diff options
| author | Paul Burton <paulburton@kernel.org> | 2024-10-28 18:59:24 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-10-30 15:41:18 +0100 |
| commit | d9e2ed610a6094534d13ea347c7b7a5bd7ce4ee5 (patch) | |
| tree | adc2a3e8da43e8a7bc3154a602e1ca945beac399 /drivers/irqchip/irq-mips-gic.c | |
| parent | 496461050b74d44a2adb39511403a36c9a555bc7 (diff) | |
irqchip/mips-gic: Support multi-cluster in for_each_online_cpu_gic()
Use CM's GCR_CL_REDIRECT register to access registers in remote clusters,
so that users of gic_with_each_online_cpu() gains support for multi-cluster
without further changes.
Signed-off-by: Paul Burton <paulburton@kernel.org>
Signed-off-by: Chao-ying Fu <cfu@wavecomp.com>
Signed-off-by: Dragan Mladjenovic <dragan.mladjenovic@syrmia.com>
Signed-off-by: Aleksandar Rikalo <arikalo@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Link: https://lore.kernel.org/all/20241028175935.51250-3-arikalo@gmail.com
Diffstat (limited to 'drivers/irqchip/irq-mips-gic.c')
| -rw-r--r-- | drivers/irqchip/irq-mips-gic.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c index 6c7a7d2f0438..29bdfdce2123 100644 --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -88,6 +88,12 @@ static int __gic_with_next_online_cpu(int prev) return cpu; } +static inline void gic_unlock_cluster(void) +{ + if (mips_cps_multicluster_cpus()) + mips_cm_unlock_other(); +} + /** * for_each_online_cpu_gic() - Iterate over online CPUs, access local registers * @cpu: An integer variable to hold the current CPU number @@ -102,6 +108,7 @@ static int __gic_with_next_online_cpu(int prev) guard(raw_spinlock_irqsave)(gic_lock); \ for ((cpu) = __gic_with_next_online_cpu(-1); \ (cpu) < nr_cpu_ids; \ + gic_unlock_cluster(), \ (cpu) = __gic_with_next_online_cpu(cpu)) static void gic_clear_pcpu_masks(unsigned int intr) |