From: Sumit Garg <sumit.g...@linaro.org>
Assign an unused IPI which can be turned as NMI using ipi_nmi framework.
Also, invoke corresponding dynamic IPI setup/teardown APIs.
Signed-off-by: Sumit Garg <sumit.g...@linaro.org>
Reviewed-by: Masayoshi Mizuma <m.miz...@jp.fujitsu.com>
Tested-by: Chen-Yu Tsai <w...@csie.org>
Signed-off-by: Douglas Anderson <diand...@chromium.org>
---
Changes in v8:
- dynamic_ipi_setup() and dynamic_ipi_teardown() no longer take cpu param
arch/arm64/kernel/smp.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 4e8327264255..94ff063527c6 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -43,6 +43,7 @@
#include <asm/daifflags.h>
#include <asm/kvm_mmu.h>
#include <asm/mmu_context.h>
+#include <asm/nmi.h>
#include <asm/numa.h>
#include <asm/processor.h>
#include <asm/smp_plat.h>
@@ -938,6 +939,8 @@ static void ipi_setup(int cpu)
for (i = 0; i < nr_ipi; i++)
enable_percpu_irq(ipi_irq_base + i, 0);
+
+ dynamic_ipi_setup();
}
#ifdef CONFIG_HOTPLUG_CPU
@@ -950,6 +953,8 @@ static void ipi_teardown(int cpu)
for (i = 0; i < nr_ipi; i++)
disable_percpu_irq(ipi_irq_base + i);
+
+ dynamic_ipi_teardown();
}
#endif
@@ -971,6 +976,9 @@ void __init set_smp_ipi_range(int ipi_base, int n)
irq_set_status_flags(ipi_base + i, IRQ_HIDDEN);
}
+ if (n > nr_ipi)
+ set_smp_dynamic_ipi(ipi_base + nr_ipi);
+
ipi_irq_base = ipi_base;
/* Setup the boot CPU immediately */
--
2.40.0.634.g4ca3ef3211-goog
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