[PATCH v3 1/5] cobalt: Prepare for new signature of __request_percpu_irq() in 6.19

The signature of __request_percpu_irq() got one additional affinity
parameter in 6.19 and 7.0 will remove the function entirely.

Dovetail 6.19 will introduce a new dovetail specific service called
request_percpu_irq_affinity_flags() that allows us to set flags and
affinity at the same time.

It might happen that older Dovetail versions get the new API via
backports, so the re-#definement for older kernels might get
obsolete earlier than dropping support for Dovetail < 6.19.

Signed-off-by: Florian Bezdeka <[email protected]>
---
 include/cobalt/kernel/dovetail/pipeline/pipeline.h   | 8 +++-----
 include/cobalt/kernel/dovetail/pipeline/sirq.h       | 8 +++-----
 kernel/cobalt/dovetail/tick.c                        | 7 +++----
 kernel/cobalt/include/asm-generic/xenomai/wrappers.h | 9 +++++++++
 4 files changed, 18 insertions(+), 14 deletions(-)

diff --git a/include/cobalt/kernel/dovetail/pipeline/pipeline.h b/include/cobalt/kernel/dovetail/pipeline/pipeline.h
index 2e6e66a2d6d4dbf407d4ce42fff8b84acc2931d0..19d616a421d2ebc83d21d816bf00eead298b8def 100644
--- a/include/cobalt/kernel/dovetail/pipeline/pipeline.h
+++ b/include/cobalt/kernel/dovetail/pipeline/pipeline.h
@@ -42,11 +42,9 @@ static inline int pipeline_request_resched_ipi(void)
 		return 0;
 
 	/* Trap the out-of-band rescheduling interrupt. */
-	return __request_percpu_irq(RESCHEDULE_OOB_IPI,
-			pipeline_reschedule_ipi_handler,
-			IRQF_OOB,
-			"Xenomai reschedule",
-			&cobalt_machine_cpudata);
+	return request_percpu_irq_affinity_flags(
+		RESCHEDULE_OOB_IPI, pipeline_reschedule_ipi_handler, IRQF_OOB,
+		"Xenomai reschedule", NULL, &cobalt_machine_cpudata);
 }
 
 static inline void pipeline_free_resched_ipi(void)
diff --git a/include/cobalt/kernel/dovetail/pipeline/sirq.h b/include/cobalt/kernel/dovetail/pipeline/sirq.h
index 1da9d13b217081ba52ef0444b60d236ddb9c8a9e..13eb020ac7c17ec06c52b43406cc68aa7f3e52a1 100644
--- a/include/cobalt/kernel/dovetail/pipeline/sirq.h
+++ b/include/cobalt/kernel/dovetail/pipeline/sirq.h
@@ -29,11 +29,9 @@ int pipeline_create_inband_sirq(irqreturn_t (*handler)(int irq, void *dev_id))
 	if (sirq == 0)
 		return -EAGAIN;
 
-	ret = __request_percpu_irq(sirq,
-			handler,
-			IRQF_NO_THREAD,
-			"Inband sirq",
-			&cobalt_machine_cpudata);
+	ret = request_percpu_irq_affinity_flags(sirq, handler, IRQF_NO_THREAD,
+						"Inband sirq", NULL,
+						&cobalt_machine_cpudata);
 
 	if (ret) {
 		irq_dispose_mapping(sirq);
diff --git a/kernel/cobalt/dovetail/tick.c b/kernel/cobalt/dovetail/tick.c
index 873b62471eac758fba5b86fa36b8265b6284dc87..7ebce1991fd35d9e0cb45e05c55f3b8e5ef6baf2 100644
--- a/kernel/cobalt/dovetail/tick.c
+++ b/kernel/cobalt/dovetail/tick.c
@@ -153,10 +153,9 @@ int pipeline_install_tick_proxy(void)
 	 * CPUs.
 	 */
 	if (num_possible_cpus() > 1) {
-		ret = __request_percpu_irq(TIMER_OOB_IPI,
-					tick_ipi_handler,
-					IRQF_OOB, "Xenomai timer IPI",
-					&cobalt_machine_cpudata);
+		ret = request_percpu_irq_affinity_flags(
+			TIMER_OOB_IPI, tick_ipi_handler, IRQF_OOB,
+			"Xenomai timer IPI", NULL, &cobalt_machine_cpudata);
 		if (ret)
 			return ret;
 	}
diff --git a/kernel/cobalt/include/asm-generic/xenomai/wrappers.h b/kernel/cobalt/include/asm-generic/xenomai/wrappers.h
index a68c3b1951d1a4a90c032a9a132c920b841cda49..838085d338b51a4fdd89218aa512de8d60a853a0 100644
--- a/kernel/cobalt/include/asm-generic/xenomai/wrappers.h
+++ b/kernel/cobalt/include/asm-generic/xenomai/wrappers.h
@@ -71,4 +71,13 @@
 #define timer_container_of	from_timer
 #endif
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 19, 0)
+#define request_percpu_irq_affinity_flags(irq, handler, flags, devname,        \
+					  affinity, dev_id)                    \
+	({                                                                     \
+		WARN_ON_ONCE(affinity);                                        \
+		__request_percpu_irq(irq, handler, flags, devname, dev_id);    \
+	})
+#endif
+
 #endif /* _COBALT_ASM_GENERIC_WRAPPERS_H */

-- 
2.53.0