Re: [PATCH 1/3] eal/drivers: prefix driver REGISTER macros with EAL

[Thomas Monjalon <thomas.monjalon@6wind.com>]

2016-10-11 12:06, Shreyansh Jain:
> On Monday 10 October 2016 06:26 PM, Neil Horman wrote:
> > On Sat, Oct 08, 2016 at 01:00:59PM +0000, Shreyansh Jain wrote:
> >> Hi Thomas,
> >>
> >>> -----Original Message-----
> >>> From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> >>> Sent: Friday, October 07, 2016 7:22 PM
> >>> To: Shreyansh Jain <shreyansh.jain@nxp.com>
> >>> Cc: david.marchand@6wind.com; dev@dpdk.org
> >>> Subject: Re: [PATCH 1/3] eal/drivers: prefix driver REGISTER macros with EAL
> >>>
> >>> 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.
> >>
> >> Sorry, I should have been clearer in my statement.
> >> I meant, I didn't think eal_pci_vfio.o had anything of interest for the PMD tool and hence the mk files would have skipped over it in absence of a match.
> >> I understand that PMDINFO would run on all files.
> >>
> > Thats incorrect, the Makefile does a REGEX search for appropriate registration
> > macros that imply the need for pmdinfo to run.  If its running on an
> > inappropriate file its because your new macros inadvertently match the current
> > regex, hence my suggestion that the regex should be tuned to be more specific
> 
> Agree. Thats is what I wanted to clarify as stated below: 
> "...EAL_REGISTER_* (macro name has changed since) is matching 
> EAL_REGISTER_TAILQ..".
> 
> As for 'more specific' match - I did suggest [2] a longer more specific 
> version but Thomas had a different view point [1]. You can have a look 
> at [2] and let me know your suggestion or if that is wrong.
> 
> [1] http://dpdk.org/ml/archives/dev/2016-October/048425.html
> [2] http://dpdk.org/ml/archives/dev/2016-October/048407.html

I do not have a different point of view :)
We need to be more specific than EAL_REGISTER_*.
And RTE_PMD_REGISTER_* is specific enough. That's all :)