From: David Marchand <david.marchand@redhat.com>
To: Bruce Richardson <bruce.richardson@intel.com>
Cc: dev <dev@dpdk.org>, Ma Lihong <lihongx.ma@intel.com>,
Hemant Agrawal <hemant.agrawal@nxp.com>
Subject: Re: [dpdk-dev] [PATCH v2 0/3] Allow overriding of build-time constants
Date: Fri, 16 Oct 2020 18:46:12 +0200 [thread overview]
Message-ID: <CAJFAV8ziDDa2oCr5phai4gZPR6JnETovEJ+HCtyVonfiS99MpQ@mail.gmail.com> (raw)
In-Reply-To: <20201016155558.GB1121@bricha3-MOBL.ger.corp.intel.com>
On Fri, Oct 16, 2020 at 5:56 PM Bruce Richardson
<bruce.richardson@intel.com> wrote:
> > librte_eal.so is indeed built with the 64 value:
> > $ pahole -C rte_mem_config build/install/lib64/librte_eal.so |grep memsegs
> > die__process_function: tag not supported (INVALID)!
> > struct rte_memseg_list memsegs[64]; /* 136 8704 */
> >
> >
> > But no trace of the custom value for external applications:
> > $ grep -r RTE_MAX_MEMSEG_LISTS build/install
> > build/install/include/rte_config.h:#ifndef RTE_MAX_MEMSEG_LISTS
> > build/install/include/rte_config.h:#define RTE_MAX_MEMSEG_LISTS 128
> > Binary file build/install/lib64/librte_eal.a matches
> > Binary file build/install/lib64/librte_eal.so.21.0 matches
> >
> > I can see the same using the meson option -Dc_args.
> >
>
> Good point, I had not thought of external apps using these values.
>
> They are mostly for internal use, so maybe its worthwhile looking to not
> have them in a public header file. What do you think? Is it likely that
> apps would be using some of these values, or needs to know the specifics?
Some are publicly exposed, like RTE_MEMPOOL_CACHE_MAX_SIZE,
RTE_PKTMBUF_HEADROOM, RTE_ETHDEV_RXTX_CALLBACKS,
For those, either we propagate the overriden value to the installed
rte_config.h or we refuse customisation.
--
David Marchand
next prev parent reply other threads:[~2020-10-16 16:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-25 11:44 [dpdk-dev] [PATCH 1/2] config: remove explicit undefinition of unset values Bruce Richardson
2020-08-25 11:44 ` [dpdk-dev] [PATCH 2/2] config: allow overriding some build defaults Bruce Richardson
2020-09-01 5:17 ` Ma, LihongX
2020-09-01 6:07 ` Hemant Agrawal
2020-09-01 9:02 ` Bruce Richardson
2020-09-03 14:50 ` Bruce Richardson
2020-09-03 14:49 ` [dpdk-dev] [PATCH v2 0/3] Allow overriding of build-time constants Bruce Richardson
2020-09-03 14:49 ` [dpdk-dev] [PATCH v2 1/3] config: remove explicit undefinition of unset values Bruce Richardson
2020-09-03 14:49 ` [dpdk-dev] [PATCH v2 2/3] config: allow overriding some build defaults Bruce Richardson
2020-09-03 14:49 ` [dpdk-dev] [PATCH v2 3/3] doc: add notes on overriding extra config values Bruce Richardson
2020-09-03 15:43 ` Hemant Agrawal
2020-10-14 14:20 ` [dpdk-dev] [PATCH v2 0/3] Allow overriding of build-time constants Bruce Richardson
2020-10-15 8:55 ` Chen, BoX C
2020-10-15 9:20 ` Bruce Richardson
2020-10-16 15:47 ` David Marchand
2020-10-16 15:55 ` Bruce Richardson
2020-10-16 16:46 ` David Marchand [this message]
2020-10-19 10:21 ` Bruce Richardson
2020-10-19 21:04 ` Thomas Monjalon
2020-10-20 8:34 ` Bruce Richardson
2020-10-20 10:04 ` Thomas Monjalon
2020-10-20 10:15 ` Bruce Richardson
2020-10-28 16:32 ` Bruce Richardson
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