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authorChristoph Hellwig <hch@lst.de>2018-08-04 11:23:13 +0300
committerPalmer Dabbelt <palmer@sifive.com>2018-08-13 18:31:30 +0300
commitb9d5535746e306a456691177228a08f04b923a7b (patch)
treee30a22b55379bd8019eee87c48d9b9f8bf9e1fc9 /arch/riscv
parentb9490350f751e5d17a24d0ae5af1f9e7f55c7c31 (diff)
downloadlinux-b9d5535746e306a456691177228a08f04b923a7b.tar.xz
RISC-V: simplify software interrupt / IPI code
Rename handle_ipi to riscv_software_interrupt, drop the unused return value and move the prototype to irq.h together with riscv_timer_interupt. This allows simplifying the upcoming interrupt handling support. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch/riscv')
-rw-r--r--arch/riscv/include/asm/irq.h1
-rw-r--r--arch/riscv/include/asm/smp.h3
-rw-r--r--arch/riscv/kernel/smp.c6
3 files changed, 3 insertions, 7 deletions
diff --git a/arch/riscv/include/asm/irq.h b/arch/riscv/include/asm/irq.h
index 4dee9d4c13c0..c871661c9df4 100644
--- a/arch/riscv/include/asm/irq.h
+++ b/arch/riscv/include/asm/irq.h
@@ -22,6 +22,7 @@
#define INTERRUPT_CAUSE_EXTERNAL 9
void riscv_timer_interrupt(void);
+void riscv_software_interrupt(void);
#include <asm-generic/irq.h>
diff --git a/arch/riscv/include/asm/smp.h b/arch/riscv/include/asm/smp.h
index 85e4220839b0..c9395fff246f 100644
--- a/arch/riscv/include/asm/smp.h
+++ b/arch/riscv/include/asm/smp.h
@@ -44,9 +44,6 @@ void arch_send_call_function_single_ipi(int cpu);
*/
#define raw_smp_processor_id() (*((int*)((char*)get_current() + TASK_TI_CPU)))
-/* Interprocessor interrupt handler */
-irqreturn_t handle_ipi(void);
-
#endif /* CONFIG_SMP */
#endif /* _ASM_RISCV_SMP_H */
diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c
index 6d3962435720..906fe21ea21b 100644
--- a/arch/riscv/kernel/smp.c
+++ b/arch/riscv/kernel/smp.c
@@ -45,7 +45,7 @@ int setup_profiling_timer(unsigned int multiplier)
return -EINVAL;
}
-irqreturn_t handle_ipi(void)
+void riscv_software_interrupt(void)
{
unsigned long *pending_ipis = &ipi_data[smp_processor_id()].bits;
@@ -60,7 +60,7 @@ irqreturn_t handle_ipi(void)
ops = xchg(pending_ipis, 0);
if (ops == 0)
- return IRQ_HANDLED;
+ return;
if (ops & (1 << IPI_RESCHEDULE))
scheduler_ipi();
@@ -73,8 +73,6 @@ irqreturn_t handle_ipi(void)
/* Order data access and bit testing. */
mb();
}
-
- return IRQ_HANDLED;
}
static void