IRQ_S_EXT          73 arch/riscv/include/asm/csr.h #define SIE_SEIE		(_AC(0x1, UL) << IRQ_S_EXT)
IRQ_S_EXT          19 arch/riscv/kernel/irq.c #define INTERRUPT_CAUSE_EXTERNAL	IRQ_S_EXT
IRQ_S_EXT         256 drivers/irqchip/irq-sifive-plic.c 		if (parent.args[0] != IRQ_S_EXT)