linux-kernel - Re: [PATCH 10/10] tools/power/x86: A tool to validate Intel Speed Select commands

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Date:   Sat, 29 Jun 2019 19:00:49 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc:     Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        Andriy Shevchenko <andriy.shevchenko@...el.com>,
        Jonathan Corbet <corbet@....net>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Alan Cox <alan@...ux.intel.com>, Len Brown <lenb@...nel.org>,
        prarit@...hat.com, darcari@...hat.com,
        Linux Documentation List <linux-doc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>
Subject: Re: [PATCH 10/10] tools/power/x86: A tool to validate Intel Speed
 Select commands

On Sat, Jun 29, 2019 at 5:53 PM Srinivas Pandruvada
<srinivas.pandruvada@...ux.intel.com> wrote:
> On Sat, 2019-06-29 at 17:31 +0300, Andy Shevchenko wrote:
> > On Thu, Jun 27, 2019 at 1:39 AM Srinivas Pandruvada
> > <srinivas.pandruvada@...ux.intel.com> wrote:

> > > +++ b/tools/power/x86/intel_speed_select/Makefile
> >
> > My experience with some tools are not good in order of their build
> > process.
> > Can this one use tools build infrastructure from the day 1?
> Can you give some pointers?

Sure.

At least simple ones are under tools/gpio, tools/iio, etc.

You may compare them to see what's different and what's common and
base Makefile here on that.

I dunno if there is any tool under tools/power to use that, it might
give an example of `descend` feature in Makefile.

> > > @@ -0,0 +1,31 @@
> > > +# SPDX-License-Identifier: GPL-2.0
> > > +CC             = $(CROSS_COMPILE)gcc
> > > +BUILD_OUTPUT   := $(CURDIR)
> > > +PREFIX         ?= /usr
> > > +DESTDIR                ?=
> > > +
> > > +override CFLAGS += -D__EXPORTED_HEADERS__ -Wall -D_GNU_SOURCE
> > > +override CFLAGS += -I$(CURDIR)/../../../../include/uapi/
> > > +override CFLAGS += -I$(CURDIR)/../../../../include/
> > > +
> > > +%: %.c
> > > +       @mkdir -p $(BUILD_OUTPUT)
> > > +       $(CC) $(CFLAGS) $< -o $(BUILD_OUTPUT)/$@ $(LDFLAGS)
> > > +
> > > +DEPS = isst.h
> > > +OBJ = isst_config.o isst_core.o isst_display.o
> > > +
> > > +%.o: %.c $(DEPS)
> > > +       $(CC) -c -o $(BUILD_OUTPUT)/$@ $< $(CFLAGS)
> > > +
> > > +intel-speed-select: $(OBJ)
> > > +       $(CC) -o $(BUILD_OUTPUT)/$@ $^ $(CFLAGS)
> > > +
> > > +.PHONY : clean
> > > +clean :
> > > +       @rm -f $(BUILD_OUTPUT)/intel-speed-select
> > > +       @rm -f $(BUILD_OUTPUT)/*.o
> > > +
> > > +install : intel-speed-select
> > > +       install -d $(DESTDIR)$(PREFIX)/sbin
> > > +       install $(BUILD_OUTPUT)/intel-speed-select
> > > $(DESTDIR)$(PREFIX)/sbin/intel-speed-select

-- 
With Best Regards,
Andy Shevchenko