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This adds the TCM interface to Linux, when active, it will
detect and report TCM memories and sizes early in boot if
present, introduce generic TCM memory handling, provide a
generic TCM memory pool and select TCM memory for the U300
platform.
See the Documentation/arm/tcm.txt for documentation.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus3' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
SELinux: inline selinux_is_enabled in !CONFIG_SECURITY_SELINUX
KEYS: Fix garbage collector
KEYS: Unlock tasklist when exiting early from keyctl_session_to_parent
CRED: Allow put_cred() to cope with a NULL groups list
SELinux: flush the avc before disabling SELinux
SELinux: seperate avc_cache flushing
Creds: creds->security can be NULL is selinux is disabled
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Without this patch building a kernel emits millions of warning like:
include/linux/selinux.h:92: warning: ?selinux_is_enabled? defined but not used
When it is build without CONFIG_SECURITY_SELINUX. This is harmless, but
the function should be inlined, so it gets compiled out.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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Fix a number of problems with the new key garbage collector:
(1) A rogue semicolon in keyring_gc() was causing the initial count of dead
keys to be miscalculated.
(2) A missing return in keyring_gc() meant that under certain circumstances,
the keyring semaphore would be unlocked twice.
(3) The key serial tree iterator (key_garbage_collector()) part of the garbage
collector has been modified to:
(a) Complete each scan of the keyrings before setting the new timer.
(b) Only set the new timer for keys that have yet to expire. This means
that the new timer is now calculated correctly, and the gc doesn't
get into a loop continually scanning for keys that have expired, and
preventing other things from happening, like RCU cleaning up the old
keyring contents.
(c) Perform an extra scan if any keys were garbage collected in this one
as a key might become garbage during a scan, and (b) could mean we
don't set the timer again.
(4) Made key_schedule_gc() take the time at which to do a collection run,
rather than the time at which the key expires. This means the collection
of dead keys (key type unregistered) can happen immediately.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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When we exit early from keyctl_session_to_parent because of permissions or
because the session keyring is the same as the parent, we need to unlock the
tasklist.
The missing unlock causes the system to hang completely when using
keyctl(KEYCTL_SESSION_TO_PARENT) with a keyring shared with the parent.
Signed-off-by: Marc Dionne <marc.c.dionne@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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put_cred() will oops if given a NULL groups list, but that is now possible with
the existence of cred_alloc_blank(), as used in keyctl_session_to_parent().
Added in commit:
commit ee18d64c1f632043a02e6f5ba5e045bb26a5465f
Author: David Howells <dhowells@redhat.com>
Date: Wed Sep 2 09:14:21 2009 +0100
KEYS: Add a keyctl to install a process's session keyring on its parent [try #6]
Reported-by: Marc Dionne <marc.c.dionne@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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Before SELinux is disabled at boot it can create AVC entries. This patch
will flush those entries before disabling SELinux.
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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Move the avc_cache flushing into it's own function so it can be reused when
disabling SELinux.
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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__validate_process_creds should check if selinux is actually enabled before
running tests on the selinux portion of the credentials struct.
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: (23 commits)
at_hdmac: Rework suspend_late()/resume_early()
PM: Reset transition_started at dpm_resume_noirq
PM: Update kerneldoc comments in drivers/base/power/main.c
PM: Add convenience macro to make switching to dev_pm_ops less error-prone
hp-wmi: Switch driver to dev_pm_ops
floppy: Switch driver to dev_pm_ops
PM: Trivial fixes
PM / Hibernate / Memory hotplug: Always use for_each_populated_zone()
PM/Hibernate: Do not try to allocate too much memory too hard (rev. 2)
PM/Hibernate: Do not release preallocated memory unnecessarily (rev. 2)
PM/Hibernate: Rework shrinking of memory
PM: Fix typo in label name s/Platofrm_finish/Platform_finish/
PM: Run-time PM platform device bus support
PM: Introduce core framework for run-time PM of I/O devices (rev. 17)
Driver Core: Make PM operations a const pointer
PM: Remove platform device suspend_late()/resume_early() V2
USB: Rework musb suspend()/resume_early()
I2C: Rework i2c-s3c2410 suspend_late()/resume() V2
I2C: Rework i2c-pxa suspend_late()/resume_early()
DMA: Rework txx9dmac suspend_late()/resume_early()
...
Fix trivial conflict in drivers/base/platform.c (due to same
constification patch being merged in both sides, along with some other
PM work in the PM branch)
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This patch reworks platform driver power management code
for at_hdmac from legacy late/early callbacks to dev_pm_ops.
The callbacks are converted for CONFIG_SUSPEND like this:
suspend_late() -> suspend_noirq()
resume_early() -> resume_noirq()
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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transition_started should be set once the preparation of devices for
a PM has started, reset before starting to resume devices. When
resuming devices, kernel calls dpm_resume_noirq then
dpm_resume_end(dpm_resume). Thus we should reset transition_started
at dpm_resume_noirq.
This patch fixes ACPI warning when resuming from suspend/hibernate:
ACPI: \_SB_.PCI0.IDE1.PRI1.MAS1 - docking
------------[ cut here ]------------
WARNING: at drivers/base/power/main.c:87 device_pm_add+0x8b/0xcc()
Hardware name: OptiPlex 760
Device: acpi
Parentless device registered during a PM transaction
[rjw: Fixed up the changelog.]
Signed-off-by: Xiaotian Feng <dfeng@redhat.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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The kerneldoc comments in drivers/base/power/main.c are generally
outdated and some of them don't describe the functions very
accurately. Update them and standardize the format to use spaces
instead of tabs.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
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In a number of cases, the .suspend, .freeze, .poweroff and .resume,
.thaw, .restore functions are identical. However, they all need to be
assigned to avoid regressionsm as the previous code called .suspend
resp. .resume in all those cases. SIMPLE_DEV_PM_OPS helps to deal
with this case.
[rjw: Changed the name of the macro and added the comment explaining its
purpose.]
Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Gets rid of the following warning:
Platform driver 'hp-wmi' needs updating - please use dev_pm_ops
I tested that the resume handler still works on my HP 2510p notebook.
[rjw: Fixed up the definition of hp_wmi_pm_ops.]
Signed-off-by: Frans Pop <elendil@planet.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Gets rid of the following warning:
Platform driver 'floppy' needs updating - please use dev_pm_ops
[rjw: Fixed up the definition of floppy_pm_ops.]
Signed-off-by: Frans Pop <elendil@planet.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Fix the definition of BM_BITS_PER_BLOCK and kerneldoc
description of create_bm_block_list().
[rjw: Added changelog.]
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Use for_each_populated_zone() instead of for_each_zone() in hibernation
code. This fixes a bug on s390, where we allow both config options
HIBERNATION and MEMORY_HOTPLUG, so that we also have a ZONE_MOVABLE
here. We only allow hibernation if no memory hotplug operation was
performed, so in fact both features can only be used exclusively, but
this way we don't need 2 differently configured (distribution) kernels.
If we have an unpopulated ZONE_MOVABLE, we allow hibernation but run
into a BUG_ON() in memory_bm_test/set/clear_bit() because hibernation
code iterates through all zones, not only the populated zones, in
several places. For example, swsusp_free() does for_each_zone() and
then checks for pfn_valid(), which is true even if the zone is not
populated, resulting in a BUG_ON() later because the pfn cannot be
found in the memory bitmap.
Replacing all occurences of for_each_zone() in hibernation code with
for_each_populated_zone() would fix this issue.
[rjw: Rebased on top of linux-next hibernation patches.]
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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We want to avoid attempting to free too much memory too hard during
hibernation, so estimate the minimum size of the image to use as the
lower limit for preallocating memory.
The approach here is based on the (experimental) observation that we
can't free more page frames than the sum of:
* global_page_state(NR_SLAB_RECLAIMABLE)
* global_page_state(NR_ACTIVE_ANON)
* global_page_state(NR_INACTIVE_ANON)
* global_page_state(NR_ACTIVE_FILE)
* global_page_state(NR_INACTIVE_FILE)
minus
* global_page_state(NR_FILE_MAPPED)
Namely, if this number is subtracted from the number of saveable
pages in the system, we get a good estimate of the minimum reasonable
size of a hibernation image.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Wu Fengguang <fengguang.wu@intel.com>
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Since the hibernation code is now going to use allocations of memory
to make enough room for the image, it can also use the page frames
allocated at this stage as image page frames. The low-level
hibernation code needs to be rearranged for this purpose, but it
allows us to avoid freeing a great number of pages and allocating
these same pages once again later, so it generally is worth doing.
[rev. 2: Take highmem into account correctly.]
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Rework swsusp_shrink_memory() so that it calls shrink_all_memory()
just once to make some room for the image and then allocates memory
to apply more pressure to the memory management subsystem, if
necessary.
Unfortunately, we don't seem to be able to drop shrink_all_memory()
entirely just yet, because that would lead to huge performance
regressions in some test cases.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
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Although the same label name is used somewhere else in the file, this
particular label was consistently typoed in all of its uses.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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This patch adds default Runtime PM callbacks to the dev_pm_ops
belonging to the platform bus. The callbacks are weak symbols
that architecture specific code can override.
Allows Runtime PM even though CONFIG_PM_SLEEP=n.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Introduce a core framework for run-time power management of I/O
devices. Add device run-time PM fields to 'struct dev_pm_info'
and device run-time PM callbacks to 'struct dev_pm_ops'. Introduce
a run-time PM workqueue and define some device run-time PM helper
functions at the core level. Document all these things.
Special thanks to Alan Stern for his help with the design and
multiple detailed reviews of the pereceding versions of this patch
and to Magnus Damm for testing feedback.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Magnus Damm <damm@igel.co.jp>
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They are not supposed to be modified by drivers, so make them const.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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This is V2 of the platform driver power management late/early
callback removal patch. The callbacks ->suspend_late() and
->resume_early() are removed since all in-tree users now have
been migrated to dev_pm_ops.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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This patch reworks platform driver power management code
for musb from legacy callbacks to dev_pm_ops.
The callbacks are converted for CONFIG_SUSPEND like this:
suspend() -> suspend()
resume_early() -> resume_noirq()
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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This is V2 of the i2c-s3c2410 dev_pm_ops patch.
The callbacks are converted for CONFIG_SUSPEND like this:
suspend_late() -> suspend_noirq()
resume() -> resume()
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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This patch reworks platform driver power management code
for i2c-pxa from legacy late/early callbacks to dev_pm_ops.
The callbacks are converted for CONFIG_SUSPEND like this:
suspend_late() -> suspend_noirq()
resume_early() -> resume_noirq()
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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This patch reworks platform driver power management code
for txx9dmac from legacy late/early callbacks to dev_pm_ops.
The callbacks are converted for CONFIG_SUSPEND like this:
suspend_late() -> suspend_noirq()
resume_early() -> resume_noirq()
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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This patch reworks platform driver power management code
for dw_dmac from legacy late/early callbacks to dev_pm_ops.
The callbacks are converted for CONFIG_SUSPEND like this:
suspend_late() -> suspend_noirq()
resume_early() -> resume_noirq()
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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This patch reworks platform driver power management code
for omap drivers using late/early legacy callbacks.
The callbacks are converted for CONFIG_SUSPEND like this:
suspend_late() -> suspend_noirq()
resume_early() -> resume_noirq()
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Allow architecture specific data in struct platform_device V3.
With this patch struct pdev_archdata is added to struct
platform_device, similar to struct dev_archdata in found in
struct device. Useful for architecture code that needs to
keep extra data associated with each platform device.
Struct pdev_archdata is different from dev.platform_data, the
convention is that dev.platform_data points to driver-specific
data. It may or may not be required by the driver. The format
of this depends on driver but is the same across architectures.
The structure pdev_archdata is a place for architecture specific
data. This data is handled by architecture specific code (for
example runtime PM), and since it is architecture specific it
should _never_ be touched by device driver code. Exactly like
struct dev_archdata but for platform devices.
[rjw: This change is for power management mostly and that's why it
goes through the suspend tree.]
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig:
kconfig: add missing dependency of conf to localyesconfig
kconfig: test if a .config already exists
kconfig: make local .config default for streamline_config
kconfig: test for /boot/config-uname after /proc/config.gz in localconfig
kconfig: unset IKCONFIG_PROC and clean up nesting
kconfig: search for a config to base the local(mod|yes)config on
kconfig: keep config.gz around even if CONFIG_IKCONFIG_PROC is not set
kconfig: have extract-ikconfig read ELF files
kconfig: add check if end exists in extract-ikconfig
kconfig: enable CONFIG_IKCONFIG from streamline_config.pl
kconfig: do not warn about modules built in
kconfig: streamline_config.pl do not stop with no depends
kconfig: add make localyesconfig option
kconfig: make localmodconfig to run streamline_config.pl
kconfig: add streamline_config.pl to scripts
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There's a dependency missing.
$ make localyesconfig
HOSTCC scripts/basic/fixdep
HOSTCC scripts/basic/docproc
HOSTCC scripts/basic/hash
using config: '/boot/config-2.6.27.25-78.2.56.fc9.x86_64'
/bin/sh: line 8: scripts/kconfig/conf: No such file or directory
make[1]: *** [localyesconfig] Error 127
make: *** [localyesconfig] Error 2
Thus the script failed to run. But the sed command that converts the '=m'
to '=y' still ran. This gives us a distro config with all modules
converted to built in!
The missing dependency was for conf for localyesconfig. This
dependency was already set for localmodconfig.
Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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If one were to run localmodconfig or localyesconfig without having
a .config already in the file, then the end of the process would give
a warning when it tries to move the old .config to .config.old.
This patch adds a test to check if .config exists and avoid the moves
if it does not.
[ Impact: remove warning after make localmodconfig ]
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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As Andi Kleen pointed out, most people would expect that the local .config
file to be based for a streamline config. This patch changes the order
of searching for a config file to consider the .config in the local
directory first.
Reported-by: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Many distros put their config in /boot/config-`uname -r`, add a check
for that right after /proc/config.gz
Reported-by: Alan Jenkins <sourcejedi.lkml@googlemail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Due to cut and paste error IKCONFIG was both set and cleared.
It was suppose to be IKCONFIG_PROC to be cleared.
Also cleaned up if nesting.
Reported-by: Alan Jenkins <sourcejedi.lkml@googlemail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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