| Commit message (Collapse) | Author | Age | Files | Lines |
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Simply marking the main update loop section and adding a
comment describing it.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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moving the helper function to closer to similar functions.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Given that this is simple wrapper, adding the inline flag.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Moving the helper to closer where it is used.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Removing style issues on __bind() and its helpers.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Moving the helper to closer where it is used.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Moving the helper to closer where it is used.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Simply moving the helper to closer where it is actually used.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Simply aligning to parenthesis.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Given that idr is only used to get id for thermal devices
(zones and cooling), makes sense to move the code closer.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Organize thermal core code to group the functions
handling with governor manipulation in one single section.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Here we have a simple code organization. This patch moves
functions that do not need to handle thermal core internal
data structure to thermal_helpers.c file.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Reorganizing the code of helper functions to improve
readability and style, as recommended by checkpatch.pl.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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This is a code reorganization, simply to concentrate
the sysfs handling functions in thermal_sysfs.c.
This patch moves the cooling device handling functions.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Make the to_cooling_device() macro available across
files in thermal core.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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This is a code reorganization, simply to concentrate
the code handling sysfs in a specific file: thermal_sysfs.c.
Right now, moving only the sysfs entries of thermal_zone_device.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Cosmetic change in the sysfs handling functions, as
recommended by checkpatch.pl.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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This patch checks the return value of all calls to *scanf.
The check is to simply match the number of expect inputs.
The current code does not do any recovery in case the
number of treated inputs are different than the expected.
Therefore, keeping the same behavior.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Simply making this macro available to other thermal core
files.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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This patch creates a helper to build a list of available governors.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Similarly to passive_store, policy_store now is split
between thermal core data structure handling and sysfs handling.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Split passive_store between sysfs handling and thermal
core internal data handling.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Given that cdevs sysfs properties are already registered using
the dev.groups, there is no need to explicitly call device_remove()
for each property.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Finally, move the last thermal zone sysfs attributes to
tz->device.groups: trips attributes. This requires adding a
attribute_group to thermal_zone_device, creating it dynamically, and
then setting all trips attributes in it. The trips attribute is then
added to the tz->device.groups.
As the removal of all attributes are handled by device core, the device
remove calls are not needed anymore.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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This is a patch to allow adding groups created dynamically. For now we
create only the existing group. However, this is a preparation to allow
creating trip groups, which are determined only when the number of trips
are known at runtime.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Code reorganization to keep all the sysfs I/F of a thermal zone in the
same section.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Align to parentheses, removing checkpatch warning.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Fix style problem on create_trip_attrs();
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Simply reorganize code to keep only functions of sysfs interface
of thermal zone device together. Therefore, move the power actor code
out of the sysfs I/F section.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Simple improvement on clarity and removal of checkpatch warning
in the documentation of power actor kernel doc.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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This patch moves the passive attribute to tz->device.groups. Moving the
passive attribute also requires a .is_visible() callback implementation
for its attribute group.
The logic behind the visibility of passive attribute is kept the same.
We only expose the passive attribute if the thermal driver has exposed
at least one passive trip point.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Moving mode attribute to tz->device.groups requires the implementation
of a .is_visible() callback. The condition returned by .is_visible() of
the mode attribute group is kept the same, we allow the attribute to be
visible only if ops->get_mode() is set by the thermal driver.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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emul_temp creation is dependent on a compile time
condition. Moving to tz->device.groups.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Thermal zones attributes are all being created using
device_create_file(). This has the disadvantage of making the code
complicated and sometimes we may miss the cleanup of them.
This patch starts to move the thermal zone sysfs attributes to the
dev.groups, so Linux device core manage them for us. For now, this patch
only moves those attributes are always present regardless of thermal
zone condition.
This change has also the advantage of cleaning up the thermal zone
parameters sysfs entries that are left unclean after device
registration.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Simple code reorganization to group files that are always created
when registering a thermal zone.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Simply reorganize the code to have all DEVICE_ATTR's
in one point in the file.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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There are APIs that rely on tz->type. This patch
prevent thermal zones without it to be registered.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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When the devfreq cooling device was designed, it was an oversight not to
pass a pointer to the struct devfreq as the first parameters of the
callbacks. The design patterns of the kernel suggest it for a good
reason.
By passing a pointer to struct devfreq, the driver can register one
function that works with multiple devices. With the current
implementation, a driver that can work with multiple devices has to
create multiple copies of the same function with different parameters so
that each devfreq_cooling_device can use the appropriate one. By
passing a pointer to struct devfreq, the driver can identify which
device it's referring to.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Reviewed-by: Punit Agrawal <punit.agrawal@arm.com>
Reviewed-by: Ørjan Eide <orjan.eide@arm.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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It is no necessary to print warning agian and again if we don't
add rockchip,grf for dt, otherwise I saw the following log when
doing suspend-2-resume. We only need to print it once when parsing
dt. It looks quite trivial but the log is apparently verbose.
[ 26.615415] PM: early resume of devices complete after 1.539 msecs
[ 26.622002] rk_tsadcv2_initialize: Missing rockchip,grf property
[ 26.629359] rk_gmac-dwmac ff290000.ethernet: init for RGMII
[ 26.639794] PM: resume of devices complete after 18.109 msecs
[ 26.646925] Restarting tasks ... done.
Reviewed-by: Caesar Wang <wxt@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/thermal/db8500_thermal.ko | grep alias
$
After this patch:
$ modinfo drivers/thermal/db8500_thermal.ko | grep alias
alias: of:N*T*Cstericsson,db8500-thermalC*
alias: of:N*T*Cstericsson,db8500-thermal
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/thermal/tango_thermal.ko | grep alias
$
After this patch:
$ modinfo drivers/thermal/tango_thermal.ko | grep alias
alias: of:N*T*Csigma,smp8758-thermalC*
alias: of:N*T*Csigma,smp8758-thermal
Acked-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/thermal/max77620_thermal.ko | grep alias
$
After this patch:
$ modinfo drivers/thermal/max77620_thermal.ko | grep alias
alias: platform:max77620-thermal
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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We only read the first element of the reg property to figure out
the offset of the temperature sensor inside the PMIC.
Furthermore, we want to remove the second element in DT, so just
don't read the second element so that probe keeps working if we
change the DT in the future.
Cc: Ivan T. Ivanov <iivanov.xz@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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The thermal driver is standalone driver which is used to enable
thermal sensors, so it can be used with any cooling device and
should not bind with CPU cooling device driver.
This original patch is suggested by Amit Kucheria; so it's to
polish the dependency in Kconfig, and remove the dependency with
CPU_THERMAL.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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This patch fixes the following Coccinelle error:
./drivers/thermal/ti-soc-thermal/ti-bandgap.c:1441:1-7: \
ERROR: missing clk_put; clk_get on line 1290 \
and execution via conditional on line 1298
Signed-off-by: Luis Henriques <henrix@camandro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.
Replace the wrmsr/rdmrs_on_cpu() calls in the hotplug callbacks as they are
guaranteed to be invoked on the incoming/outgoing cpu.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Packages are kept in a list, which must be searched over and over.
We can be smarter than that and just store the package pointers in an array
which is allocated at init time. Sizing of the array is determined from the
topology information. That makes the package search a simple array lookup.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Delayed work structs are held in a static percpu storage, which makes no
sense at all because work is strictly per package and we never schedule
more than one work per package.
Aside of that the work cancelation in the hotplug is broken when the work
is queued on the outgoing cpu and canceled. Nothing reschedules the work on
another online cpu in the package, so the interrupts stay disabled and the
work_scheduled flag stays active.
Move the delayed work struct into the package struct, which is the only
sensible place to have it.
To simplify the cancelation logic schedule the work always on the cpu which
is the target for the sysfs files. This is required so the cancelation
logic in the cpu offline path cancels only when the outgoing cpu is the
current target and reschedule the work when there is still a online
CPU in the package.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Storage for a boolean information whether work is scheduled for a package
is kept in separate allocated storage, which is resized when the number of
detected packages grows.
With the proper locking in place this is a completely pointless exercise
because we can simply stick it into the per package struct.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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The work cancellation code, the thermal zone unregistering, the work code
and the interrupt notification function are racy against each other and
against cpu hotplug and module exit. The random locking sprinkeled all
over the place does not help anything and probably exists to make people
feel good. The resulting issues (mainly use after free) are probably
hard to trigger, but they clearly exist
Protect the package list with a spinlock so it can be accessed from the
interrupt notifier and also from the work function. The add/removal code in
the hotplug callbacks take the lock for list manipulation. That makes sure
that on removal neither the interrupt notifier nor the work function can
access the about to be freed package structure anymore.
The thermal zone unregistering is another trainwreck. It's not serialized
against the work function. So unregistering the zone device can race with
the work function and cause havoc.
Protect the thermal zone with a mutex, which is held in the work
function to make sure that the zone device is not being unregistered
concurrently.
To solve the module exit issues, we simply invoke the cpu offline callback
and let it work its magic. For that it's required to keep track of the
participating cpus in a package, because topology_core_mask is not affected
by calling the offline callback for teardown of the driver, so it would
never free the package as there is always a valid target in
topology_core_mask.
Use proper names for the locks so it's clear what they are for and add a
pile of comments to explain the protection rules.
It's amazing that fixing the locking and adding 30 lines of comments
explaining it still removes more lines than it adds.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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