| Age | Commit message (Collapse) | Author |
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1851799e1d29 ("thermal: Fix use-after-free when unregistering thermal zone
device") changed cancel_delayed_work to cancel_delayed_work_sync to avoid
a use-after-free issue. However, cancel_delayed_work_sync could be called
insides the WQ causing deadlock.
[54109.642398] c0 1162 kworker/u17:1 D 0 11030 2 0x00000000
[54109.642437] c0 1162 Workqueue: thermal_passive_wq thermal_zone_device_check
[54109.642447] c0 1162 Call trace:
[54109.642456] c0 1162 __switch_to+0x138/0x158
[54109.642467] c0 1162 __schedule+0xba4/0x1434
[54109.642480] c0 1162 schedule_timeout+0xa0/0xb28
[54109.642492] c0 1162 wait_for_common+0x138/0x2e8
[54109.642511] c0 1162 flush_work+0x348/0x40c
[54109.642522] c0 1162 __cancel_work_timer+0x180/0x218
[54109.642544] c0 1162 handle_thermal_trip+0x2c4/0x5a4
[54109.642553] c0 1162 thermal_zone_device_update+0x1b4/0x25c
[54109.642563] c0 1162 thermal_zone_device_check+0x18/0x24
[54109.642574] c0 1162 process_one_work+0x3cc/0x69c
[54109.642583] c0 1162 worker_thread+0x49c/0x7c0
[54109.642593] c0 1162 kthread+0x17c/0x1b0
[54109.642602] c0 1162 ret_from_fork+0x10/0x18
[54109.643051] c0 1162 kworker/u17:2 D 0 16245 2 0x00000000
[54109.643067] c0 1162 Workqueue: thermal_passive_wq thermal_zone_device_check
[54109.643077] c0 1162 Call trace:
[54109.643085] c0 1162 __switch_to+0x138/0x158
[54109.643095] c0 1162 __schedule+0xba4/0x1434
[54109.643104] c0 1162 schedule_timeout+0xa0/0xb28
[54109.643114] c0 1162 wait_for_common+0x138/0x2e8
[54109.643122] c0 1162 flush_work+0x348/0x40c
[54109.643131] c0 1162 __cancel_work_timer+0x180/0x218
[54109.643141] c0 1162 handle_thermal_trip+0x2c4/0x5a4
[54109.643150] c0 1162 thermal_zone_device_update+0x1b4/0x25c
[54109.643159] c0 1162 thermal_zone_device_check+0x18/0x24
[54109.643167] c0 1162 process_one_work+0x3cc/0x69c
[54109.643177] c0 1162 worker_thread+0x49c/0x7c0
[54109.643186] c0 1162 kthread+0x17c/0x1b0
[54109.643195] c0 1162 ret_from_fork+0x10/0x18
[54109.644500] c0 1162 cat D 0 7766 1 0x00000001
[54109.644515] c0 1162 Call trace:
[54109.644524] c0 1162 __switch_to+0x138/0x158
[54109.644536] c0 1162 __schedule+0xba4/0x1434
[54109.644546] c0 1162 schedule_preempt_disabled+0x80/0xb0
[54109.644555] c0 1162 __mutex_lock+0x3a8/0x7f0
[54109.644563] c0 1162 __mutex_lock_slowpath+0x14/0x20
[54109.644575] c0 1162 thermal_zone_get_temp+0x84/0x360
[54109.644586] c0 1162 temp_show+0x30/0x78
[54109.644609] c0 1162 dev_attr_show+0x5c/0xf0
[54109.644628] c0 1162 sysfs_kf_seq_show+0xcc/0x1a4
[54109.644636] c0 1162 kernfs_seq_show+0x48/0x88
[54109.644656] c0 1162 seq_read+0x1f4/0x73c
[54109.644664] c0 1162 kernfs_fop_read+0x84/0x318
[54109.644683] c0 1162 __vfs_read+0x50/0x1bc
[54109.644692] c0 1162 vfs_read+0xa4/0x140
[54109.644701] c0 1162 SyS_read+0xbc/0x144
[54109.644708] c0 1162 el0_svc_naked+0x34/0x38
[54109.845800] c0 1162 D 720.000s 1->7766->7766 cat [panic]
Fixes: 1851799e1d29 ("thermal: Fix use-after-free when unregistering thermal zone device")
Cc: stable@vger.kernel.org
Signed-off-by: Wei Wang <wvw@google.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Now that the thermal framework is built-in, in order to facilitate
thermal mitigation as early as possible in the boot cycle, move the
thermal framework initialization to core_initcall.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/f8ff0ab4a8e9c2eca5a26fb2256365b26cb326ce.1571656015.git.amit.kucheria@linaro.org
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There are no users of netlink messages for thermal inside the kernel.
Remove the code and adjust the documentation.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/8ff02cf62186c7a54fff325fad40a2e9ca3affa6.1571656014.git.amit.kucheria@linaro.org
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When registering a thermal zone device, we currently return -EINVAL in
four cases. This makes it a little hard to debug the real cause of the
failure.
Print some error messages to make it easier for developer to figure out
what happened.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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thermal_zone_device_unregister() cancels the delayed work that polls the
thermal zone, but it does not wait for it to finish. This is racy with
respect to the freeing of the thermal zone device, which can result in a
use-after-free [1].
Fix this by waiting for the delayed work to finish before freeing the
thermal zone device. Note that thermal_zone_device_set_polling() is
never invoked from an atomic context, so it is safe to call
cancel_delayed_work_sync() that can block.
[1]
[ +0.002221] ==================================================================
[ +0.000064] BUG: KASAN: use-after-free in __mutex_lock+0x1076/0x11c0
[ +0.000016] Read of size 8 at addr ffff8881e48e0450 by task kworker/1:0/17
[ +0.000023] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.2.0-rc6-custom-02495-g8e73ca3be4af #1701
[ +0.000010] Hardware name: Mellanox Technologies Ltd. MSN2100-CB2FO/SA001017, BIOS 5.6.5 06/07/2016
[ +0.000016] Workqueue: events_freezable_power_ thermal_zone_device_check
[ +0.000012] Call Trace:
[ +0.000021] dump_stack+0xa9/0x10e
[ +0.000020] print_address_description.cold.2+0x9/0x25e
[ +0.000018] __kasan_report.cold.3+0x78/0x9d
[ +0.000016] kasan_report+0xe/0x20
[ +0.000016] __mutex_lock+0x1076/0x11c0
[ +0.000014] step_wise_throttle+0x72/0x150
[ +0.000018] handle_thermal_trip+0x167/0x760
[ +0.000019] thermal_zone_device_update+0x19e/0x5f0
[ +0.000019] process_one_work+0x969/0x16f0
[ +0.000017] worker_thread+0x91/0xc40
[ +0.000014] kthread+0x33d/0x400
[ +0.000015] ret_from_fork+0x3a/0x50
[ +0.000020] Allocated by task 1:
[ +0.000015] save_stack+0x19/0x80
[ +0.000015] __kasan_kmalloc.constprop.4+0xc1/0xd0
[ +0.000014] kmem_cache_alloc_trace+0x152/0x320
[ +0.000015] thermal_zone_device_register+0x1b4/0x13a0
[ +0.000015] mlxsw_thermal_init+0xc92/0x23d0
[ +0.000014] __mlxsw_core_bus_device_register+0x659/0x11b0
[ +0.000013] mlxsw_core_bus_device_register+0x3d/0x90
[ +0.000013] mlxsw_pci_probe+0x355/0x4b0
[ +0.000014] local_pci_probe+0xc3/0x150
[ +0.000013] pci_device_probe+0x280/0x410
[ +0.000013] really_probe+0x26a/0xbb0
[ +0.000013] driver_probe_device+0x208/0x2e0
[ +0.000013] device_driver_attach+0xfe/0x140
[ +0.000013] __driver_attach+0x110/0x310
[ +0.000013] bus_for_each_dev+0x14b/0x1d0
[ +0.000013] driver_register+0x1c0/0x400
[ +0.000015] mlxsw_sp_module_init+0x5d/0xd3
[ +0.000014] do_one_initcall+0x239/0x4dd
[ +0.000013] kernel_init_freeable+0x42b/0x4e8
[ +0.000012] kernel_init+0x11/0x18b
[ +0.000013] ret_from_fork+0x3a/0x50
[ +0.000015] Freed by task 581:
[ +0.000013] save_stack+0x19/0x80
[ +0.000014] __kasan_slab_free+0x125/0x170
[ +0.000013] kfree+0xf3/0x310
[ +0.000013] thermal_release+0xc7/0xf0
[ +0.000014] device_release+0x77/0x200
[ +0.000014] kobject_put+0x1a8/0x4c0
[ +0.000014] device_unregister+0x38/0xc0
[ +0.000014] thermal_zone_device_unregister+0x54e/0x6a0
[ +0.000014] mlxsw_thermal_fini+0x184/0x35a
[ +0.000014] mlxsw_core_bus_device_unregister+0x10a/0x640
[ +0.000013] mlxsw_devlink_core_bus_device_reload+0x92/0x210
[ +0.000015] devlink_nl_cmd_reload+0x113/0x1f0
[ +0.000014] genl_family_rcv_msg+0x700/0xee0
[ +0.000013] genl_rcv_msg+0xca/0x170
[ +0.000013] netlink_rcv_skb+0x137/0x3a0
[ +0.000012] genl_rcv+0x29/0x40
[ +0.000013] netlink_unicast+0x49b/0x660
[ +0.000013] netlink_sendmsg+0x755/0xc90
[ +0.000013] __sys_sendto+0x3de/0x430
[ +0.000013] __x64_sys_sendto+0xe2/0x1b0
[ +0.000013] do_syscall_64+0xa4/0x4d0
[ +0.000013] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ +0.000017] The buggy address belongs to the object at ffff8881e48e0008
which belongs to the cache kmalloc-2k of size 2048
[ +0.000012] The buggy address is located 1096 bytes inside of
2048-byte region [ffff8881e48e0008, ffff8881e48e0808)
[ +0.000007] The buggy address belongs to the page:
[ +0.000012] page:ffffea0007923800 refcount:1 mapcount:0 mapping:ffff88823680d0c0 index:0x0 compound_mapcount: 0
[ +0.000020] flags: 0x200000000010200(slab|head)
[ +0.000019] raw: 0200000000010200 ffffea0007682008 ffffea00076ab808 ffff88823680d0c0
[ +0.000016] raw: 0000000000000000 00000000000d000d 00000001ffffffff 0000000000000000
[ +0.000007] page dumped because: kasan: bad access detected
[ +0.000012] Memory state around the buggy address:
[ +0.000012] ffff8881e48e0300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ +0.000012] ffff8881e48e0380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ +0.000012] >ffff8881e48e0400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ +0.000008] ^
[ +0.000012] ffff8881e48e0480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ +0.000012] ffff8881e48e0500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ +0.000007] ==================================================================
Fixes: b1569e99c795 ("ACPI: move thermal trip handling to generic thermal layer")
Reported-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Never directly free @dev after calling device_register(), even if it
returned an error! Always use put_device() to give up the reference
initialized. Clean up the rollback block also.
Signed-off-by: Yue Hu <huyue2@yulong.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Now that the governor table is in place and the macro allows to browse the
table, declare the governor so the entry is added in the governor table
in the init section.
The [un]register_thermal_governors function does no longer need to use the
exported [un]register thermal governor's specific function which in turn
call the [un]register_thermal_governor. The governors are fully
self-encapsulated.
The cyclic dependency is no longer needed, remove it.
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
- Remove the 'module' Kconfig option for thermal subsystem framework
because the thermal framework are required to be ready as early as
possible to avoid overheat at boot time (Daniel Lezcano)
- Fix a bug that thermal framework pokes disabled thermal zones upon
resume (Wei Wang)
- A couple of cleanups and trivial fixes on int340x thermal drivers
(Srinivas Pandruvada, Zhang Rui, Sumeet Pawnikar)
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
drivers: thermal: processor_thermal: Downgrade error message
mlxsw: Remove obsolete dependency on THERMAL=m
hwmon/drivers/core: Simplify complex dependency
thermal/drivers/core: Fix typo in the option name
thermal/drivers/core: Remove depends on THERMAL in Kconfig
thermal/drivers/core: Remove module unload code
thermal/drivers/core: Remove the module Kconfig's option
thermal: core: skip update disabled thermal zones after suspend
thermal: make device_register's type argument const
thermal: intel: int340x: processor_thermal_device: simplify to get driver data
thermal/int3403_thermal: favor _TMP instead of PTYP
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thermal_of_cooling_device_register() and thermal_cooling_device_register()
are typically called from driver probe functions, and
thermal_cooling_device_unregister() is called from remove functions. This
makes both a perfect candidate for device managed functions.
Introduce devm_thermal_of_cooling_device_register(). This function can
also be used to replace thermal_cooling_device_register() by passing a NULL
pointer as device node. The new function requires both struct device *
and struct device_node * as parameters since the struct device_node *
parameter is not always identical to dev->of_node.
Don't introduce a device managed remove function since it is not needed
at this point.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Now the thermal core is no longer compiled as a module. Remove the
unloading module code and move the unregister function to the __init
section.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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It is unnecessary to update disabled thermal zones post suspend and
sometimes leads error/warning in bad behaved thermal drivers.
Signed-off-by: Wei Wang <wvw@google.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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...because it can be, the buffer is strlcpy'd into a local buffer in a
thermal struct member.
Signed-off-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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commit ff140fea847e ("Thermal: handle thermal zone device properly
during system sleep") added PM hook to call thermal zone reset during
sleep. However resetting thermal zone will also clear the passive state
and thus cancel the polling queue which leads the passive cooling device
state not being cleared properly after sleep.
thermal_pm_notify => thermal_zone_device_reset set passive to 0
thermal_zone_trip_update will skip update passive as `old_target ==
instance->target'.
monitor_thermal_zone => thermal_zone_device_set_polling will cancel
tz->poll_queue, so the cooling device state will not be changed
afterwards.
Reported-by: Kame Wang <kamewang@google.com>
Signed-off-by: Wei Wang <wvw@google.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Clean unused parameter from internal framework function.
Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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For SMP systems, thermal worker should use power_efficient_wq in power
saving mode, that will make scheduler more flexible on selecting an active
core for running work handler to avoid keeping work handler always
running on a single core, that will save some power.
Even if 'power_efficient_wq' relevant configs are disabled
'system_freezable_power_efficient_wq' is identical to system_freezable_wq,
behavior is unchanged.
Signed-off-by: Jeson Gao <jeson.gao@unisoc.com>
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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This patch fixes use-after-free that was detected by KASAN. The bug is
triggered on a CPUFreq driver module unload by freeing 'cdev' on device
unregister and then using the freed structure during of the cdev's sysfs
data destruction. The solution is to unregister the sysfs at first, then
destroy sysfs data and finally release the cooling device.
Cc: <stable@vger.kernel.org> # v4.17+
Fixes: 8ea229511e06 ("thermal: Add cooling device's statistics in sysfs")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Update licences format for core thermal files.
Signed-off-by: Lina Iyer <ilina@codeaurora.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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The naming isn't consistent across all sysfs callbacks in the thermal
core, some have a short name like type_show() and others have long names
like thermal_cooling_device_weight_show(). This patch tries to make it
consistent by shortening the name of sysfs callbacks.
Some of the sysfs files are named similarly for both thermal zone and
cooling device (like: type) and to avoid name clash between their
show/store routines, the cooling device specific sysfs callbacks are
prefixed with "cdev_".
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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This extends the sysfs interface for thermal cooling devices and exposes
some pretty useful statistics. These statistics have proven to be quite
useful specially while doing benchmarks related to the task scheduler,
where we want to make sure that nothing has disrupted the test,
specially the cooling device which may have put constraints on the CPUs.
The information exposed here tells us to what extent the CPUs were
constrained by the thermal framework.
The write-only "reset" file is used to reset the statistics.
The read-only "time_in_state_ms" file shows the time (in msec) spent by the
device in the respective cooling states, and it prints one line per
cooling state.
The read-only "total_trans" file shows single positive integer value
showing the total number of cooling state transitions the device has
gone through since the time the cooling device is registered or the time
when statistics were reset last.
The read-only "trans_table" file shows a two dimensional matrix, where
an entry <i,j> (row i, column j) represents the number of transitions
from State_i to State_j.
This is how the directory structure looks like for a single cooling
device:
$ ls -R /sys/class/thermal/cooling_device0/
/sys/class/thermal/cooling_device0/:
cur_state max_state power stats subsystem type uevent
/sys/class/thermal/cooling_device0/power:
autosuspend_delay_ms runtime_active_time runtime_suspended_time
control runtime_status
/sys/class/thermal/cooling_device0/stats:
reset time_in_state_ms total_trans trans_table
This is tested on ARM 64-bit Hisilicon hikey620 board running Ubuntu and
ARM 64-bit Hisilicon hikey960 board running Android.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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thermal_zone_device_register()
Reorder error handling code in order to fix some resources leaks in some
cases:
- 'tz' would leak if 'thermal_zone_create_device_groups()' fails
- memory allocated by 'thermal_zone_create_device_groups()' would leak
if 'device_register()' fails
With this patch, we now have 2 error handling paths: one before
'device_register()', and one after it.
This is needed because some resources are released in 'thermal_release()'.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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function
Simplify code by using the new 'thermal_zone_destroy_device_groups()'
helper function.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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The critical shutdown notice string used to have some spaces missing,
which makes it not so pretty.
Add the spaces to satisfy usual English space rules.
Reported-by: Mingcong Bai <jeffbai@aosc.io>
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Making thermal_emergency_poweroff static fixes sparse warning:
drivers/thermal/thermal_core.c:6: warning: symbol
'thermal_emergency_poweroff' was not declared. Should it be static?
Fixes: ef1d87e06ab4 ("thermal: core: Add a back up thermal shutdown mechanism")
Acked-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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orderly_poweroff is triggered when a graceful shutdown
of system is desired. This may be used in many critical states of the
kernel such as when subsystems detects conditions such as critical
temperature conditions. However, in certain conditions in system
boot up sequences like those in the middle of driver probes being
initiated, userspace will be unable to power off the system in a clean
manner and leaves the system in a critical state. In cases like these,
the /sbin/poweroff will return success (having forked off to attempt
powering off the system. However, the system overall will fail to
completely poweroff (since other modules will be probed) and the system
is still functional with no userspace (since that would have shut itself
off).
However, there is no clean way of detecting such failure of userspace
powering off the system. In such scenarios, it is necessary for a backup
workqueue to be able to force a shutdown of the system when orderly
shutdown is not successful after a configurable time period.
Reported-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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thermal_zone_device_check --> thermal_zone_device_update -->
handle_thermal_trip --> handle_critical_trips --> orderly_poweroff
The above sequence happens every 250/500 mS based on the configuration.
The orderly_poweroff function is getting called every 250/500 mS.
With a full fledged file system it takes at least 5-10 Seconds to
power off gracefully.
In that period due to the thermal_zone_device_check triggering
periodically the thermal work queues bombard with
orderly_poweroff calls multiple times eventually leading to
failures in gracefully powering off the system.
Make sure that orderly_poweroff is called only once.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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'ida-conversion' into next
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The device_unregister call in thermal_zone_device_unregister causes the
thermal_zone_device structure to be freed before the call to free the
dynamically allocated attribute groups. This leads to a kernel panic.
Furthermore, the 4 calls to free the trip point attribute structures
occur before the call to unregister the device, leading to a kernel
panic when sysfs attempts to access the attributes to remove them.
Here is an example of a kernel panic when the cpu thermal zones are
removed upon cpu offline:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: strlen+0x0/0x20
<snip>
Call Trace:
? kernfs_name_hash+0x17/0x80
kernfs_find_ns+0x3f/0xd0
kernfs_remove_by_name_ns+0x36/0xa0
remove_files.isra.1+0x36/0x70
sysfs_remove_group+0x44/0x90
sysfs_remove_groups+0x2e/0x50
device_remove_attrs+0x5e/0x90
device_del+0x1ea/0x350
device_unregister+0x1a/0x60
thermal_zone_device_unregister+0x1f2/0x210
pkg_thermal_cpu_offline+0x14f/0x1a0 [x86_pkg_temp_thermal]
? kzalloc.constprop.2+0x10/0x10 [x86_pkg_temp_thermal]
cpuhp_invoke_callback+0x8d/0x3f0
cpuhp_down_callbacks+0x42/0x80
cpuhp_thread_fun+0x8b/0xf0
smpboot_thread_fn+0x110/0x160
kthread+0x101/0x140
? sort_range+0x30/0x30
? kthread_park+0x90/0x90
ret_from_fork+0x25/0x30
This patch moves the kfree calls to clean up the dynamic attributes to
the thermal_class's thermal_zone_device release function.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Tested-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Jacob von Chorus <jacobvonchorus@cwphoto.ca>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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The thermal core does not use the ability to look up pointers by ID, so
convert it from using an IDR to the more space-efficient IDA.
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
- Thermal core code reorganization and cleanup. Two new files are
created for thermal sysfs I/F code and thermal helper functions
(Eduardo Valentin).
- Sanitize hotplug and locking for x86_pkg_temp driver (Thomas
Gleixner)
- Update MAINTAINER file for pwm-fan driver and Samsung thermal driver
(Lukasz Majewski)
- Fix module auto-load for max77620, tango and db8500 thermal driver
(Javier Martinez Canillas)
- Fix a bug that thermal hwmon sysfs I/F returns wrong critical trip
point temperature value (Krzysztof Kozlowski)
- Add Skylake PCH 100 series support for intel_pch_thermal driver
(OGAWA Hirofumi)
- Small fixes and cleanups for platform thermal drivers (Julia Lawall,
Luis Henriques, Leo Yan, Stephen Boyd, Shawn Lin, Javi Merino and
Lukasz Luba)
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (76 commits)
MAINTAINERS: Samsung: Update maintainer for PWM FAN and SAMSUNG THERMAL
thermal/x86 pkg temp: Convert to hotplug state machine
thermal/x86_pkg_temp: Sanitize package management
thermal/x86_pkg_temp: Move work into package struct
thermal/x86_pkg_temp: Move work scheduled flag into package struct
thermal/x86_pkg_temp: Sanitize locking
thermal/x86_pkg_temp: Cleanup code some more
thermal/x86_pkg_temp: Cleanup namespace
thermal/x86_pkg_temp: Get rid of ref counting
thermal/x86_pkg_temp: Sanitize callback (de)initialization
thermal/x86_pkg_temp: Replace open coded cpu search
thermal/x86_pkg_temp: Remove redundant package search
thermal/x86_pkg_temp: Cleanup thermal interrupt handling
thermal: hwmon: Properly report critical temperature in sysfs
devfreq_cooling: pass a pointer to devfreq in the power model callbacks
devfreq_cooling: make the structs devfreq_cooling_xxx visible for all
dt-bindings: rockchip-thermal: fix the misleading description
thermal: rockchip: improve the warning log
thermal: db8500: Fix module autoload
thermal: tango: Fix module autoload
...
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Reorganize code to reflect better placement.
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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As a safety check, this patch changes thermal
core to check for pointer content size, instead of type size,
while allocating memory.
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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Improve description and keep 80 columns limit.
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 several style issues in thermal code code.
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 removing useless returns of void 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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Pass through the code to remove check suggested by
checkpatch.pl (alignment to parenthesis):
CHECK: Alignment should match open 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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Remove style issue:
CHECK: Comparison to NULL could be written "!__find_governor"
+ if (__find_governor(governor->name) == NULL) {
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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Simplify the GPL notice by removing the FSF address.
No need to track FSF location in this 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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comment describing the section with function to handle
registration, unregistration, binding, and unbinding of
thermal devices.
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 marking the power actor 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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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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