From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx>
Running work in hardware interrupt context for csky. Implement:
- arch_irq_work_raise()
- arch_irq_work_has_interrupt()
Signed-off-by: Guo Ren <guoren@xxxxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
---
arch/csky/include/asm/irq_work.h | 11 +++++++++++
arch/csky/kernel/smp.c | 12 ++++++++++++
2 files changed, 23 insertions(+)
create mode 100644 arch/csky/include/asm/irq_work.h
diff --git a/arch/csky/include/asm/irq_work.h b/arch/csky/include/asm/irq_work.h
new file mode 100644
index 00000000..33aaf39
--- /dev/null
+++ b/arch/csky/include/asm/irq_work.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __ASM_CSKY_IRQ_WORK_H
+#define __ASM_CSKY_IRQ_WORK_H
+
+static inline bool arch_irq_work_has_interrupt(void)
+{
+ return true;
+}
+extern void arch_irq_work_raise(void);
+#endif /* __ASM_CSKY_IRQ_WORK_H */
diff --git a/arch/csky/kernel/smp.c b/arch/csky/kernel/smp.c
index 1945fb2..60f2ab1 100644
--- a/arch/csky/kernel/smp.c
+++ b/arch/csky/kernel/smp.c
@@ -12,6 +12,7 @@
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/irq.h>
+#include <linux/irq_work.h>
#include <linux/irqdomain.h>
#include <linux/of.h>
#include <linux/sched/task_stack.h>
@@ -35,6 +36,7 @@ enum ipi_message_type {
IPI_EMPTY,
IPI_RESCHEDULE,
IPI_CALL_FUNC,
+ IPI_IRQ_WORK,
IPI_MAX
};
@@ -53,6 +55,9 @@ static irqreturn_t handle_ipi(int irq, void *dev)
if (ops & (1 << IPI_CALL_FUNC))
generic_smp_call_function_interrupt();
+ if (ops & (1 << IPI_IRQ_WORK))
+ irq_work_run();
+
BUG_ON((ops >> IPI_MAX) != 0);
}
@@ -108,6 +113,13 @@ void smp_send_reschedule(int cpu)
send_ipi_message(cpumask_of(cpu), IPI_RESCHEDULE);
}
+#ifdef CONFIG_IRQ_WORK
+void arch_irq_work_raise(void)
+{
+ send_ipi_message(cpumask_of(smp_processor_id()), IPI_IRQ_WORK);
+}
+#endif
+
void __init smp_prepare_boot_cpu(void)
{
}
--
2.7.4
