From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1 4/7] test_hexdump: replace magic numbers by their meaning
Date: Thu, 19 Nov 2015 11:08:23 +0100 [thread overview]
Message-ID: <87poz6s3mw.fsf@rasmusvillemoes.dk> (raw)
In-Reply-To: <1447259718-19647-5-git-send-email-andriy.shevchenko@linux.intel.com> (Andy Shevchenko's message of "Wed, 11 Nov 2015 18:35:15 +0200")
On Wed, Nov 11 2015, Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote:
> The magic numbers of the length are converted to their actual meaning, such as
> end of the buffer with and without ASCII part.
>
> We don't touch the rest magic constants that will be removed in the following
> commits.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
> lib/test_hexdump.c | 13 +++++++++----
> 1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/lib/test_hexdump.c b/lib/test_hexdump.c
> index 15a6440..a3e3b01 100644
> --- a/lib/test_hexdump.c
> +++ b/lib/test_hexdump.c
> @@ -130,18 +130,23 @@ static void __init test_hexdump_overflow(size_t buflen, bool ascii)
> {
> char buf[TEST_HEXDUMP_BUF_SIZE];
> const char *t = test_data_1_le[0];
> + size_t len = 1;
> size_t l = buflen;
> + int rs = 16, gs = 1;
> + int ae, he, e, r;
> bool a;
> - int e, r;
>
> memset(buf, ' ', sizeof(buf));
>
> - r = hex_dump_to_buffer(data_b, 1, 16, 1, buf, buflen, ascii);
> + r = hex_dump_to_buffer(data_b, len, rs, gs, buf, buflen, ascii);
> +
> + ae = rs * 2 /* hex */ + rs / gs /* spaces */ + 1 /* space */ + len /* ascii */;
> + he = (gs * 2 /* hex */ + 1 /* space */) * len / gs - 1 /* no trailing space */;
This computation seems to rely on len being an exact multiple of gs -
which of course it is in this case. hex_dump_to_buffer also enforces
it by setting groupsize to 1 when it's not the case, but that doesn't
really help us here. So maybe an extra comment would be justified.
Rasmus
next prev parent reply other threads:[~2015-11-19 10:08 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-11 16:35 [PATCH v1 0/7] hexdump: update test suite Andy Shevchenko
2015-11-11 16:35 ` [PATCH v1 1/7] test_hexdump: rename to test_hexdump Andy Shevchenko
2015-11-19 10:05 ` Rasmus Villemoes
2015-11-11 16:35 ` [PATCH v1 2/7] test_hexdump: introduce test_hexdump_prepare_test() helper Andy Shevchenko
2015-11-19 10:05 ` Rasmus Villemoes
2015-11-11 16:35 ` [PATCH v1 3/7] test_hexdump: go through all possible lengths of buffer Andy Shevchenko
2015-11-19 10:07 ` Rasmus Villemoes
2015-11-20 16:58 ` Andy Shevchenko
2015-11-23 8:59 ` Rasmus Villemoes
2015-11-26 15:22 ` Andy Shevchenko
2015-11-11 16:35 ` [PATCH v1 4/7] test_hexdump: replace magic numbers by their meaning Andy Shevchenko
2015-11-19 10:08 ` Rasmus Villemoes [this message]
2015-11-20 16:56 ` Andy Shevchenko
2015-11-11 16:35 ` [PATCH v1 5/7] test_hexdump: check all bytes in real buffer Andy Shevchenko
2015-11-19 10:11 ` Rasmus Villemoes
2015-11-20 16:55 ` Andy Shevchenko
2015-11-23 9:28 ` Rasmus Villemoes
2015-11-11 16:35 ` [PATCH v1 6/7] test_hexdump: test all possible group sizes for overflow Andy Shevchenko
2015-11-19 10:14 ` Rasmus Villemoes
2015-11-20 16:43 ` Andy Shevchenko
2015-11-23 9:36 ` Rasmus Villemoes
2015-11-11 16:35 ` [PATCH v1 7/7] test_hexdump: print statistics at the end Andy Shevchenko
2015-11-19 10:16 ` Rasmus Villemoes
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