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Linux kernel source tree
5e4f009da6
The driver would disable the worker when cpu is being put offline, but
it happens closer to the end of cpufreq_offline(). The function
qcom_lmh_dcvs_poll() can be running in parallel with this, when
policy->cpus already has been updated. Read policy->related_cpus
instead.
[ 37.122433] ------------[ cut here ]------------
[ 37.127225] WARNING: CPU: 0 PID: 187 at drivers/base/arch_topology.c:180 topology_update_thermal_pressure+0xec/0x100
[ 37.138098] Modules linked in:
[ 37.141279] CPU: 0 PID: 187 Comm: kworker/0:3 Tainted: G S 5.17.0-rc6-00389-g37c83d0b8710-dirty #713
[ 37.158306] Workqueue: events qcom_lmh_dcvs_poll
[ 37.163095] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 37.170278] pc : topology_update_thermal_pressure+0xec/0x100
[ 37.176131] lr : topology_update_thermal_pressure+0x20/0x100
[ 37.181977] sp : ffff800009b6bce0
[ 37.185402] x29: ffff800009b6bce0 x28: ffffd87abe92b000 x27: ffff04bd7292e205
[ 37.192792] x26: ffffd87abe930af8 x25: ffffd87abe94e4c8 x24: 0000000000000000
[ 37.200180] x23: ffff04bb01177018 x22: ffff04bb011770c0 x21: ffff04bb01177000
[ 37.207567] x20: ffff04bb0a419000 x19: 00000000000c4e00 x18: 0000000000000000
[ 37.214954] x17: 000000040044ffff x16: 004000b2b5503510 x15: 0000006aaa1326d2
[ 37.222333] x14: 0000000000000232 x13: 0000000000000001 x12: 0000000000000040
[ 37.229718] x11: ffff04bb00400000 x10: 968f57bd39f701c8 x9 : ffff04bb0acc8674
[ 37.237095] x8 : fefefefefefefeff x7 : 0000000000000018 x6 : ffffd87abd90092c
[ 37.244478] x5 : 0000000000000016 x4 : 0000000000000000 x3 : 0000000000000100
[ 37.251852] x2 : ffff04bb0a419020 x1 : 0000000000000100 x0 : 0000000000000100
[ 37.259235] Call trace:
[ 37.261771] topology_update_thermal_pressure+0xec/0x100
[ 37.267266] qcom_lmh_dcvs_poll+0xbc/0x154
[ 37.271505] process_one_work+0x288/0x69c
[ 37.275654] worker_thread+0x74/0x470
[ 37.279450] kthread+0xfc/0x100
[ 37.282712] ret_from_fork+0x10/0x20
[ 37.286417] irq event stamp: 74
[ 37.289664] hardirqs last enabled at (73): [<ffffd87abdd78af4>] _raw_spin_unlock_irq+0x44/0x80
[ 37.298632] hardirqs last disabled at (74): [<ffffd87abdd71fc0>] __schedule+0x710/0xa10
[ 37.306885] softirqs last enabled at (58): [<ffffd87abcc90410>] _stext+0x410/0x588
[ 37.314778] softirqs last disabled at (51): [<ffffd87abcd1bf68>] __irq_exit_rcu+0x158/0x174
[ 37.323386] ---[ end trace 0000000000000000 ]---
Fixes:
|
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.