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authorGuo Ren <guoren@linux.alibaba.com>2020-07-30 17:05:51 +0000
committerGuo Ren <guoren@linux.alibaba.com>2020-07-31 01:55:46 +0000
commit2c81b0768297fb2fb4d2f39eac49a55f3598375b (patch)
treecc7732e9f215ed018c13de737452eba4a488ed37 /arch/csky/kernel
parent667b9324bd83d79abd64ee21bf5fa17ccc9ec246 (diff)
csky: Add irq_work support
Running work in hardware interrupt context for csky. Implement: - arch_irq_work_raise() - arch_irq_work_has_interrupt() Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Cc: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/csky/kernel')
-rw-r--r--arch/csky/kernel/smp.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/csky/kernel/smp.c b/arch/csky/kernel/smp.c
index 1945fb29007d..60f2ab1c5865 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)
{
}