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| author | Thomas Gleixner <tglx@linutronix.de> | 2023-05-12 23:07:32 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-05-15 13:44:57 +0200 |
| commit | 5490e769cdc7230cb93e804e656cce19d6c82253 (patch) | |
| tree | 83d03321dceb828279f331c555431c117ccccb91 /arch/arm/kernel | |
| parent | cpu/hotplug: Remove cpu_report_state() and related unused cruft (diff) | |
| download | linux-5490e769cdc7230cb93e804e656cce19d6c82253.tar.xz linux-5490e769cdc7230cb93e804e656cce19d6c82253.zip | |
ARM: smp: Switch to hotplug core state synchronization
Switch to the CPU hotplug core state tracking and synchronization
mechanim. No functional change intended.
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/20230512205256.635326070@linutronix.de
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/smp.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 87f8d0e5e314..6756203e45f3 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -288,15 +288,11 @@ int __cpu_disable(void) } /* - * called on the thread which is asking for a CPU to be shutdown - - * waits until shutdown has completed, or it is timed out. + * called on the thread which is asking for a CPU to be shutdown after the + * shutdown completed. */ -void __cpu_die(unsigned int cpu) +void arch_cpuhp_cleanup_dead_cpu(unsigned int cpu) { - if (!cpu_wait_death(cpu, 5)) { - pr_err("CPU%u: cpu didn't die\n", cpu); - return; - } pr_debug("CPU%u: shutdown\n", cpu); clear_tasks_mm_cpumask(cpu); @@ -336,11 +332,11 @@ void __noreturn arch_cpu_idle_dead(void) flush_cache_louis(); /* - * Tell __cpu_die() that this CPU is now safe to dispose of. Once - * this returns, power and/or clocks can be removed at any point - * from this CPU and its cache by platform_cpu_kill(). + * Tell cpuhp_bp_sync_dead() that this CPU is now safe to dispose + * of. Once this returns, power and/or clocks can be removed at + * any point from this CPU and its cache by platform_cpu_kill(). */ - (void)cpu_report_death(); + cpuhp_ap_report_dead(); /* * Ensure that the cache lines associated with that completion are |