mirror-linux/include
Josh Poimboeuf e3ff7c609f livepatch,sched: Add livepatch task switching to cond_resched()
There have been reports [1][2] of live patches failing to complete
within a reasonable amount of time due to CPU-bound kthreads.

Fix it by patching tasks in cond_resched().

There are four different flavors of cond_resched(), depending on the
kernel configuration.  Hook into all of them.

A more elegant solution might be to use a preempt notifier.  However,
non-ORC unwinders can't unwind a preempted task reliably.

[1] https://lore.kernel.org/lkml/20220507174628.2086373-1-song@kernel.org/
[2] https://lkml.kernel.org/lkml/20230120-vhost-klp-switching-v1-0-7c2b65519c43@kernel.org

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Tested-by: Seth Forshee (DigitalOcean) <sforshee@kernel.org>
Link: https://lore.kernel.org/r/4ae981466b7814ec221014fc2554b2f86f3fb70b.1677257135.git.jpoimboe@kernel.org
2023-03-22 17:09:28 +01:00
..
acpi ACPI: x86: Introduce an acpi_quirk_skip_gpio_event_handlers() helper 2023-03-07 14:15:10 +01:00
asm-generic Driver core changes for 6.3-rc1 2023-02-24 12:58:55 -08:00
clocksource
crypto
drm drm/bridge: Fix returned array size name for atomic_get_input_bus_fmts kdoc 2023-03-15 10:06:06 +01:00
dt-bindings ARM: SoC drivers for 6.3 2023-02-27 10:04:49 -08:00
keys
kunit
kvm KVM: arm64: timers: Convert per-vcpu virtual offset to a global value 2023-03-11 02:00:40 -08:00
linux livepatch,sched: Add livepatch task switching to cond_resched() 2023-03-22 17:09:28 +01:00
math-emu
media media updates for v6.3-rc1 2023-02-26 11:47:26 -08:00
memory
misc
net xdp: add xdp_set_features_flag utility routine 2023-03-10 21:33:47 -08:00
pcmcia
ras
rdma
rv
scsi scsi: core: Add BLIST_NO_VPD_SIZE for some VDASD 2023-03-09 20:57:58 -05:00
soc
sound sound fixes for 6.3-rc1 2023-03-04 10:53:59 -08:00
target
trace f2fs-for-6.3-rc1 2023-02-27 16:18:51 -08:00
uapi Including fixes from netfilter, wifi and ipsec. 2023-03-17 13:31:16 -07:00
ufs SCSI misc on 20230303 2023-03-03 14:41:50 -08:00
vdso
video
xen xen: branch for v6.3-rc3 2023-03-17 10:45:49 -07:00