linux-kernel - Re: [PATCH 2/4] perf: jevents: Program to convert JSON file to C style file

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Date:	Fri, 22 May 2015 10:25:40 -0700
From:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	mingo@...hat.com, ak@...ux.intel.com,
	Michael Ellerman <mpe@...erman.id.au>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Paul Mackerras <paulus@...ba.org>, namhyung@...nel.org,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] perf: jevents: Program to convert JSON file to C
 style file

Jiri Olsa [jolsa@...hat.com] wrote:
| On Tue, May 19, 2015 at 05:02:08PM -0700, Sukadev Bhattiprolu wrote:
| 
| SNIP
| 
| > +int main(int argc, char *argv[])
| > +{
| > +	int rc;
| > +	int flags;
| 
| SNIP
| 
| > +
| > +	rc = uname(&uts);
| > +	if (rc < 0) {
| > +		printf("%s: uname() failed: %s\n", argv[0], strerror(errno));
| > +		goto empty_map;
| > +	}
| > +
| > +	/* TODO: Add other flavors of machine type here */
| > +	if (!strcmp(uts.machine, "ppc64"))
| > +		arch = "powerpc";
| > +	else if (!strcmp(uts.machine, "i686"))
| > +		arch = "x86";
| > +	else if (!strcmp(uts.machine, "x86_64"))
| > +		arch = "x86";
| > +	else {
| > +		printf("%s: Unknown architecture %s\n", argv[0], uts.machine);
| > +		goto empty_map;
| > +	}
| 
| hum, wouldnt it be easier to pass the arch directly from the Makefile,
| we should have it ready in the $(ARCH) variable..

Yes, I will do that and make all three args (arch, start_dir, output_file)
mandatory (jevents won't be run from command line often, it doesn't need
default args).

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