Rename modules to module and update references

1 files changed, 129 insertions, 0 deletions

diff --git a/module/splat/splat-random.c b/module/splat/splat-random.c
new file mode 100644
index 000000000..c96dd480c
--- /dev/null
+++ b/module/splat/splat-random.c
@@ -0,0 +1,129 @@
+/*
+ *  This file is part of the SPL: Solaris Porting Layer.
+ *
+ *  Copyright (c) 2008 Lawrence Livermore National Security, LLC.
+ *  Produced at Lawrence Livermore National Laboratory
+ *  Written by:
+ *          Brian Behlendorf <[email protected]>,
+ *          Herb Wartens <[email protected]>,
+ *          Jim Garlick <[email protected]>
+ *  UCRL-CODE-235197
+ *
+ *  This is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This is distributed in the hope that it will be useful, but WITHOUT
+ *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ *  for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
+ */
+
+#include "splat-internal.h"
+
+#define SPLAT_SUBSYSTEM_KRNG		0x0300
+#define SPLAT_KRNG_NAME			"krng"
+#define SPLAT_KRNG_DESC			"Kernel Random Number Generator Tests"
+
+#define SPLAT_KRNG_TEST1_ID		0x0301
+#define SPLAT_KRNG_TEST1_NAME		"freq"
+#define SPLAT_KRNG_TEST1_DESC		"Frequency Test"
+
+#define KRNG_NUM_BITS			1048576
+#define KRNG_NUM_BYTES			(KRNG_NUM_BITS >> 3)
+#define KRNG_NUM_BITS_DIV2		(KRNG_NUM_BITS >> 1)
+#define KRNG_ERROR_RANGE		2097
+
+/* Random Number Generator Tests
+   There can be meny more tests on quality of the
+   random number generator.  For now we are only
+   testing the frequency of particular bits.
+   We could also test consecutive sequences,
+   randomness within a particular block, etc.
+   but is probably not necessary for our purposes */
+
+static int
+splat_krng_test1(struct file *file, void *arg)
+{
+	uint8_t *buf;
+	int i, j, diff, num = 0, rc = 0;
+
+	buf = kmalloc(sizeof(*buf) * KRNG_NUM_BYTES, GFP_KERNEL);
+	if (buf == NULL) {
+		rc = -ENOMEM;
+		goto out;
+	}
+
+	memset(buf, 0, sizeof(*buf) * KRNG_NUM_BYTES);
+
+	/* Always succeeds */
+	random_get_pseudo_bytes(buf, sizeof(uint8_t) * KRNG_NUM_BYTES);
+
+	for (i = 0; i < KRNG_NUM_BYTES; i++) {
+		uint8_t tmp = buf[i];
+		for (j = 0; j < 8; j++) {
+			uint8_t tmp2 = ((tmp >> j) & 0x01);
+			if (tmp2 == 1) {
+				num++;
+			}
+		}
+	}
+
+	kfree(buf);
+
+	diff = KRNG_NUM_BITS_DIV2 - num;
+	if (diff < 0)
+		diff *= -1;
+
+	splat_print(file, "Test 1 Number of ones: %d\n", num);
+	splat_print(file, "Test 1 Difference from expected: %d Allowed: %d\n",
+                  diff, KRNG_ERROR_RANGE);
+
+	if (diff > KRNG_ERROR_RANGE)
+		rc = -ERANGE;
+out:
+	return rc;
+}
+
+splat_subsystem_t *
+splat_krng_init(void)
+{
+        splat_subsystem_t *sub;
+
+        sub = kmalloc(sizeof(*sub), GFP_KERNEL);
+        if (sub == NULL)
+                return NULL;
+
+        memset(sub, 0, sizeof(*sub));
+        strncpy(sub->desc.name, SPLAT_KRNG_NAME, SPLAT_NAME_SIZE);
+	strncpy(sub->desc.desc, SPLAT_KRNG_DESC, SPLAT_DESC_SIZE);
+        INIT_LIST_HEAD(&sub->subsystem_list);
+	INIT_LIST_HEAD(&sub->test_list);
+        spin_lock_init(&sub->test_lock);
+        sub->desc.id = SPLAT_SUBSYSTEM_KRNG;
+
+        SPLAT_TEST_INIT(sub, SPLAT_KRNG_TEST1_NAME, SPLAT_KRNG_TEST1_DESC,
+	              SPLAT_KRNG_TEST1_ID, splat_krng_test1);
+
+        return sub;
+}
+
+void
+splat_krng_fini(splat_subsystem_t *sub)
+{
+        ASSERT(sub);
+
+        SPLAT_TEST_FINI(sub, SPLAT_KRNG_TEST1_ID);
+
+        kfree(sub);
+}
+
+int
+splat_krng_id(void) {
+        return SPLAT_SUBSYSTEM_KRNG;
+}