[rtems commit] leon, irq: single CPU SMP configuration does not need IPI ISR
Daniel Hellstrom
danielh at rtems.org
Sun May 14 10:34:28 UTC 2017
Module: rtems
Branch: master
Commit: 011efee8139a5ec526c549704c78372b2205a92f
Changeset: http://git.rtems.org/rtems/commit/?id=011efee8139a5ec526c549704c78372b2205a92f
Author: Daniel Hellstrom <daniel at gaisler.com>
Date: Tue Apr 25 09:10:03 2017 +0200
leon, irq: single CPU SMP configuration does not need IPI ISR
---
c/src/lib/libbsp/sparc/shared/irq/irq-shared.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/c/src/lib/libbsp/sparc/shared/irq/irq-shared.c b/c/src/lib/libbsp/sparc/shared/irq/irq-shared.c
index 174324f..f219e49 100644
--- a/c/src/lib/libbsp/sparc/shared/irq/irq-shared.c
+++ b/c/src/lib/libbsp/sparc/shared/irq/irq-shared.c
@@ -47,9 +47,14 @@ void BSP_shared_interrupt_init(void)
for (i=0; i <= BSP_INTERRUPT_VECTOR_MAX_STD; i++) {
#if defined(LEON3) && \
(defined(RTEMS_SMP) || defined(RTEMS_MULTIPROCESSING))
- /* Don't install IRQ handler on IPI interrupt */
- if (i == LEON3_mp_irq)
- continue;
+ /* Don't install IRQ handler on IPI interrupt. An SMP kernel with max one
+ * CPU does not use IPIs
+ */
+#ifdef RTEMS_SMP
+ if (rtems_configuration_get_maximum_processors() > 1)
+#endif
+ if (i == LEON3_mp_irq)
+ continue;
#endif
vector = SPARC_ASYNCHRONOUS_TRAP(i) + 0x10;
rtems_interrupt_catch(bsp_isr_handler, vector, &previous_isr);
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