linux-kernel - Re: [PATCH 1/6] tpm: sort objects in the Makefile

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Date:   Mon, 5 Mar 2018 15:08:28 -0700
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     "Winkler, Tomas" <tomas.winkler@...el.com>
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        "Usyskin, Alexander" <alexander.usyskin@...el.com>,
        "linux-integrity@...r.kernel.org" <linux-integrity@...r.kernel.org>,
        "linux-security-module@...r.kernel.org" 
        <linux-security-module@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/6] tpm: sort objects in the Makefile

On Mon, Mar 05, 2018 at 09:21:37PM +0000, Winkler, Tomas wrote:
> > On Mon, Mar 05, 2018 at 10:20:12PM +0200, Tomas Winkler wrote:
> > > Make the tpm Makefile a bit more in order by putting objects in one
> > > column and group together tpm2 modules
> > >
> > > Prefer tpm-objs += instead of tpm-y += notation.
> > >
> > > Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
> > > drivers/char/tpm/Makefile | 14 +++++++++++---
> > >  1 file changed, 11 insertions(+), 3 deletions(-)
> > >
> > > diff --git a/drivers/char/tpm/Makefile b/drivers/char/tpm/Makefile
> > > index acd758381c58..2fc0e9a73cd6 100644
> > > +++ b/drivers/char/tpm/Makefile
> > > @@ -3,9 +3,17 @@
> > >  # Makefile for the kernel tpm device drivers.
> > >  #
> > >  obj-$(CONFIG_TCG_TPM) += tpm.o
> > > -tpm-y := tpm-interface.o tpm-dev.o tpm-sysfs.o tpm-chip.o tpm2-cmd.o \
> > > -	 tpm-dev-common.o tpmrm-dev.o tpm1_eventlog.o tpm2_eventlog.o
> > \
> > > -         tpm2-space.o
> > > +tpm-objs := tpm-interface.o
> > > +tpm-objs += tpm-dev.o
> > > +tpm-objs += tpm-chip.o
> > > +tpm-objs += tpm-dev-common.o
> > > +tpm-objs += tpmrm-dev.o
> > > +tpm-objs += tpm-sysfs.o
> > > +tpm-objs += tpm1_eventlog.o
> > > +tpm-objs += tpm2-cmd.o
> > > +tpm-objs += tpm2-space.o
> > > +tpm-objs += tpm2_eventlog.o
> > 
> > If you are going to do this then sort the list please
> 
> I've sorted in that way that in the future will probably will
> compile tpm1- out, you probably mean to alphabetically.

Yes alphabetically.. helps avoid merge conflicts

If you wan to make TPM1 optional then the original pattern was right..

tpm-y += \
   tpm-dev.o \
tpm-$(CONFIG_TPM1) += \
   tpm1_eventlog.o
tpm-$(CONFIG_TPM2) += \
   tpm2_eventlog.o

etc

Jason