diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2023-05-12 23:07:06 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-05-15 13:44:49 +0200 |
| commit | 5475abbde77f6d78a052a81e5d5de70e59f7181e (patch) | |
| tree | 73e7002ffd92ea4aab6aa4ef17fefd6c04a7f950 /drivers/acpi/processor_idle.c | |
| parent | x86/topology: Remove CPU0 hotplug option (diff) | |
| download | linux-5475abbde77f6d78a052a81e5d5de70e59f7181e.tar.xz linux-5475abbde77f6d78a052a81e5d5de70e59f7181e.zip | |
x86/smpboot: Remove the CPU0 hotplug kludge
This was introduced with commit e1c467e69040 ("x86, hotplug: Wake up CPU0
via NMI instead of INIT, SIPI, SIPI") to eventually support physical
hotplug of CPU0:
"We'll change this code in the future to wake up hard offlined CPU0 if
real platform and request are available."
11 years later this has not happened and physical hotplug is not officially
supported. Remove the cruft.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Tested-by: Helge Deller <deller@gmx.de> # parisc
Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com> # Steam Deck
Link: https://lore.kernel.org/r/20230512205255.768845190@linutronix.de
Diffstat (limited to 'drivers/acpi/processor_idle.c')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 9718d07cc2a2..dc615ef6550a 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -597,10 +597,6 @@ static int acpi_idle_play_dead(struct cpuidle_device *dev, int index) io_idle(cx->address); } else return -ENODEV; - -#if defined(CONFIG_X86) && defined(CONFIG_HOTPLUG_CPU) - cond_wakeup_cpu0(); -#endif } /* Never reached */ |