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36 lines
1.1 KiB
Diff
36 lines
1.1 KiB
Diff
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From 33b7977ba754b6ec4e65aaae34de92d4086ea0bd Mon Sep 17 00:00:00 2001
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From: Roy Pledge <roy.pledge@nxp.com>
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Date: Wed, 13 Sep 2017 17:03:06 -0400
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Subject: [PATCH] soc: fsl: dpio: Prefer the CPU affine DPIO
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Use the cpu affine DPIO unless there isn't one which can happen
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if less DPIOs than cores are assign to the kernel.
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Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
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---
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drivers/soc/fsl/dpio/dpio-service.c | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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--- a/drivers/soc/fsl/dpio/dpio-service.c
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+++ b/drivers/soc/fsl/dpio/dpio-service.c
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@@ -58,7 +58,7 @@ static inline struct dpaa2_io *service_s
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* If cpu == -1, choose the current cpu, with no guarantees about
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* potentially being migrated away.
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*/
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- if (unlikely(cpu < 0))
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+ if (cpu < 0)
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cpu = smp_processor_id();
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/* If a specific cpu was requested, pick it up immediately */
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@@ -70,6 +70,10 @@ static inline struct dpaa2_io *service_s
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if (d)
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return d;
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+ d = service_select_by_cpu(d, -1);
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+ if (d)
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+ return d;
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+
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spin_lock(&dpio_list_lock);
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d = list_entry(dpio_list.next, struct dpaa2_io, node);
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list_del(&d->node);
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