 +00:00
|
|
|
static inline bool try_to_freeze_nowarn(void) { return false; }
|
2011-11-21 20:32:22 +00:00
|
|
|
static inline bool try_to_freeze(void) { return false; }
|
2006-12-07 04:34:23 +00:00
|
|
|
|
2007-05-23 20:57:25 +00:00
|
|
|
static inline void freezer_do_not_count(void) {}
|
|
|
|
static inline void freezer_count(void) {}
|
|
|
|
static inline int freezer_should_skip(struct task_struct *p) { return 0; }
|
2007-07-17 11:03:35 +00:00
|
|
|
static inline void set_freezable(void) {}
|
2007-10-18 10:04:45 +00:00
|
|
|
|
2011-12-01 21:44:39 +00:00
|
|
|
#define freezable_schedule() schedule()
|
|
|
|
|
2013-05-06 23:50:06 +00:00
|
|
|
#define freezable_schedule_unsafe() schedule()
|
|
|
|
|
2013-05-06 23:50:14 +00:00
|
|
|
#define freezable_schedule_timeout(timeout) schedule_timeout(timeout)
|
|
|
|
|
|
|
|
#define freezable_schedule_timeout_interruptible(timeout) \
|
|
|
|
schedule_timeout_interruptible(timeout)
|
|
|
|
|
2020-07-06 09:52:24 +00:00
|
|
|
#define freezable_schedule_timeout_interruptible_unsafe(timeout) \
|
|
|
|
schedule_timeout_interruptible(timeout)
|
|
|
|
|
2011-12-01 21:44:39 +00:00
|
|
|
#define freezable_schedule_timeout_killable(timeout) \
|
|
|
|
schedule_timeout_killable(timeout)
|
|
|
|
|
2013-05-06 23:50:06 +00:00
|
|
|
#define freezable_schedule_timeout_killable_unsafe(timeout) \
|
|
|
|
schedule_timeout_killable(timeout)
|
|
|
|
|
2013-05-06 23:50:14 +00:00
|
|
|
#define freezable_schedule_hrtimeout_range(expires, delta, mode) \
|
|
|
|
schedule_hrtimeout_range(expires, delta, mode)
|
|
|
|
|
2013-05-07 17:52:05 +00:00
|
|
|
#define wait_event_freezekillable_unsafe(wq, condition) \
|
|
|
|
wait_event_killable(wq, condition)
|
|
|
|
|
2008-10-19 03:27:19 +00:00
|
|
|
#endif /* !CONFIG_FREEZER */
|
2007-07-17 11:03:35 +00:00
|
|
|
|
|
|
|
#endif /* FREEZER_H_INCLUDED */
|