acrn-kernel/drivers/base
Joel Fernandes (Google) 3e7b8a723b tick/nohz: Fix cpu_is_hotpluggable() by checking with nohz subsystem
commit 58d7668242 upstream.

For CONFIG_NO_HZ_FULL systems, the tick_do_timer_cpu cannot be offlined.
However, cpu_is_hotpluggable() still returns true for those CPUs. This causes
torture tests that do offlining to end up trying to offline this CPU causing
test failures. Such failure happens on all architectures.

Fix the repeated error messages thrown by this (even if the hotplug errors are
harmless) by asking the opinion of the nohz subsystem on whether the CPU can be
hotplugged.

[ Apply Frederic Weisbecker feedback on refactoring tick_nohz_cpu_down(). ]

For drivers/base/ portion:
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Zhouyi Zhou <zhouzhouyi@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: rcu <rcu@vger.kernel.org>
Cc: stable@vger.kernel.org
Fixes: 2987557f52 ("driver-core/cpu: Expose hotpluggability to the rest of the kernel")
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-05-11 23:03:01 +09:00
..
firmware_loader
power PM: domains: fix memory leak with using debugfs_lookup() 2023-03-10 09:33:52 +01:00
regmap regmap: apply reg_base and reg_downshift for single register ops 2023-03-10 09:33:19 +01:00
test
Kconfig
Makefile
arch_numa.c
arch_topology.c
attribute_container.c
auxiliary.c
base.h
bus.c
cacheinfo.c cacheinfo: Fix shared_cpu_map to handle shared caches at different levels 2023-03-11 13:55:34 +01:00
class.c
component.c drivers: base: component: fix memory leak with using debugfs_lookup() 2023-03-11 13:55:39 +01:00
container.c
core.c driver core: fw_devlink: Avoid spurious error message 2023-03-10 09:34:01 +01:00
cpu.c tick/nohz: Fix cpu_is_hotpluggable() by checking with nohz subsystem 2023-05-11 23:03:01 +09:00
dd.c driver core: Don't require dynamic_debug for initcall_debug probe timing 2023-05-01 08:26:27 +09:00
devcoredump.c
devres.c
devtmpfs.c
driver.c
firmware.c
hypervisor.c
init.c
isa.c
map.c
memory.c
module.c
node.c
physical_location.c driver core: location: Free struct acpi_pld_info *pld before return false 2023-03-10 09:33:33 +01:00
physical_location.h
pinctrl.c
platform-msi.c
platform.c
property.c
soc.c
swnode.c
syscore.c
topology.c
trace.c
trace.h
transport_class.c drivers: base: transport_class: fix resource leak when transport_add_device() fails 2023-03-10 09:33:34 +01:00