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Fri, 07 Jun 2024 08:45:22 -0400 X-MC-Unique: 55xIFJ_QNg2A_WZbhzR4Tw-1 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 99D1119560B6; Fri, 7 Jun 2024 12:45:20 +0000 (UTC) Received: from [10.39.208.30] (unknown [10.39.208.30]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 381C61955E8C; Fri, 7 Jun 2024 12:45:18 +0000 (UTC) Message-ID: Date: Fri, 7 Jun 2024 14:45:15 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/5] baseband/acc: fix memory barrier To: Hernan Vargas , dev@dpdk.org, gakhil@marvell.com, trix@redhat.com Cc: nicolas.chautru@intel.com, qi.z.zhang@intel.com, stable@dpdk.org References: <20240502204548.236729-1-hernan.vargas@intel.com> <20240502204548.236729-2-hernan.vargas@intel.com> From: Maxime Coquelin Autocrypt: addr=maxime.coquelin@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org On 5/2/24 22:45, Hernan Vargas wrote: > Moving memory barrier so that dequeue thread can be in sync with enqueue > thread. > > Fixes: 32e8b7ea35dd ("baseband/acc100: refactor to segregate common code") > Cc: stable@dpdk.org > > Signed-off-by: Hernan Vargas > --- > drivers/baseband/acc/acc_common.h | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/baseband/acc/acc_common.h b/drivers/baseband/acc/acc_common.h > index fddeb0737b8b..e249f37e38fe 100644 > --- a/drivers/baseband/acc/acc_common.h > +++ b/drivers/baseband/acc/acc_common.h > @@ -1112,6 +1112,9 @@ acc_dma_enqueue(struct acc_queue *q, uint16_t n, > req_elem_addr, > (void *)q->mmio_reg_enqueue); > > + q->aq_enqueued++; > + q->sw_ring_head += enq_batch_size; > + > rte_wmb(); > > /* Start time measurement for enqueue function offload. */ > @@ -1122,8 +1125,6 @@ acc_dma_enqueue(struct acc_queue *q, uint16_t n, > > queue_stats->acc_offload_cycles += rte_rdtsc_precise() - start_time; > > - q->aq_enqueued++; > - q->sw_ring_head += enq_batch_size; > n -= enq_batch_size; > > } while (n); Reviewed-by: Maxime Coquelin Thanks, Maxime