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From: "William Breathitt Gray" <vilhelm.gray@gmail.com>
To: "linus.walleij@linaro.org" <linus.walleij@linaro.org>,
	"bgolaszewski@baylibre.com" <bgolaszewski@baylibre.com>,
	"akpm@linux-foundation.org" <akpm@linux-foundation.org>
Cc: "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
	"preid@electromag.com.au" <preid@electromag.com.au>,
	"yamada.masahiro@socionext.com" <yamada.masahiro@socionext.com>,
	"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
	"linux@rasmusvillemoes.dk" <linux@rasmusvillemoes.dk>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"morten.tiljeset@prevas.dk" <morten.tiljeset@prevas.dk>,
	"sean.nyekjaer@prevas.dk" <sean.nyekjaer@prevas.dk>,
	"linux-gpio@vger.kernel.org" <linux-gpio@vger.kernel.org>,
	Andy Shevchenko <andy.shevchenko@gmail.com>,
	"lukas@wunner.de" <lukas@wunner.de>,
	"geert@linux-m68k.org" <geert@linux-m68k.org>,
	William Breathitt Gray <vilhelm.gray@gmail.com>,
	"andriy.shevchenko@linux.intel.com"
	<andriy.shevchenko@linux.intel.com>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>
Subject: [PATCH v17 02/14] lib/test_bitmap.c: Add for_each_set_clump8 test cases
Date: Wed,  9 Oct 2019 11:27:00 -0400
Message-ID: <febc0fb8151e3e3fdd61c34da9193d1c4d7e6c12.1570633189.git.vilhelm.gray@gmail.com> (raw)
Message-ID: <20191009152700.-9T4TcST5li6PTafol7soM-IKQXu477Gu0mV-c8Bq-k@z> (raw)
In-Reply-To: <cover.1570633189.git.vilhelm.gray@gmail.com>

The introduction of the for_each_set_clump8 macro warrants test cases to
verify the implementation. This patch adds test case checks for whether
an out-of-bounds clump index is returned, a zero clump is returned, or
the returned clump value differs from the expected clump value.

Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
---
 lib/test_bitmap.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index 51a98f7ee79e..dc167c13eb39 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -92,6 +92,36 @@ __check_eq_u32_array(const char *srcfile, unsigned int line,
 	return true;
 }
 
+static bool __init __check_eq_clump8(const char *srcfile, unsigned int line,
+				    const unsigned int offset,
+				    const unsigned int size,
+				    const unsigned char *const clump_exp,
+				    const unsigned long *const clump)
+{
+	unsigned long exp;
+
+	if (offset >= size) {
+		pr_warn("[%s:%u] bit offset for clump out-of-bounds: expected less than %u, got %u\n",
+			srcfile, line, size, offset);
+		return false;
+	}
+
+	exp = clump_exp[offset / 8];
+	if (!exp) {
+		pr_warn("[%s:%u] bit offset for zero clump: expected nonzero clump, got bit offset %u with clump value 0",
+			srcfile, line, offset);
+		return false;
+	}
+
+	if (*clump != exp) {
+		pr_warn("[%s:%u] expected clump value of 0x%lX, got clump value of 0x%lX",
+			srcfile, line, exp, *clump);
+		return false;
+	}
+
+	return true;
+}
+
 #define __expect_eq(suffix, ...)					\
 	({								\
 		int result = 0;						\
@@ -108,6 +138,7 @@ __check_eq_u32_array(const char *srcfile, unsigned int line,
 #define expect_eq_bitmap(...)		__expect_eq(bitmap, ##__VA_ARGS__)
 #define expect_eq_pbl(...)		__expect_eq(pbl, ##__VA_ARGS__)
 #define expect_eq_u32_array(...)	__expect_eq(u32_array, ##__VA_ARGS__)
+#define expect_eq_clump8(...)		__expect_eq(clump8, ##__VA_ARGS__)
 
 static void __init test_zero_clear(void)
 {
@@ -404,6 +435,39 @@ static void noinline __init test_mem_optimisations(void)
 	}
 }
 
+static const unsigned char clump_exp[] __initconst = {
+	0x01,	/* 1 bit set */
+	0x02,	/* non-edge 1 bit set */
+	0x00,	/* zero bits set */
+	0x38,	/* 3 bits set across 4-bit boundary */
+	0x38,	/* Repeated clump */
+	0x0F,	/* 4 bits set */
+	0xFF,	/* all bits set */
+	0x05,	/* non-adjacent 2 bits set */
+};
+
+static void __init test_for_each_set_clump8(void)
+{
+#define CLUMP_EXP_NUMBITS 64
+	DECLARE_BITMAP(bits, CLUMP_EXP_NUMBITS);
+	unsigned int start;
+	unsigned long clump;
+
+	/* set bitmap to test case */
+	bitmap_zero(bits, CLUMP_EXP_NUMBITS);
+	bitmap_set(bits, 0, 1);		/* 0x01 */
+	bitmap_set(bits, 9, 1);		/* 0x02 */
+	bitmap_set(bits, 27, 3);	/* 0x28 */
+	bitmap_set(bits, 35, 3);	/* 0x28 */
+	bitmap_set(bits, 40, 4);	/* 0x0F */
+	bitmap_set(bits, 48, 8);	/* 0xFF */
+	bitmap_set(bits, 56, 1);	/* 0x05 - part 1 */
+	bitmap_set(bits, 58, 1);	/* 0x05 - part 2 */
+
+	for_each_set_clump8(start, clump, bits, CLUMP_EXP_NUMBITS)
+		expect_eq_clump8(start, CLUMP_EXP_NUMBITS, clump_exp, &clump);
+}
+
 static void __init selftest(void)
 {
 	test_zero_clear();
@@ -413,6 +477,7 @@ static void __init selftest(void)
 	test_bitmap_parselist();
 	test_bitmap_parselist_user();
 	test_mem_optimisations();
+	test_for_each_set_clump8();
 }
 
 KSTM_MODULE_LOADERS(test_bitmap);
-- 
2.23.0



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Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-09 15:26 [PATCH v17 00/14] Introduce the for_each_set_clump8 macro William Breathitt Gray
2019-10-09 15:26 ` William Breathitt Gray
2019-10-09 15:26 ` [PATCH v17 01/14] bitops: " William Breathitt Gray
2019-10-09 15:26   ` William Breathitt Gray
2019-10-09 16:28   ` Masahiro Yamada
2019-10-09 16:28     ` Masahiro Yamada
2019-10-09 17:02     ` William Breathitt Gray
2019-10-09 17:09     ` Andy Shevchenko
2019-10-09 18:54       ` Geert Uytterhoeven
2019-10-10  2:28         ` Masahiro Yamada
2019-10-10  5:49           ` Andy Shevchenko
2019-10-10  6:29             ` Geert Uytterhoeven
2019-10-10  7:41               ` Andy Shevchenko
2019-10-10  7:49                 ` Geert Uytterhoeven
2019-10-10  8:07                   ` Andy Shevchenko
2019-10-10  8:21                     ` Geert Uytterhoeven
2019-10-10 13:12                       ` William Breathitt Gray
2019-10-09 15:27 ` William Breathitt Gray [this message]
2019-10-09 15:27   ` [PATCH v17 02/14] lib/test_bitmap.c: Add for_each_set_clump8 test cases William Breathitt Gray
2019-10-09 15:27 ` [PATCH v17 03/14] gpio: 104-dio-48e: Utilize for_each_set_clump8 macro William Breathitt Gray
2019-10-09 15:27 ` [PATCH v17 04/14] gpio: 104-idi-48: " William Breathitt Gray
2019-10-09 15:27   ` William Breathitt Gray
2019-10-09 15:27 ` [PATCH v17 05/14] gpio: gpio-mm: " William Breathitt Gray
2019-10-09 15:27 ` [PATCH v17 06/14] gpio: ws16c48: " William Breathitt Gray
2019-10-09 15:27 ` [PATCH v17 07/14] gpio: pci-idio-16: " William Breathitt Gray
2019-10-09 15:27   ` William Breathitt Gray
2019-10-09 15:27 ` [PATCH v17 08/14] gpio: pcie-idio-24: " William Breathitt Gray
2019-10-09 15:27   ` William Breathitt Gray
2019-10-09 15:27 ` [PATCH v17 09/14] gpio: uniphier: " William Breathitt Gray
2019-10-09 15:27   ` William Breathitt Gray
2019-10-09 16:33   ` Masahiro Yamada
2019-10-09 16:33     ` Masahiro Yamada
2019-10-09 17:05     ` William Breathitt Gray
2019-10-09 15:27 ` [PATCH v17 10/14] gpio: 74x164: Utilize the " William Breathitt Gray
2019-10-09 15:27   ` William Breathitt Gray
2019-10-09 15:27 ` [PATCH v17 11/14] thermal: intel: intel_soc_dts_iosf: Utilize " William Breathitt Gray
2019-10-09 15:27 ` [PATCH v17 12/14] gpio: pisosr: Utilize the " William Breathitt Gray
2019-10-09 15:27   ` William Breathitt Gray
2019-10-09 15:27 ` [PATCH v17 13/14] gpio: max3191x: " William Breathitt Gray
2019-10-09 15:27   ` William Breathitt Gray
2019-10-09 15:27 ` [PATCH v17 14/14] gpio: pca953x: " William Breathitt Gray
2019-10-09 15:27   ` William Breathitt Gray

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