From: Andreas Dilger <andreas.dilger@xxxxxxxxx> Move memory allocation from cfs_crypto_test_hashes() into the function cfs_crypto_performance_test(). Signed-off-by: Andreas Dilger <andreas.dilger@xxxxxxxxx> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5053 Reviewed-on: http://review.whamcloud.com/9990 Reviewed-by: Bob Glossman <bob.glossman@xxxxxxxxx> Reviewed-by: James Simmons <uja.ornl@xxxxxxxxx> Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx> --- .../lustre/lnet/libcfs/linux/linux-crypto.c | 40 +++++++++---------- 1 files changed, 19 insertions(+), 21 deletions(-) diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c index 90d6e08..4857a11 100644 --- a/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c +++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c @@ -307,16 +307,27 @@ EXPORT_SYMBOL(cfs_crypto_hash_final); * \param[in] buf data buffer on which to compute the hash * \param[in] buf_len length of \buf on which to compute hash */ -static void cfs_crypto_performance_test(enum cfs_crypto_hash_alg hash_alg, - const unsigned char *buf, - unsigned int buf_len) +static void cfs_crypto_performance_test(enum cfs_crypto_hash_alg hash_alg) { + int buf_len = max(PAGE_SIZE, 1048576UL); + void *buf; unsigned long start, end; int bcount, err = 0; int sec = 1; /* do test only 1 sec */ + struct page *page; unsigned char hash[CFS_CRYPTO_HASH_DIGESTSIZE_MAX]; unsigned int hash_len = sizeof(hash); + page = alloc_page(GFP_KERNEL); + if (!page) { + err = -ENOMEM; + goto out_err; + } + + buf = kmap(page); + memset(buf, 0xAD, PAGE_SIZE); + kunmap(page); + 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, @@ -325,7 +336,8 @@ static void cfs_crypto_performance_test(enum cfs_crypto_hash_alg hash_alg, break; } end = jiffies; - + __free_page(page); +out_err: if (err) { cfs_crypto_hash_speeds[hash_alg] = -1; CDEBUG(D_INFO, "Crypto hash algorithm %s, err = %d\n", @@ -381,25 +393,11 @@ EXPORT_SYMBOL(cfs_crypto_hash_speed); */ static int cfs_crypto_test_hashes(void) { - unsigned char i; - unsigned char *data; - unsigned int j; - /* Data block size for testing hash. Maximum - * kmalloc size for 2.6.18 kernel is 128K - */ - unsigned int data_len = 1 * 128 * 1024; - - data = kmalloc(data_len, 0); - if (!data) - return -ENOMEM; - - for (j = 0; j < data_len; j++) - data[j] = j & 0xff; + enum cfs_crypto_hash_alg hash_alg; - for (i = 0; i < CFS_HASH_ALG_MAX; i++) - cfs_crypto_performance_test(i, data, data_len); + for (hash_alg = 0; hash_alg < CFS_HASH_ALG_MAX; hash_alg++) + cfs_crypto_performance_test(hash_alg); - kfree(data); return 0; } -- 1.7.1 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
