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staging: lustre: libcfs: calculate crypto performance using pages

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Use alloc_page() and use cfs_crypto_hash_update_page()
to compute the hash instead of cfs_crypto_hash_digest(), since
tgt_checksum_bulk() computes the hash by page anyway.

Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5279
Reviewed-on: http://review.whamcloud.com/10982
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Alexander Boyko <alexander_boyko@xyratex.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andreas Dilger
2016-03-26 15:40:56 -04:00
committed by Greg Kroah-Hartman
parent 78675cb1ab
commit 1bc55f796a
1 changed files with 17 additions and 2 deletions
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19
drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c
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@@ -330,8 +330,23 @@ static void cfs_crypto_performance_test(enum cfs_crypto_hash_alg hash_alg)
for (start = jiffies, end = start + sec * HZ, bcount = 0;
time_before(jiffies, end); bcount++) {
err = cfs_crypto_hash_digest(hash_alg, buf, buf_len, NULL, 0,
hash, &hash_len);
struct cfs_crypto_hash_desc *hdesc;
int i;
hdesc = cfs_crypto_hash_init(hash_alg, NULL, 0);
if (IS_ERR(hdesc)) {
err = PTR_ERR(hdesc);
break;
}
for (i = 0; i < buf_len / PAGE_SIZE; i++) {
err = cfs_crypto_hash_update_page(hdesc, page, 0,
PAGE_SIZE);
if (err)
break;
}
err = cfs_crypto_hash_final(hdesc, hash, &hash_len);
if (err)
break;
}