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| 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 /arch/x86/include/asm/smp.h | |
| parent | x86/topology: Remove CPU0 hotplug option (diff) | |
| download | linux-5475abbde77f6d78a052a81e5d5de70e59f7181e.tar.gz linux-5475abbde77f6d78a052a81e5d5de70e59f7181e.tar.bz2 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 'arch/x86/include/asm/smp.h')
| -rw-r--r-- | arch/x86/include/asm/smp.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index 4e91054c84be..0ec4c64a1981 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -130,7 +130,6 @@ void native_play_dead(void); void play_dead_common(void); void wbinvd_on_cpu(int cpu); int wbinvd_on_all_cpus(void); -void cond_wakeup_cpu0(void); void native_smp_send_reschedule(int cpu); void native_send_call_func_ipi(const struct cpumask *mask); |