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| author | Ard Biesheuvel <ardb@kernel.org> | 2020-12-08 15:34:41 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-01-03 08:41:34 +1100 |
| commit | 303fd3e1c771077e32e96e5788817f025f0067e2 (patch) | |
| tree | 2bcc909ead3481c11260807606f258be544a7c32 /crypto/tcrypt.c | |
| parent | ddf169a98f01d6fd46295ec0dd4c1d6385be65d4 (diff) | |
| download | lwn-303fd3e1c771077e32e96e5788817f025f0067e2.tar.gz lwn-303fd3e1c771077e32e96e5788817f025f0067e2.zip | |
crypto: tcrypt - avoid signed overflow in byte count
The signed long type used for printing the number of bytes processed in
tcrypt benchmarks limits the range to -/+ 2 GiB, which is not sufficient
to cover the performance of common accelerated ciphers such as AES-NI
when benchmarked with sec=1. So switch to u64 instead.
While at it, fix up a missing printk->pr_cont conversion in the AEAD
benchmark.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/tcrypt.c')
| -rw-r--r-- | crypto/tcrypt.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c index a647bb298fbc..a4a11d2b57bd 100644 --- a/crypto/tcrypt.c +++ b/crypto/tcrypt.c @@ -199,8 +199,8 @@ static int test_mb_aead_jiffies(struct test_mb_aead_data *data, int enc, goto out; } - pr_cont("%d operations in %d seconds (%ld bytes)\n", - bcount * num_mb, secs, (long)bcount * blen * num_mb); + pr_cont("%d operations in %d seconds (%llu bytes)\n", + bcount * num_mb, secs, (u64)bcount * blen * num_mb); out: kfree(rc); @@ -471,8 +471,8 @@ static int test_aead_jiffies(struct aead_request *req, int enc, return ret; } - printk("%d operations in %d seconds (%ld bytes)\n", - bcount, secs, (long)bcount * blen); + pr_cont("%d operations in %d seconds (%llu bytes)\n", + bcount, secs, (u64)bcount * blen); return 0; } @@ -764,8 +764,8 @@ static int test_mb_ahash_jiffies(struct test_mb_ahash_data *data, int blen, goto out; } - pr_cont("%d operations in %d seconds (%ld bytes)\n", - bcount * num_mb, secs, (long)bcount * blen * num_mb); + pr_cont("%d operations in %d seconds (%llu bytes)\n", + bcount * num_mb, secs, (u64)bcount * blen * num_mb); out: kfree(rc); @@ -1201,8 +1201,8 @@ static int test_mb_acipher_jiffies(struct test_mb_skcipher_data *data, int enc, goto out; } - pr_cont("%d operations in %d seconds (%ld bytes)\n", - bcount * num_mb, secs, (long)bcount * blen * num_mb); + pr_cont("%d operations in %d seconds (%llu bytes)\n", + bcount * num_mb, secs, (u64)bcount * blen * num_mb); out: kfree(rc); @@ -1441,8 +1441,8 @@ static int test_acipher_jiffies(struct skcipher_request *req, int enc, return ret; } - pr_cont("%d operations in %d seconds (%ld bytes)\n", - bcount, secs, (long)bcount * blen); + pr_cont("%d operations in %d seconds (%llu bytes)\n", + bcount, secs, (u64)bcount * blen); return 0; } |