46 lines
1.7 KiB
Diff
46 lines
1.7 KiB
Diff
From ed090599c8bdcf5788d3459a752f1bbac0cef176 Mon Sep 17 00:00:00 2001
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From: Tyler Retzlaff <roretzla@linux.microsoft.com>
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Date: Mon, 20 Mar 2023 12:00:21 -0700
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Subject: [PATCH] rework atomic intrinsics fetch operations
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[ upstream commit ed090599c8bdcf5788d3459a752f1bbac0cef176 ]
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Use __atomic_fetch_{add,and,or,sub,xor} instead of
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__atomic_{add,and,or,sub,xor}_fetch adding the necessary code to
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allow consumption of the resulting value.
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Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
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Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
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Acked-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
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Acked-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
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Reviewed-by: David Marchand <david.marchand@redhat.com>
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---
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drivers/net/af_xdp/rte_eth_af_xdp.c | 4 ++--
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1 files changed, 77 insertions(+), 77 deletions(-)
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diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c
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index 2a20a6960c..c7786cc53a 100644
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--- a/drivers/net/af_xdp/rte_eth_af_xdp.c
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+++ b/drivers/net/af_xdp/rte_eth_af_xdp.c
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@@ -979,7 +979,7 @@ eth_dev_close(struct rte_eth_dev *dev)
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break;
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xsk_socket__delete(rxq->xsk);
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- if (__atomic_sub_fetch(&rxq->umem->refcnt, 1, __ATOMIC_ACQUIRE)
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+ if (__atomic_fetch_sub(&rxq->umem->refcnt, 1, __ATOMIC_ACQUIRE) - 1
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== 0) {
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(void)xsk_umem__delete(rxq->umem->umem);
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xdp_umem_destroy(rxq->umem);
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@@ -1710,7 +1710,7 @@ xsk_configure(struct pmd_internals *internals, struct pkt_rx_queue *rxq,
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out_xsk:
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xsk_socket__delete(rxq->xsk);
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out_umem:
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- if (__atomic_sub_fetch(&rxq->umem->refcnt, 1, __ATOMIC_ACQUIRE) == 0)
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+ if (__atomic_fetch_sub(&rxq->umem->refcnt, 1, __ATOMIC_ACQUIRE) - 1 == 0)
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xdp_umem_destroy(rxq->umem);
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return ret;
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--
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2.33.0
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