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From: Tyler Retzlaff <roretzla@linux.microsoft.com>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: dev@dpdk.org, "Morten Brørup" <mb@smartsharesystems.com>,
	"Ajit Khaparde" <ajit.khaparde@broadcom.com>,
	"Andrew Boyer" <andrew.boyer@amd.com>,
	"Andrew Rybchenko" <andrew.rybchenko@oktetlabs.ru>,
	"Bruce Richardson" <bruce.richardson@intel.com>,
	"Chenbo Xia" <chenbox@nvidia.com>,
	"Chengwen Feng" <fengchengwen@huawei.com>,
	"Dariusz Sosnowski" <dsosnowski@nvidia.com>,
	"David Christensen" <drc@linux.vnet.ibm.com>,
	"Hyong Youb Kim" <hyonkim@cisco.com>,
	"Jerin Jacob" <jerinj@marvell.com>,
	"Jie Hai" <haijie1@huawei.com>,
	"Jingjing Wu" <jingjing.wu@intel.com>,
	"John Daley" <johndale@cisco.com>,
	"Kevin Laatz" <kevin.laatz@intel.com>,
	"Kiran Kumar K" <kirankumark@marvell.com>,
	"Konstantin Ananyev" <konstantin.v.ananyev@yandex.ru>,
	"Maciej Czekaj" <mczekaj@marvell.com>,
	"Matan Azrad" <matan@nvidia.com>,
	"Maxime Coquelin" <maxime.coquelin@redhat.com>,
	"Nithin Dabilpuram" <ndabilpuram@marvell.com>,
	"Ori Kam" <orika@nvidia.com>,
	"Ruifeng Wang" <ruifeng.wang@arm.com>,
	"Satha Rao" <skoteshwar@marvell.com>,
	"Somnath Kotur" <somnath.kotur@broadcom.com>,
	"Suanming Mou" <suanmingm@nvidia.com>,
	"Sunil Kumar Kori" <skori@marvell.com>,
	"Viacheslav Ovsiienko" <viacheslavo@nvidia.com>,
	"Yisen Zhuang" <yisen.zhuang@huawei.com>,
	"Yuying Zhang" <Yuying.Zhang@intel.com>
Subject: Re: [PATCH v4 01/18] mbuf: deprecate GCC marker in rte mbuf struct
Date: Tue, 20 Feb 2024 09:24:18 -0800	[thread overview]
Message-ID: <20240220172418.GB14108@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net> (raw)
In-Reply-To: <5265622.RUnXabflUD@thomas>

On Sun, Feb 18, 2024 at 04:22:15PM +0100, Thomas Monjalon wrote:
> 18/02/2024 14:07, Morten Brørup:
> > From: Thomas Monjalon [mailto:thomas@monjalon.net]
> > > 15/02/2024 07:21, Tyler Retzlaff:
> > > > --- a/lib/eal/include/rte_common.h
> > > > +++ b/lib/eal/include/rte_common.h
> > > > @@ -582,6 +582,12 @@ static void
> > > __attribute__((destructor(RTE_PRIO(prio)), used)) func(void)
> > > >  /** Marker for 8B alignment in a structure. */
> > > >  __extension__ typedef uint64_t RTE_MARKER64[0];
> > > >
> > > > +#define __rte_marker(type, name) type name /* __rte_deprecated */
> > > > +
> > > > +#else
> > > > +
> > > > +#define __rte_marker(type, name)
> > > > +
> > > >  #endif
> > > >
> > > >  /*********** Macros for calculating min and max **********/
> > > > diff --git a/lib/mbuf/rte_mbuf_core.h b/lib/mbuf/rte_mbuf_core.h
> > > > index 5688683..9e9590b 100644
> > > > --- a/lib/mbuf/rte_mbuf_core.h
> > > > +++ b/lib/mbuf/rte_mbuf_core.h
> > > > @@ -16,7 +16,10 @@
> > > >   * New fields and flags should fit in the "dynamic space".
> > > >   */
> > > >
> > > > +#include <assert.h>
> > > > +#include <stdalign.h>
> > > >  #include <stdint.h>
> > > > +#include <stddef.h>
> > > >
> > > >  #include <rte_byteorder.h>
> > > >  #include <rte_stdatomic.h>
> > > > @@ -464,204 +467,240 @@ enum {
> > > >   * The generic rte_mbuf, containing a packet mbuf.
> > > >   */
> > > >  struct rte_mbuf {
> > > > -	RTE_MARKER cacheline0;
> > > > -
> > > > -	void *buf_addr;           /**< Virtual address of segment buffer.
> > > */
> > > > +	__rte_marker(RTE_MARKER, cacheline0);
> > > 
> > > You don't need to keep the first argument.
> > > This would be simpler:
> > > 	__rte_marker(cacheline0);
> > > You just need to create 2 functions: __rte_marker and __rte_marker64.
> > > 
> > > You should replace all occurrences of RTE_MARKER in DPDK in one patch,
> > > and mark RTE_MARKER as deprecated (use #pragma GCC poison)
> > 
> > I like this suggestion.
> > However, some applications might use RTE_MARKER in their own structures.
> > Wouldn't it be considered API breakage to mark RTE_MARKER as deprecated?
> 
> Yes it is an API breakage.
> Do we prefer waiting 24.11 for poisoning this macro?

i only intend to announce deprecation now, actual poisoning given mbuf
is involved probably should be no earlier than 24.11 and possibly even
longer. though in my experience adaptation never really happens until it
is forced.

> 

  parent reply	other threads:[~2024-02-20 17:24 UTC|newest]

Thread overview: 171+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-30 23:26 [PATCH] replace GCC marker extension with C11 anonymous unions Tyler Retzlaff
2024-01-30 23:26 ` [PATCH] mbuf: " Tyler Retzlaff
2024-01-31  9:18   ` Morten Brørup
2024-01-31 21:09     ` Tyler Retzlaff
2024-01-31 22:39       ` Morten Brørup
2024-01-31 13:49   ` Bruce Richardson
2024-01-31 20:45     ` Tyler Retzlaff
2024-01-31 22:55       ` Morten Brørup
2024-02-13  6:45   ` [PATCH v2] RFC: " Tyler Retzlaff
2024-02-13  6:45     ` [PATCH v2] mbuf: " Tyler Retzlaff
2024-02-13 16:58       ` Morten Brørup
2024-02-13 18:48         ` Tyler Retzlaff
2024-02-13 19:27           ` Morten Brørup
2024-02-13 20:00             ` Tyler Retzlaff
2024-02-13  8:57     ` [PATCH v2] RFC: " Bruce Richardson
2024-02-13 17:09     ` Morten Brørup
2024-02-13 23:33   ` [PATCH v3] RFC deprecate RTE_MARKER in struct rte_mbuf Tyler Retzlaff
2024-02-13 23:33     ` [PATCH v3] mbuf: deprecate GCC marker in rte mbuf struct Tyler Retzlaff
2024-02-14 10:46       ` Morten Brørup
2024-02-14 20:16         ` Tyler Retzlaff
2024-02-14 10:49     ` [PATCH v3] RFC deprecate RTE_MARKER in struct rte_mbuf Morten Brørup
2024-02-26  1:18     ` Stephen Hemminger
2024-02-15  6:21 ` [PATCH v4 00/18] stop using zero sized marker fields Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 01/18] mbuf: deprecate GCC marker in rte mbuf struct Tyler Retzlaff
2024-02-18  2:28     ` fengchengwen
2024-02-18 12:39     ` Thomas Monjalon
2024-02-18 13:07       ` Morten Brørup
2024-02-18 15:22         ` Thomas Monjalon
2024-02-18 16:20           ` Morten Brørup
2024-02-20 17:24           ` Tyler Retzlaff [this message]
2024-02-20 17:20       ` Tyler Retzlaff
2024-02-20 17:53         ` Thomas Monjalon
2024-02-20 19:16           ` Thomas Monjalon
2024-02-20 19:37             ` Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 02/18] mbuf: stop using zero sized marker fields Tyler Retzlaff
2024-02-18  2:38     ` fengchengwen
2024-02-15  6:21   ` [PATCH v4 03/18] net/i40e: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 04/18] net/iavf: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 05/18] net/ice: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 06/18] net/ixgbe: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 07/18] net/mlx5: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 08/18] net/sfc: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 09/18] net/bnxt: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 10/18] net/enic: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 11/18] net/fm10k: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 12/18] net/hns3: " Tyler Retzlaff
2024-02-18  3:00     ` fengchengwen
2024-02-15  6:21   ` [PATCH v4 13/18] net/ionic: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 14/18] net/thunderx: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 15/18] net/virtio: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 16/18] net/cnxk: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 17/18] common/idpf: " Tyler Retzlaff
2024-02-15  6:21   ` [PATCH v4 18/18] examples/dma: " Tyler Retzlaff
2024-02-15  9:37   ` [PATCH v4 00/18] " Morten Brørup
2024-02-24  8:21 ` [PATCH v5 00/22] stop using RTE_MARKER extensions Tyler Retzlaff
2024-02-24  8:21   ` [PATCH v5 01/22] eal: provide macro to expand marker extensions Tyler Retzlaff
2024-02-24 10:51     ` Thomas Monjalon
2024-02-24 11:18       ` Thomas Monjalon
2024-02-24  8:21   ` [PATCH v5 02/22] mbuf: expand rte markers empty when building with MSVC Tyler Retzlaff
2024-02-24  8:21   ` [PATCH v5 03/22] security: " Tyler Retzlaff
2024-02-24  8:21   ` [PATCH v5 04/22] cryptodev: " Tyler Retzlaff
2024-02-24  8:21   ` [PATCH v5 05/22] mbuf: stop using mbuf cacheline marker fields Tyler Retzlaff
2024-02-24 10:58     ` Thomas Monjalon
2024-02-26 18:20       ` Stephen Hemminger
2024-02-24  8:21   ` [PATCH v5 06/22] mbuf: add mbuf descriptor accessors Tyler Retzlaff
2024-02-24 11:01     ` Thomas Monjalon
2024-02-24  8:21   ` [PATCH v5 07/22] common/idpf: use " Tyler Retzlaff
2024-02-24  8:21   ` [PATCH v5 08/22] net/bnxt: " Tyler Retzlaff
2024-02-24  8:21   ` [PATCH v5 09/22] net/cnxk: " Tyler Retzlaff
2024-02-24  8:21   ` [PATCH v5 10/22] net/enic: " Tyler Retzlaff
2024-02-24  8:21   ` [PATCH v5 11/22] net/fm10k: " Tyler Retzlaff
2024-02-24  8:21   ` [PATCH v5 12/22] net/hns3: " Tyler Retzlaff
2024-02-24  8:21   ` [PATCH v5 13/22] net/i40e: " Tyler Retzlaff
2024-02-24  8:21   ` [PATCH v5 14/22] net/iavf: " Tyler Retzlaff
2024-02-24  8:22   ` [PATCH v5 15/22] net/ice: " Tyler Retzlaff
2024-02-24  8:22   ` [PATCH v5 16/22] net/ionic: " Tyler Retzlaff
2024-02-24  8:22   ` [PATCH v5 17/22] net/ixgbe: " Tyler Retzlaff
2024-02-24  8:22   ` [PATCH v5 18/22] net/mlx5: " Tyler Retzlaff
2024-02-24  8:22   ` [PATCH v5 19/22] net/octeon_ep: " Tyler Retzlaff
2024-02-24  8:22   ` [PATCH v5 20/22] net/sfc: " Tyler Retzlaff
2024-02-24  8:22   ` [PATCH v5 21/22] net/thunderx: " Tyler Retzlaff
2024-02-24  8:22   ` [PATCH v5 22/22] net/virtio: " Tyler Retzlaff
2024-02-24 10:42   ` [PATCH v5 00/22] stop using RTE_MARKER extensions Morten Brørup
2024-02-24 11:13     ` Thomas Monjalon
2024-02-24 11:23       ` Morten Brørup
2024-02-27  5:41 ` [PATCH v6 00/23] stop and remove RTE_MARKER typedefs Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 01/23] mbuf: add accessors for rearm and Rx descriptor fields Tyler Retzlaff
2024-02-27  9:10     ` Morten Brørup
2024-02-27 17:17       ` Tyler Retzlaff
2024-02-28  8:28         ` Morten Brørup
2024-02-28 16:20           ` Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 02/23] mbuf: consolidate driver asserts for mbuf struct Tyler Retzlaff
2024-02-27 10:02     ` Konstantin Ananyev
2024-03-14 16:51     ` Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 03/23] common/idpf: use mbuf descriptor accessors Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 04/23] net/bnxt: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 05/23] net/cnxk: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 06/23] net/enic: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 07/23] net/fm10k: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 08/23] net/hns3: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 09/23] net/i40e: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 10/23] net/iavf: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 11/23] net/ice: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 12/23] net/ionic: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 13/23] net/ixgbe: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 14/23] net/mlx5: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 15/23] net/octeon_ep: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 16/23] net/sfc: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 17/23] net/thunderx: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 18/23] net/virtio: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 19/23] examples/dma: use mbuf descriptor accessor Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 20/23] mbuf: remove and stop using rte marker fields Tyler Retzlaff
2024-02-27  9:15     ` Morten Brørup
2024-02-27 10:03     ` Konstantin Ananyev
2024-02-27 15:18     ` David Marchand
2024-02-27 16:04       ` Morten Brørup
2024-02-27 17:23       ` Tyler Retzlaff
2024-02-28 10:42         ` David Marchand
2024-02-28 14:03       ` Dodji Seketeli
2024-02-28 14:43         ` David Marchand
2024-02-29 14:50           ` Dodji Seketeli
2024-02-28 14:18     ` David Marchand
2024-02-28 15:01       ` Morten Brørup
2024-02-28 15:33         ` David Marchand
2024-02-28 17:20       ` Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 21/23] security: remove " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 22/23] cryptodev: " Tyler Retzlaff
2024-02-27  5:41   ` [PATCH v6 23/23] devtools: forbid new use of rte marker typedefs Tyler Retzlaff
2024-03-20 22:01 ` [PATCH v7 0/4] remove use of RTE_MARKER fields in libraries Tyler Retzlaff
2024-03-20 22:01   ` [PATCH v7 1/4] net/i40e: use inline prefetch function Tyler Retzlaff
2024-03-26 10:16     ` Morten Brørup
2024-03-27 18:14       ` Tyler Retzlaff
2024-03-27 19:45         ` Morten Brørup
2024-03-20 22:01   ` [PATCH v7 2/4] mbuf: remove rte marker fields Tyler Retzlaff
2024-03-21 10:32     ` Bruce Richardson
2024-03-21 15:31       ` Tyler Retzlaff
2024-03-21 16:19         ` Morten Brørup
2024-03-26 11:12     ` Morten Brørup
2024-03-20 22:01   ` [PATCH v7 3/4] security: " Tyler Retzlaff
2024-03-26 10:28     ` Morten Brørup
2024-03-27 19:59       ` Tyler Retzlaff
2024-03-20 22:01   ` [PATCH v7 4/4] cryptodev: " Tyler Retzlaff
2024-03-26 10:31     ` Morten Brørup
2024-03-27 19:56 ` [PATCH v8 0/4] remove use of RTE_MARKER fields in libraries Tyler Retzlaff
2024-03-27 19:56   ` [PATCH v8 1/4] net/i40e: use inline prefetch function Tyler Retzlaff
2024-03-27 19:56   ` [PATCH v8 2/4] mbuf: remove rte marker fields Tyler Retzlaff
2024-03-27 19:56   ` [PATCH v8 3/4] security: " Tyler Retzlaff
2024-03-27 19:56   ` [PATCH v8 4/4] cryptodev: " Tyler Retzlaff
2024-04-02 20:08 ` [PATCH v9 0/4] remove use of RTE_MARKER fields in libraries Tyler Retzlaff
2024-04-02 20:08   ` [PATCH v9 1/4] net/i40e: use inline prefetch function Tyler Retzlaff
2024-04-02 20:08   ` [PATCH v9 2/4] mbuf: remove rte marker fields Tyler Retzlaff
2024-04-02 20:45     ` Stephen Hemminger
2024-04-02 20:51       ` Tyler Retzlaff
2024-04-02 20:08   ` [PATCH v9 3/4] security: " Tyler Retzlaff
2024-04-02 20:08   ` [PATCH v9 4/4] cryptodev: " Tyler Retzlaff
2024-04-03 17:53 ` [PATCH v10 0/4] remove use of RTE_MARKER fields in libraries Tyler Retzlaff
2024-04-03 17:53   ` [PATCH v10 1/4] net/i40e: use inline prefetch function Tyler Retzlaff
2024-04-03 21:49     ` Stephen Hemminger
2024-04-03 17:53   ` [PATCH v10 2/4] mbuf: remove rte marker fields Tyler Retzlaff
2024-04-03 19:32     ` Morten Brørup
2024-04-03 22:45       ` Tyler Retzlaff
2024-04-03 21:49     ` Stephen Hemminger
2024-04-03 17:53   ` [PATCH v10 3/4] security: " Tyler Retzlaff
2024-04-03 21:50     ` Stephen Hemminger
2024-04-03 17:53   ` [PATCH v10 4/4] cryptodev: " Tyler Retzlaff
2024-04-03 21:50     ` Stephen Hemminger
2024-04-04 17:51 ` [PATCH v11 0/4] remove use of RTE_MARKER fields in libraries Tyler Retzlaff
2024-04-04 17:51   ` [PATCH v11 1/4] net/i40e: use inline prefetch function Tyler Retzlaff
2024-04-04 17:51   ` [PATCH v11 2/4] mbuf: remove rte marker fields Tyler Retzlaff
2024-04-04 17:51   ` [PATCH v11 3/4] security: " Tyler Retzlaff
2024-04-04 17:51   ` [PATCH v11 4/4] cryptodev: " Tyler Retzlaff

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