Commit 1bc55f79 authored Mar 26, 2016 by Andreas Dilger Committed by Greg Kroah-Hartman Mar 29, 2016

staging: lustre: libcfs: calculate crypto performance using pages



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>

parent 78675cb1

drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c

+17 −2

Original line number	Diff line number	Diff line
		@@ -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;
		}