linux-kernel - Re: [Patch 4/4] tools/selftests: add mq_perf

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Date:	Tue, 1 May 2012 12:53:45 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Doug Ledford <dledford@...hat.com>
Cc:	linux-kernel@...r.kernel.org, sfr@...b.auug.org.au,
	Manfred Spraul <manfred@...orfullife.com>
Subject: Re: [Patch 4/4] tools/selftests: add mq_perf_tests

On Tue,  1 May 2012 13:50:55 -0400
Doug Ledford <dledford@...hat.com> wrote:

> Add the mq_perf_tests tool I used when creating my mq performance patch.
> Also add a local .gitignore to keep the binaries from showing up in
> git status output.
> 

hm, this code sends checkpatch berzerk.  I do think that selftests code
should match regular kernel coding - after all, kernel developers are
the ones who will be reading and modifying the code.

> diff --git a/tools/testing/selftests/mqueue/mq_perf_tests.c b/tools/testing/selftests/mqueue/mq_perf_tests.c

hm, I didn't have <popt.h>.  On RH that's the popt-devel RPM.  On this
Ubuntu(ish) machine it's libpopt-dev.

On an x86_64 build I get these:

mq_open_tests.c: In function 'main':
mq_open_tests.c:295: warning: format '%d' expects type 'int', but argument 2 has type 'rlim_t'
mq_open_tests.c:296: warning: format '%d' expects type 'int', but argument 2 has type 'rlim_t'
mq_open_tests.c:311: warning: format '%d' expects type 'int', but argument 2 has type 'rlim_t'
mq_open_tests.c:312: warning: format '%d' expects type 'int', but argument 2 has type 'rlim_t'
gcc -O2 -lrt -lpthread -lpopt -o mq_perf_tests mq_perf_tests.c
mq_perf_tests.c: In function 'open_queue':
mq_perf_tests.c:299: warning: format '%d' expects type 'int', but argument 2 has type 'long int'
mq_perf_tests.c:300: warning: format '%d' expects type 'int', but argument 2 has type 'long int'
mq_perf_tests.c:301: warning: format '%d' expects type 'int', but argument 2 has type 'long int'
mq_perf_tests.c: In function 'perf_test_thread':
mq_perf_tests.c:441: warning: format '%d' expects type 'int', but argument 2 has type 'long int'
mq_perf_tests.c:456: warning: format '%d' expects type 'int', but argument 2 has type '__time_t'
mq_perf_tests.c:456: warning: format '%d' expects type 'int', but argument 3 has type 'long int'
mq_perf_tests.c:459: warning: format '%d' expects type 'int', but argument 2 has type 'long long unsigned int'
mq_perf_tests.c:461: warning: format '%d' expects type 'int', but argument 2 has type '__time_t'
mq_perf_tests.c:461: warning: format '%d' expects type 'int', but argument 3 has type 'long int'
mq_perf_tests.c:464: warning: format '%d' expects type 'int', but argument 2 has type 'long long unsigned int'
mq_perf_tests.c:468: warning: format not a string literal and no format arguments
mq_perf_tests.c:495: warning: format '%d' expects type 'int', but argument 2 has type '__time_t'
mq_perf_tests.c:495: warning: format '%d' expects type 'int', but argument 3 has type 'long int'
mq_perf_tests.c:498: warning: format '%d' expects type 'int', but argument 2 has type 'long long unsigned int'
mq_perf_tests.c:500: warning: format '%d' expects type 'int', but argument 2 has type '__time_t'
mq_perf_tests.c:500: warning: format '%d' expects type 'int', but argument 3 has type 'long int'
mq_perf_tests.c:503: warning: format '%d' expects type 'int', but argument 2 has type 'long long unsigned int'
mq_perf_tests.c: In function 'main':
mq_perf_tests.c:651: warning: format '%d' expects type 'int', but argument 2 has type 'rlim_t'
mq_perf_tests.c:652: warning: format '%d' expects type 'int', but argument 2 has type 'rlim_t'
mq_perf_tests.c:666: warning: format '%d' expects type 'int', but argument 2 has type 'rlim_t'
mq_perf_tests.c:668: warning: format '%d' expects type 'int', but argument 2 has type 'rlim_t'

I assume part of it is this:

/usr/include/bits/resource.h:typedef __rlim64_t rlim_t;

But I didn't look into the others.  I can do so?
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