patches for DPDK stable branches
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From: Thomas Monjalon <thomas@monjalon.net>
To: Bruce Richardson <bruce.richardson@intel.com>
Cc: dev@dpdk.org, ncopa@alpinelinux.org, stable@dpdk.org,
	Hemant Agrawal <hemant.agrawal@nxp.com>,
	Sachin Saxena <sachin.saxena@oss.nxp.com>,
	Jakub Grajciar <jgrajcia@cisco.com>,
	Matan Azrad <matan@nvidia.com>,
	Shahaf Shuler <shahafs@nvidia.com>,
	Viacheslav Ovsiienko <viacheslavo@nvidia.com>,
	Cristian Dumitrescu <cristian.dumitrescu@intel.com>,
	John McNamara <john.mcnamara@intel.com>,
	Maxime Coquelin <maxime.coquelin@redhat.com>,
	Chenbo Xia <chenbo.xia@intel.com>,
	Anatoly Burakov <anatoly.burakov@intel.com>,
	Konstantin Ananyev <konstantin.ananyev@intel.com>,
	Marcin Smoczynski <marcinx.smoczynski@intel.com>
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH v5 04/17] build: define _GNU_SOURCE globally
Date: Sun, 28 Feb 2021 13:53:43 +0100	[thread overview]
Message-ID: <9174563.jNpO6MIbjI@thomas> (raw)
In-Reply-To: <2086874.LCvNQC0ieA@thomas>

26/02/2021 11:04, Thomas Monjalon:
> 26/02/2021 10:46, Bruce Richardson:
> > On Fri, Feb 26, 2021 at 10:40:32AM +0100, Thomas Monjalon wrote:
> > > 26/02/2021 10:08, Bruce Richardson:
> > > > On Thu, Feb 25, 2021 at 07:22:37PM +0100, Thomas Monjalon wrote:
> > > > > There was an intent to define _GNU_SOURCE globally,
> > > > > but it was not set in pkg-config for external applications.
> > > > > 
> > > > Is this something that we really want to do, to force all external apps to
> > > > use _GNU_SOURCE when compiling? Do some of our header files rely on
> > > > definitions only available with _GNU_SOURCE? If so, we should probably look
> > > > to remove that dependency rather than mandating the define.
> > > 
> > > From patch 5:
> > > In musl libc, cpu_set_t is defined only if _GNU_SOURCE is defined.
> > > 
> > > If we avoid mandating _GNU_SOURCE,
> > > we must #ifdef functions relying on rte_cpuset_t in the headers:
> > > 	- rte_lcore_cpuset
> > > 	- rte_thread_set_affinity
> > > 	- rte_thread_get_affinity
> > > 	- rte_telemetry_init (internal)
> > > Or a different trick in linux/include/rte_os.h could be:
> > > 	typedef void rte_cpuset_t;
> > > so it allows including files, but not using above functions of course.
> > > 
> > Can we just define _GNU_SOURCE in the header file with rte_cpuset_t?
> 
> That would be the simplest solution yes :)
> I don't really like defining such flag in a header file because
> it impacts all code coming after the include.
> It would mean all includes done after DPDK ones behave differently.
> 
> I vote for the trick:
> #ifdef _GNU_SOURCE
> 	typedef cpu_set_t rte_cpuset_t;
> #else
> 	typedef void rte_cpuset_t;
> #endif
> 
> Opinions?

I changed my mind, I think it is saner to not export functions
which use rte_cpuset_t, if the type is not defined.
The type definition is detected thanks to CPU_SETSIZE
and a new definition is used inside DPDK: RTE_HAS_CPUSET.
I think it is more elegant and easier to debug.
I am sending a v6.



  reply	other threads:[~2021-02-28 12:53 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20190313170657.16688-1-ncopa@alpinelinux.org>
     [not found] ` <20210225182250.1149592-1-thomas@monjalon.net>
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 01/17] eal: fix comment of OS-specific header files Thomas Monjalon
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 02/17] buildtools: fix build with busybox Thomas Monjalon
2021-02-26  9:11     ` Bruce Richardson
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 03/17] build: detect execinfo library on Linux Thomas Monjalon
2021-02-26  9:08     ` Bruce Richardson
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 04/17] build: define _GNU_SOURCE globally Thomas Monjalon
2021-02-26  9:08     ` Bruce Richardson
2021-02-26  9:40       ` Thomas Monjalon
2021-02-26  9:46         ` Bruce Richardson
2021-02-26 10:04           ` Thomas Monjalon
2021-02-28 12:53             ` Thomas Monjalon [this message]
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 05/17] eal/linux: fix build with musl Thomas Monjalon
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 06/17] drivers: fix header includes for musl Thomas Monjalon
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 08/17] bus/pci: support I/O port operations with musl Thomas Monjalon
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 09/17] bus/dpaa: fix 64-bit arch detection Thomas Monjalon
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 10/17] bus/dpaa: fix build with musl Thomas Monjalon
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 11/17] common/dpaax/caamflib: " Thomas Monjalon
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 13/17] net/cxgbe: remove use of uint type Thomas Monjalon
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 14/17] net/igc: " Thomas Monjalon
2021-02-26  0:49     ` Wang, Haiyue
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 15/17] vdpa/mlx5: replace pthread functions unavailable in musl Thomas Monjalon
2021-03-01  7:30     ` Matan Azrad
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 16/17] app/testpmd: fix build with musl Thomas Monjalon
2021-02-25 18:22   ` [dpdk-stable] [PATCH v5 17/17] examples/bbdev: fix header include for musl Thomas Monjalon
     [not found] ` <20210228125353.2436562-1-thomas@monjalon.net>
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 01/17] eal: fix comment of OS-specific header files Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 02/17] buildtools: fix build with busybox Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 03/17] build: detect execinfo library on Linux Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 04/17] build: remove redundant _GNU_SOURCE definitions Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 05/17] eal: fix build with musl Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 06/17] drivers: fix header includes for musl Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 08/17] bus/pci: support I/O port operations with musl Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 09/17] bus/dpaa: fix 64-bit arch detection Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 10/17] bus/dpaa: fix build with musl Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 11/17] common/dpaax/caamflib: " Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 13/17] net/cxgbe: remove use of uint type Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 14/17] net/igc: " Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 15/17] vdpa/mlx5: replace pthread functions unavailable in musl Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 16/17] app/testpmd: fix build with musl Thomas Monjalon
2021-02-28 12:53   ` [dpdk-stable] [PATCH v6 17/17] examples/bbdev: fix header include for musl Thomas Monjalon
     [not found] ` <20210319145730.3555384-1-thomas@monjalon.net>
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 01/17] eal: fix comment of OS-specific header files Thomas Monjalon
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 02/17] buildtools: fix build with busybox Thomas Monjalon
2021-03-22  8:52     ` Kinsella, Ray
2021-03-22  8:55       ` Thomas Monjalon
2021-03-22  9:01         ` Kinsella, Ray
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 03/17] build: detect execinfo library on Linux Thomas Monjalon
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 04/17] build: remove redundant _GNU_SOURCE definitions Thomas Monjalon
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 05/17] eal: fix build with musl Thomas Monjalon
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 07/17] common/dpaax/caamflib: " Thomas Monjalon
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 09/17] bus/dpaa: fix 64-bit arch detection Thomas Monjalon
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 10/17] bus/dpaa: fix build with musl Thomas Monjalon
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 11/17] bus/pci: support I/O port operations " Thomas Monjalon
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 12/17] net/cxgbe: remove use of uint type Thomas Monjalon
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 13/17] net/igc: " Thomas Monjalon
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 14/17] vdpa/mlx5: replace pthread functions unavailable in musl Thomas Monjalon
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 15/17] event/dlb: fix header includes for musl Thomas Monjalon
2021-03-19 15:47     ` McDaniel, Timothy
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 16/17] app/testpmd: fix build with musl Thomas Monjalon
2021-03-19 14:57   ` [dpdk-stable] [PATCH v7 17/17] examples/bbdev: fix header include for musl Thomas Monjalon

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