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authorGravatar Yury Norov <yury.norov@gmail.com> 2024-04-13 11:49:13 -0700
committerGravatar Thomas Bogendoerfer <tsbogend@alpha.franken.de> 2024-04-15 10:29:36 +0200
commit40e20fbccfb722f219ab8d3ff1edde99e4a7c46c (patch)
tree9cc432b547962a9f0bf01be31efa70d297144ab4 /arch/mips
parentmips: dts: ralink: mt7621: reorder the attributes of the root node (diff)
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MIPS: SGI-IP27: micro-optimize arch_init_irq()
The function sets adjasted groups of bits in hub_irq_map by using for-loops. There's a bitmap_set() function dedicated to do this. Because [0, CPU_CALL_B_IRQ] and [NI_BRDCAST_ERR_A, MSC_PANIC_INTR] ranges belong to the same machine word, bitmap_set() would boil down to an inline wrapper in both cases, avoiding generating a loop, whth the associate overhead. Signed-off-by: Yury Norov <yury.norov@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/sgi-ip27/ip27-irq.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/mips/sgi-ip27/ip27-irq.c b/arch/mips/sgi-ip27/ip27-irq.c
index 8f5299b269e7..dcb14a234b1c 100644
--- a/arch/mips/sgi-ip27/ip27-irq.c
+++ b/arch/mips/sgi-ip27/ip27-irq.c
@@ -286,11 +286,8 @@ void __init arch_init_irq(void)
* Mark these as reserved right away so they won't be used accidentally
* later.
*/
- for (i = 0; i <= CPU_CALL_B_IRQ; i++)
- set_bit(i, hub_irq_map);
-
- for (i = NI_BRDCAST_ERR_A; i <= MSC_PANIC_INTR; i++)
- set_bit(i, hub_irq_map);
+ bitmap_set(hub_irq_map, 0, CPU_CALL_B_IRQ + 1);
+ bitmap_set(hub_irq_map, NI_BRDCAST_ERR_A, MSC_PANIC_INTR - NI_BRDCAST_ERR_A + 1);
fn = irq_domain_alloc_named_fwnode("HUB");
WARN_ON(fn == NULL);