diff options
| author | Prarit Bhargava <prarit@redhat.com> | 2021-01-05 10:16:27 -0500 |
|---|---|---|
| committer | Matt Turner <mattst88@gmail.com> | 2021-07-25 22:33:03 -0700 |
| commit | caace6ca4e06f09413fb8f8a63319594cfb7d47d (patch) | |
| tree | 995b1ae5c9a0a7f686b8c4cc7d2321908eed0e7b /arch/alpha/configs | |
| parent | f0443da1d8560f4c664ab0f9a900ed69e9aaeb14 (diff) | |
| download | linux-stable-caace6ca4e06f09413fb8f8a63319594cfb7d47d.tar.gz linux-stable-caace6ca4e06f09413fb8f8a63319594cfb7d47d.tar.bz2 linux-stable-caace6ca4e06f09413fb8f8a63319594cfb7d47d.zip | |
alpha: Send stop IPI to send to online CPUs
This issue was noticed while debugging a shutdown issue where some
secondary CPUs are not being shutdown correctly. A fix for that [1] requires
that secondary cpus be offlined using the cpu_online_mask so that the
stop operation is a no-op if CPU HOTPLUG is disabled. I, like the author in
[1] looked at the architectures and found that alpha is one of two
architectures that executes smp_send_stop() on all possible CPUs.
On alpha, smp_send_stop() sends an IPI to all possible CPUs but only needs
to send them to online CPUs.
Send the stop IPI to only the online CPUs.
[1] https://lkml.org/lkml/2020/1/10/250
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Diffstat (limited to 'arch/alpha/configs')
0 files changed, 0 insertions, 0 deletions