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| author |   Helge Deller <deller@gmx.de> | 2022-03-25 14:31:08 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2022-03-29 21:37:12 +0200 |
| commit | 88b3aac6228baaac6a3bcc0808845083b9d9f08f (patch) | |
| tree | 35090d471f95c2b811a24233c753c49241dc8af0 /arch/parisc/Kconfig | |
| parent | parisc: Add PDC locking functions for rendezvous code (diff) | |
| download | linux-dev-88b3aac6228baaac6a3bcc0808845083b9d9f08f.tar.xz linux-dev-88b3aac6228baaac6a3bcc0808845083b9d9f08f.zip | |
parisc: Implement __cpu_die() and __cpu_disable() for CPU hotplugging
Add relevant code to __cpu_die() and __cpu_disable() to finally enable
the CPU hotplugging features. Reset the irq count values in smp_callin()
to zero before bringing up the CPU.
It seems that the firmware may need up to 8 seconds to fully stop a CPU
in which no other PDC calls are allowed to be made. Use a timeout
__cpu_die() to accommodate for this.
Use "chcpu -d 1" to bring CPU1 down, and "chcpu -e 1" to bring it up.
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/Kconfig')
| -rw-r--r-- | arch/parisc/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 590843b8a62e..52e550b45692 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -56,6 +56,7 @@ config PARISC select HAVE_ARCH_TRACEHOOK select HAVE_REGS_AND_STACK_ACCESS_API select GENERIC_SCHED_CLOCK + select GENERIC_IRQ_MIGRATION if SMP select HAVE_UNSTABLE_SCHED_CLOCK if SMP select LEGACY_TIMER_TICK select CPU_NO_EFFICIENT_FFS |