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Got it.

=BB=F1=C8=A1 Outlook for iOS
=B7=A2=BC=FE=C8=CB: Slava O= vsiienko <viacheslavo@nvidia.com>
=B7=A2=CB=CD=CA=B1=BC=E4: Friday, November 12, 2021 12:47:04 AM
=CA=D5=BC=FE=C8=CB: YE Chengfeng <cyeaa@connect.ust.hk>; Ferru= h Yigit <ferruh.yigit@intel.com>; dev@dpdk.org <dev@dpdk.org> =B3=AD=CB=CD: Raslan Darawsheh <rasland@nvidia.com>; Matan Azr= ad <matan@nvidia.com>; stable@dpdk.org <stable@dpdk.org>
=D6=F7=CC=E2: RE: [PATCH] net/mlx5: remove redundant "set used&= quot;
 

From: YE Chengfeng <cyeaa@con= nect.ust.hk>
Sent: Thursday, November 11, 2021 18:08
To: Slava Ovsiienko <viacheslavo@nvidia.com>; Ferruh Yigit <= ;ferruh.yigit@intel.com>; dev@dpdk.org
Cc: Raslan Darawsheh <rasland@nvidia.com>; Matan Azrad <mat= an@nvidia.com>; stable@dpdk.org
Subject: Re: [PATCH] net/mlx5: remove redundant "set used"=

 

No problem, I will send the new patch. 

[SO] Thank you.

 

But what about the commit message and title, should I use the previous= one? 

net/mlx5: fix mutex unlock in txpp cl=
eanup
[SO] Please,  send as the next version (v6?) of your patch. Jus=
t squash my proposals
and keep your title (=A1=B0net/mlx5: fix mutex unl=
ock in txpp cleanup=A1=B1) and commit message.
 
With best regards,
Slava
 
=
 =
;

 

=BB=F1=C8=A1 Outlook for iOS

=B7=A2=BC=FE=C8=CB: Slava Ovsiienko <viacheslavo@= nvidia.com>
=B7= =A2=CB=CD=CA=B1=BC=E4: Thursday, November 11, 2021 8:27:30 PM
=CA= =D5=BC=FE=C8=CB: Fer= ruh Yigit <ferruh.yigit@intel.com= >; dev@dpdk.org <dev@dpdk.org> =B3= =AD=CB=CD: Raslan Darawsheh <rasland@nvidia.com= >; Matan Azrad <matan@nvidia.com<= /a>>; stable@dpdk.org <stable@dpdk.org>; YE Chengfeng <cyeaa@connect.ust.hk>
=D6= =F7=CC=E2: RE: [PATC= H] net/mlx5: remove redundant "set used"

 

Hi, Ferruh

> -----Original Message-----
> From: Ferruh Yigit <ferru= h.yigit@intel.com>
> Sent: Thursday, November 11, 2021 14:08
> To: Slava Ovsiienko <viac= heslavo@nvidia.com>; dev@dpdk.org
> Cc: Raslan Darawsheh <rasland= @nvidia.com>; Matan Azrad
> <matan@nvidia.com>; stable@dpdk.org; Chengfeng Ye
> <cyeaa@connect.ust.hk&g= t;
> Subject: Re: [PATCH] net/mlx5: remove redundant "set used" >
> On 11/11/2021 8:59 AM, Slava Ovsiienko wrote:
> > Hi, Ferruh
> >
> > I've also inspected the mlx5 PMD code for RTE_SET_USED() for the<= br> > > similar issues related to the MLX5_ASSERT().
> >
> > The patch
> > https://apc01.safelinks.protection.outlook.com/?url=3Dhttp%3A%2F%2Fpatches.= dpdk.org%2Fproject%2Fdpdk%2Fpatch%2F20211111084751.26721-1-&amp;data=3D= 04%7C01%7Ccyeaa%40connect.ust.hk%7C87553a5cd43647db708008d9a50ea321%7C6c1d4= 15239d044ca88d9b8d6ddca0708%7C1%7C0%7C637722304566828185%7CUnknown%7CTWFpbG= Zsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C= 1000&amp;sdata=3DwoTMghsE0S7ckoo0AI01YbdWrJeLtbMCu4GeE8JDiUc%3D&amp= ;reserved=3D0
> viac
> > heslavo@nvidia.com/ > > should refine the few found ones.
> >
> > I do not mind about squashing with "net/mlx5: fix mutex unlo= ck in txpp
> cleanup"
> > After getting this code in Upstream will care about the version f= or LTS.
> >
>
> It will cause additional complexity for the LTS, since a small part of= the below
> fix will be originated from Chengfeng's change. To help LTS, what do y= ou think
> - First get your fix on top of current task
> - Have a new version from Chengfeng on top of latest head, with 'claim= _zero'
> usage?
Would be nice, I have no any objections.
Chengfeng, could you please, squash (or write by yourself) my proposed upda= tes
and send the next version of your patch with "claim_zero()"?

> So only your update need to be merged to LTS releases.
Yes, agree, it is even better than my proposal.

With best regards,
Slava

> >
> >> -----Original Message-----
> >> From: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
> >> Sent: Thursday, November 11, 2021 10:48
> >> To: dev@dpdk.org
> >> Cc: ferruh.yigit@in= tel.com; Raslan Darawsheh <ras= land@nvidia.com>;
> >> Matan Azrad <matan@nvi= dia.com>; stable@dpdk.org
> >> Subject: [PATCH] net/mlx5: remove redundant "set used&qu= ot;
> >>
> >> The patch just refines the code and replaces the pairs of
> >> MLX5_ASSERT() and
> >> RTE_SET_USED() with equivalent claim_zero().
> >>
> >> Cc: stable@dpdk.org > >>
> >> Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
> >> ---
> >>   drivers/net/mlx5/mlx5_txpp.c | 30 ++++++++++-----= ---------------
> >>   1 file changed, 10 insertions(+), 20 deletions(-)=
> >>
> >> diff --git a/drivers/net/mlx5/mlx5_txpp.c
> >> b/drivers/net/mlx5/mlx5_txpp.c index 73626f0e8f..af77e91e4c 1= 00644
> >> --- a/drivers/net/mlx5/mlx5_txpp.c
> >> +++ b/drivers/net/mlx5/mlx5_txpp.c
> >> @@ -890,7 +890,6 @@ mlx5_txpp_start(struct rte_eth_dev *dev)<= br> > >>     struct mlx5_priv *priv =3D dev->da= ta->dev_private;
> >>     struct mlx5_dev_ctx_shared *sh =3D pr= iv->sh;
> >>     int err =3D 0;
> >> -  int ret;
> >>
> >>     if (!priv->config.tx_pp) {
> >>          &n= bsp;  /* Packet pacing is not requested for the device. */ @@ -
> >> 903,14 +902,14 @@ mlx5_txpp_start(struct rte_eth_dev *dev) > >>          &n= bsp;  return 0;
> >>     }
> >>     if (priv->config.tx_pp > 0) { > >> -          ret = =3D rte_mbuf_dynflag_lookup
> >> -
> >>     (RTE_MBUF_DYNFLAG_TX_TIMESTAMP_NAME, = NULL);
> >> -          if (r= et < 0)
> >> +          err = =3D rte_mbuf_dynflag_lookup
> >> +          =         (RTE_MBUF_DYNFLAG_TX_TIMESTAMP_N= AME,
> >> NULL);
> >> +          /* No= flag registered means no service needed. */
> >> +          if (e= rr < 0)
> >>          &n= bsp;          return 0;
> >> +          err = =3D 0;
> >>     }
> >> -  ret =3D pthread_mutex_lock(&sh->txpp.mutex); > >> -  MLX5_ASSERT(!ret);
> >> -  RTE_SET_USED(ret);
> >> +  claim_zero(pthread_mutex_lock(&sh->txpp.mutex)= );
> >>     if (sh->txpp.refcnt) {
> >>          &n= bsp;  priv->txpp_en =3D 1;
> >>          &n= bsp;  ++sh->txpp.refcnt;
> >> @@ -924,9 +923,7 @@ mlx5_txpp_start(struct rte_eth_dev *dev)<= br> > >>          &n= bsp;          rte_errno =3D -e= rr;
> >>          &n= bsp;  }
> >>     }
> >> -  ret =3D pthread_mutex_unlock(&sh->txpp.mutex);=
> >> -  MLX5_ASSERT(!ret);
> >> -  RTE_SET_USED(ret);
> >> +  claim_zero(pthread_mutex_unlock(&sh->txpp.mute= x));
> >>     return err;
> >>   }
> >>
> >> @@ -944,28 +941,21 @@ mlx5_txpp_stop(struct rte_eth_dev *dev)=   {
> >>     struct mlx5_priv *priv =3D dev->da= ta->dev_private;
> >>     struct mlx5_dev_ctx_shared *sh =3D pr= iv->sh;
> >> -  int ret;
> >>
> >>     if (!priv->txpp_en) {
> >>          &n= bsp;  /* Packet pacing is already disabled for the device. */
> >>          &n= bsp;  return;
> >>     }
> >>     priv->txpp_en =3D 0;
> >> -  ret =3D pthread_mutex_lock(&sh->txpp.mutex); > >> -  MLX5_ASSERT(!ret);
> >> -  RTE_SET_USED(ret);
> >> +  claim_zero(pthread_mutex_lock(&sh->txpp.mutex)= );
> >>     MLX5_ASSERT(sh->txpp.refcnt);
> >>     if (!sh->txpp.refcnt || --sh->t= xpp.refcnt) {
> >> -          ret = =3D pthread_mutex_unlock(&sh->txpp.mutex);
> >> -          MLX5_= ASSERT(!ret);
> >> -          RTE_S= ET_USED(ret);
> >> +          claim= _zero(pthread_mutex_unlock(&sh->txpp.mutex));
> >>          &n= bsp;  return;
> >>     }
> >>     /* No references any more, do actual = destroy. */
> >>     mlx5_txpp_destroy(sh);
> >> -  ret =3D pthread_mutex_unlock(&sh->txpp.mutex);=
> >> -  MLX5_ASSERT(!ret);
> >> -  RTE_SET_USED(ret);
> >> +  claim_zero(pthread_mutex_unlock(&sh->txpp.mute= x));
> >>   }
> >>
> >>   /*
> >> --
> >> 2.18.1
> >

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