ARC: [SMP] cpumask not needed in IPI send path
The current IPI sending callstack needlessly involves cpumask.
arch_send_call_function_single_ipi(cpu) / smp_send_reschedule(cpu)
ipi_send_msg(cpumask_of(cpu)) --> [cpu to cpumask]
plat_smp_ops.ipi_send(callmap)
for_each_cpu(callmap) --> [cpuask to cpu]
do_plat_specific_ipi_PER_CPU
Given that current backends are not capable of 1:N IPIs, lets simplify
the interface for now, by keeping "a" cpu all along.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/include/asm/smp.h b/arch/arc/include/asm/smp.h
index eefc29f..9b40e3b 100644
--- a/arch/arc/include/asm/smp.h
+++ b/arch/arc/include/asm/smp.h
@@ -46,13 +46,13 @@
*
* @info: SoC SMP specific info for /proc/cpuinfo etc
* @cpu_kick: For Master to kickstart a cpu (optionally at a PC)
- * @ipi_send: To send IPI to a @cpumask
+ * @ipi_send: To send IPI to a @cpu
* @ips_clear: To clear IPI received by @cpu at @irq
*/
struct plat_smp_ops {
const char *info;
void (*cpu_kick)(int cpu, unsigned long pc);
- void (*ipi_send)(void *callmap);
+ void (*ipi_send)(int cpu);
void (*ipi_clear)(int cpu, int irq);
};