Commit 223bfc4d authored by Samuel Holland's avatar Samuel Holland Committed by Paul Walmsley
Browse files

riscv: Register IPI IRQs with unique names 



This allows different IPIs to be distinguished in tracing output.

Signed-off-by: default avatarSamuel Holland <samuel.holland@sifive.com>
Link: https://lore.kernel.org/r/20251016003244.3910332-1-samuel.holland@sifive.com


Signed-off-by: default avatarPaul Walmsley <pjw@kernel.org>
parent e7b969cb

arch/riscv/kernel/smp.c

+12 −12
Original line number Diff line number Diff line
@@ -40,6 +40,17 @@ enum ipi_message_type { 
	IPI_MAX

};



static const char * const ipi_names[] = {

	[IPI_RESCHEDULE]	= "Rescheduling interrupts",

	[IPI_CALL_FUNC]		= "Function call interrupts",

	[IPI_CPU_STOP]		= "CPU stop interrupts",

	[IPI_CPU_CRASH_STOP]	= "CPU stop (for crash dump) interrupts",

	[IPI_IRQ_WORK]		= "IRQ work interrupts",

	[IPI_TIMER]		= "Timer broadcast interrupts",

	[IPI_CPU_BACKTRACE]     = "CPU backtrace interrupts",

	[IPI_KGDB_ROUNDUP]	= "KGDB roundup interrupts",

};



unsigned long __cpuid_to_hartid_map[NR_CPUS] __ro_after_init = {

	[0 ... NR_CPUS-1] = INVALID_HARTID

};
@@ -199,7 +210,7 @@ void riscv_ipi_set_virq_range(int virq, int nr) 
	/* Request IPIs */

	for (i = 0; i < nr_ipi; i++) {

		err = request_percpu_irq(ipi_virq_base + i, handle_IPI,

					 "IPI", &ipi_dummy_dev);

					 ipi_names[i], &ipi_dummy_dev);

		WARN_ON(err);



		ipi_desc[i] = irq_to_desc(ipi_virq_base + i);
@@ -210,17 +221,6 @@ void riscv_ipi_set_virq_range(int virq, int nr) 
	riscv_ipi_enable();

}



static const char * const ipi_names[] = {

	[IPI_RESCHEDULE]	= "Rescheduling interrupts",

	[IPI_CALL_FUNC]		= "Function call interrupts",

	[IPI_CPU_STOP]		= "CPU stop interrupts",

	[IPI_CPU_CRASH_STOP]	= "CPU stop (for crash dump) interrupts",

	[IPI_IRQ_WORK]		= "IRQ work interrupts",

	[IPI_TIMER]		= "Timer broadcast interrupts",

	[IPI_CPU_BACKTRACE]     = "CPU backtrace interrupts",

	[IPI_KGDB_ROUNDUP]	= "KGDB roundup interrupts",

};



void show_ipi_stats(struct seq_file *p, int prec)

{

	unsigned int cpu, i;