blob: e9fdc7d0da7352bb5ebe4f332d63f47f8977e65f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
From 33b7977ba754b6ec4e65aaae34de92d4086ea0bd Mon Sep 17 00:00:00 2001
From: Roy Pledge <roy.pledge@nxp.com>
Date: Wed, 13 Sep 2017 17:03:06 -0400
Subject: [PATCH] soc: fsl: dpio: Prefer the CPU affine DPIO
Use the cpu affine DPIO unless there isn't one which can happen
if less DPIOs than cores are assign to the kernel.
Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
---
drivers/soc/fsl/dpio/dpio-service.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/soc/fsl/dpio/dpio-service.c
+++ b/drivers/soc/fsl/dpio/dpio-service.c
@@ -58,7 +58,7 @@ static inline struct dpaa2_io *service_s
* If cpu == -1, choose the current cpu, with no guarantees about
* potentially being migrated away.
*/
- if (unlikely(cpu < 0))
+ if (cpu < 0)
cpu = smp_processor_id();
/* If a specific cpu was requested, pick it up immediately */
@@ -70,6 +70,10 @@ static inline struct dpaa2_io *service_s
if (d)
return d;
+ d = service_select_by_cpu(d, -1);
+ if (d)
+ return d;
+
spin_lock(&dpio_list_lock);
d = list_entry(dpio_list.next, struct dpaa2_io, node);
list_del(&d->node);
|
