Re: [dpdk-dev] [PATCH] net/qede: only access sw rx ring index for debug

[Rasesh Mody <rmody@marvell.com>]

>From: dev <dev-bounces@dpdk.org> On Behalf Of Jerin Jacob
>Sent: Thursday, October 03, 2019 7:40 AM
>
>On Fri, Sep 27, 2019 at 4:59 PM David Marchand
><david.marchand@redhat.com> wrote:
>>
>> Caught by clang, this idx value is only used for a debug message when
>> the mbufs allocation fails.
>> No need to use idx as a temporary storage.
>>
>> Fixes: 8f2312474529 ("net/qede: fix performance bottleneck in Rx
>> path")
>> Cc: stable@dpdk.org
>
>Rasesh, Shahed,
>
>Please review this patch.

Acked.

Thanks!
-Rasesh
>
>>
>> Signed-off-by: David Marchand <david.marchand@redhat.com>
>> ---
>>  drivers/net/qede/qede_rxtx.c | 6 +++---
>>  1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/net/qede/qede_rxtx.c
>> b/drivers/net/qede/qede_rxtx.c index c38cbb9..1fbeba2 100644
>> --- a/drivers/net/qede/qede_rxtx.c
>> +++ b/drivers/net/qede/qede_rxtx.c
>> @@ -46,8 +46,6 @@ static inline int qede_alloc_rx_bulk_mbufs(struct
>qede_rx_queue *rxq, int count)
>>         int i, ret = 0;
>>         uint16_t idx;
>>
>> -       idx = rxq->sw_rx_prod & NUM_RX_BDS(rxq);
>> -
>>         if (count > QEDE_MAX_BULK_ALLOC_COUNT)
>>                 count = QEDE_MAX_BULK_ALLOC_COUNT;
>>
>> @@ -56,7 +54,9 @@ static inline int qede_alloc_rx_bulk_mbufs(struct
>qede_rx_queue *rxq, int count)
>>                 PMD_RX_LOG(ERR, rxq,
>>                            "Failed to allocate %d rx buffers "
>>                             "sw_rx_prod %u sw_rx_cons %u mp entries %u free %u",
>> -                           count, idx, rxq->sw_rx_cons & NUM_RX_BDS(rxq),
>> +                           count,
>> +                           rxq->sw_rx_prod & NUM_RX_BDS(rxq),
>> +                           rxq->sw_rx_cons & NUM_RX_BDS(rxq),
>>                             rte_mempool_avail_count(rxq->mb_pool),
>>                             rte_mempool_in_use_count(rxq->mb_pool));
>>                 return -ENOMEM;
>> --
>> 1.8.3.1
>>