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authorHelge Deller <deller@gmx.de>2022-03-25 16:31:08 +0300
committerHelge Deller <deller@gmx.de>2022-03-29 22:37:12 +0300
commit88b3aac6228baaac6a3bcc0808845083b9d9f08f (patch)
tree35090d471f95c2b811a24233c753c49241dc8af0 /arch/parisc/Kconfig
parentdb2b0d76cdc4e781d32bf26d0c649ca2fe608c4e (diff)
downloadlinux-88b3aac6228baaac6a3bcc0808845083b9d9f08f.tar.xz
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/Kconfig1
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