[dpdk-dev] [PATCH 1/3] eal/drivers: prefix driver REGISTER macros with EAL

[Shreyansh Jain]

Hi Neil,

> -----Original Message-----
> From: Neil Horman [mailto:nhorman at tuxdriver.com]
> Sent: Friday, October 07, 2016 7:48 PM
> To: Thomas Monjalon <thomas.monjalon at 6wind.com>
> Cc: Shreyansh Jain <shreyansh.jain at nxp.com>; david.marchand at 6wind.com;
> dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH 1/3] eal/drivers: prefix driver REGISTER
> macros with EAL
> 
> On Fri, Oct 07, 2016 at 03:51:44PM +0200, Thomas Monjalon wrote:
> > 2016-10-07 19:11, Shreyansh Jain:
> > > --- a/mk/internal/rte.compile-pre.mk
> > > +++ b/mk/internal/rte.compile-pre.mk
> > > @@ -87,7 +87,7 @@ endif
> > >   PMDINFO_GEN = $(RTE_SDK_BIN)/app/dpdk-pmdinfogen $@ $@.pmd.c
> > >   PMDINFO_CC = $(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@.pmd.o $@.pmd.c
> > >   PMDINFO_LD = $(CROSS)ld $(LDFLAGS) -r -o $@.o $@.pmd.o $@
> > > -PMDINFO_TO_O = if grep -q 'DRIVER_REGISTER_.*(.*)' $<; then \
> > > +PMDINFO_TO_O = if grep 'EAL_REGISTER_.*(.*)' $<; then \
> > >          echo "$(if $V,$(PMDINFO_GEN),  PMDINFO $@.pmd.c)" && \
> > >          $(PMDINFO_GEN) && \
> > >          echo "$(if $V,$(PMDINFO_CC),  CC $@.pmd.o)" && \
> > >
> > > --->8---
> > >    CC eal_pci_vfio.o
> > >    PMDINFO eal_pci_vfio.o.pmd.c
> > > /bin/sh: 1:
> > > /home/shreyansh/build/DPDK/02_dpdk/x86_64-native-linuxapp-gcc/app/dpdk-
> pmdinfogen:
> > > not found
> > > /home/shreyansh/build/DPDK/02_dpdk/mk/internal/rte.compile-pre.mk:138:
> > > recipe for target 'eal_pci_vfio.o' failed
> > > --->8---
> > >
> > > I don't think PMDINFO should be running on eal_pci_vfio file. Isn't it?
> >
> > Every files are scanned for the pattern.
> >
> > > Is it because EAL_REGISTER_* is matching EAL_REGISTER_TAILQ like macro
> > > as well?
> >
> > Probably.
> > That's another argument in favor of good prefixes.
> > I think you should use RTE_DRIVER_REGISTER_ or better, RTE_PMD_REGISTER_
> Thats what we had, about 4 changes to this macro ago, and yes, that made alot
> more sense, to grep on a more complete version of the macro name to ensure a
> unique match.  You might just look for the regex
> EAL_REGISTER_VDEV|EAL_REGISTER_PCI with grep -E

Thanks. I will use this grep.

> 
> Neil
> 
> 
> 
> > >
> > > I am not very well versed with how PMDINFO is linking with the build
> > > system so any hints/insight into this would be really helpful.
> > >
> > > One I get more clarity on this, I will push a new version of this patch.
> >
> > Thanks
> >

-
Shreyansh