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Linux kernel source tree
f16beaaee2
Annotate LMH IRQs with lockdep classes so that the lockdep doesn't
report possible recursive locking issue between LMH and GIC interrupts.
For the reference:
CPU0
----
lock(&irq_desc_lock_class);
lock(&irq_desc_lock_class);
*** DEADLOCK ***
Call trace:
dump_backtrace+0x98/0xf0
show_stack+0x18/0x24
dump_stack_lvl+0x90/0xd0
dump_stack+0x18/0x24
print_deadlock_bug+0x258/0x348
__lock_acquire+0x1078/0x1f44
lock_acquire+0x1fc/0x32c
_raw_spin_lock_irqsave+0x60/0x88
__irq_get_desc_lock+0x58/0x98
enable_irq+0x38/0xa0
lmh_enable_interrupt+0x2c/0x38
irq_enable+0x40/0x8c
__irq_startup+0x78/0xa4
irq_startup+0x78/0x168
__enable_irq+0x70/0x7c
enable_irq+0x4c/0xa0
qcom_cpufreq_ready+0x20/0x2c
cpufreq_online+0x2a8/0x988
cpufreq_add_dev+0x80/0x98
subsys_interface_register+0x104/0x134
cpufreq_register_driver+0x150/0x234
qcom_cpufreq_hw_driver_probe+0x2a8/0x388
platform_probe+0x68/0xc0
really_probe+0xbc/0x298
__driver_probe_device+0x78/0x12c
driver_probe_device+0x3c/0x160
__device_attach_driver+0xb8/0x138
bus_for_each_drv+0x84/0xe0
__device_attach+0x9c/0x188
device_initial_probe+0x14/0x20
bus_probe_device+0xac/0xb0
deferred_probe_work_func+0x8c/0xc8
process_one_work+0x20c/0x62c
worker_thread+0x1bc/0x36c
kthread+0x120/0x124
ret_from_fork+0x10/0x20
Fixes:
|
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| 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 reStructuredText 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.