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Fletcher4: Incremental updates and ctx calculation

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Fixes ABI issues with fletcher4 code, adds support for
incremental updates, and adds ztest method for testing.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Chunwei Chen <david.chen@osnexus.com>
Signed-off-by: Gvozden Neskovic <neskovic@gmail.com>
Closes #5164
This commit is contained in:
Brian Behlendorf
2016-10-07 12:44:12 -07:00
committed by GitHub
parent 48f783de79 5bf703b8f3
commit 482cd9ee69
7 changed files with 436 additions and 206 deletions
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cmd/ztest/ztest.c
+78
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@@ -332,6 +332,7 @@ ztest_func_t ztest_split_pool;
ztest_func_t ztest_reguid;
ztest_func_t ztest_spa_upgrade;
ztest_func_t ztest_fletcher;
ztest_func_t ztest_fletcher_incr;
ztest_func_t ztest_verify_dnode_bt;
uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */
@@ -379,6 +380,7 @@ ztest_info_t ztest_info[] = {
ZTI_INIT(ztest_vdev_add_remove, 1, &ztest_opts.zo_vdevtime),
ZTI_INIT(ztest_vdev_aux_add_remove, 1, &ztest_opts.zo_vdevtime),
ZTI_INIT(ztest_fletcher, 1, &zopt_rarely),
ZTI_INIT(ztest_fletcher_incr, 1, &zopt_rarely),
ZTI_INIT(ztest_verify_dnode_bt, 1, &zopt_sometimes),
};
@@ -5674,6 +5676,82 @@ ztest_fletcher(ztest_ds_t *zd, uint64_t id)
}
}
void
ztest_fletcher_incr(ztest_ds_t *zd, uint64_t id)
{
void *buf;
size_t size;
int *ptr;
int i;
zio_cksum_t zc_ref;
zio_cksum_t zc_ref_bswap;
hrtime_t end = gethrtime() + NANOSEC;
while (gethrtime() <= end) {
int run_count = 100;
size = ztest_random_blocksize();
buf = umem_alloc(size, UMEM_NOFAIL);
for (i = 0, ptr = buf; i < size / sizeof (*ptr); i++, ptr++)
*ptr = ztest_random(UINT_MAX);
VERIFY0(fletcher_4_impl_set("scalar"));
fletcher_4_native(buf, size, NULL, &zc_ref);
fletcher_4_byteswap(buf, size, NULL, &zc_ref_bswap);
VERIFY0(fletcher_4_impl_set("cycle"));
while (run_count-- > 0) {
zio_cksum_t zc;
zio_cksum_t zc_bswap;
size_t pos = 0;
ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
ZIO_SET_CHECKSUM(&zc_bswap, 0, 0, 0, 0);
while (pos < size) {
size_t inc = 64 * ztest_random(size / 67);
/* sometimes add few bytes to test non-simd */
if (ztest_random(100) < 10)
inc += P2ALIGN(ztest_random(64),
sizeof (uint32_t));
if (inc > (size - pos))
inc = size - pos;
fletcher_4_incremental_native(buf + pos, inc,
&zc);
fletcher_4_incremental_byteswap(buf + pos, inc,
&zc_bswap);
pos += inc;
}
VERIFY3U(pos, ==, size);
VERIFY(ZIO_CHECKSUM_EQUAL(zc, zc_ref));
VERIFY(ZIO_CHECKSUM_EQUAL(zc_bswap, zc_ref_bswap));
/*
* verify if incremental on the whole buffer is
* equivalent to non-incremental version
*/
ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
ZIO_SET_CHECKSUM(&zc_bswap, 0, 0, 0, 0);
fletcher_4_incremental_native(buf, size, &zc);
fletcher_4_incremental_byteswap(buf, size, &zc_bswap);
VERIFY(ZIO_CHECKSUM_EQUAL(zc, zc_ref));
VERIFY(ZIO_CHECKSUM_EQUAL(zc_bswap, zc_ref_bswap));
}
umem_free(buf, size);
}
}
static int
ztest_check_path(char *path)
{