ipi_write_action
ipi_write_action(cpu_logical_map(cpu), (u32)action);
ipi_write_action(cpu_logical_map(i), (u32)action);
ipi_write_action = csr_ipi_write_action;
ipi_write_action = legacy_ipi_write_action;
ipi_write_action(cpu_logical_map(cpu), (u32)action);
static void (*ipi_write_action)(int cpu, u32 action);
ipi_write_action(cpu_logical_map(i), (u32)action);