This allows to test & run multiple parallel crypto ahash contexts.
Each of the test vector under the ahash speed test template is started
under a separate kthread.
Signed-off-by: Vakul Garg <vakul@xxxxxxxxxxxxx>
---
crypto/tcrypt.c | 164 +++++++++++++++++++++++++++++++++++++++++++------------
1 files changed, 129 insertions(+), 35 deletions(-)
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 7ae2130..e879de9 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -33,6 +33,7 @@
#include <linux/jiffies.h>
#include <linux/timex.h>
#include <linux/interrupt.h>
+#include <linux/kthread.h>
#include "tcrypt.h"
#include "internal.h"
@@ -497,9 +498,9 @@ static inline int do_one_ahash_op(struct ahash_request *req, int ret)
}
return ret;
}
-
static int test_ahash_jiffies_digest(struct ahash_request *req, int blen,
- char *out, int sec)
+ char *out, int sec,
+ struct completion *comp)
{
unsigned long start, end;
int bcount;
@@ -512,6 +513,11 @@ static int test_ahash_jiffies_digest(struct ahash_request *req, int blen,
return ret;
}
+ wait_for_completion_interruptible(comp);
+
+ pr_info("test (%5u byte blocks,%5u bytes per update,%4u updates): ",
+ blen, blen, blen/blen);
+
printk("%6u opers/sec, %9lu bytes/sec\n",
bcount / sec, ((long)bcount * blen) / sec);
@@ -519,14 +525,15 @@ static int test_ahash_jiffies_digest(struct ahash_request *req, int blen,
}
static int test_ahash_jiffies(struct ahash_request *req, int blen,
- int plen, char *out, int sec)
+ int plen, char *out, int sec,
+ struct completion *comp)
{
unsigned long start, end;
int bcount, pcount;
int ret;
if (plen == blen)
- return test_ahash_jiffies_digest(req, blen, out, sec);
+ return test_ahash_jiffies_digest(req, blen, out, sec, comp);
for (start = jiffies, end = start + sec * HZ, bcount = 0;
time_before(jiffies, end); bcount++) {
@@ -544,6 +551,11 @@ static int test_ahash_jiffies(struct ahash_request *req, int blen,
return ret;
}
+ wait_for_completion_interruptible(comp);
+
+ pr_info("test (%5u byte blocks,%5u bytes per update,%4u updates): ",
+ blen, plen, blen/plen);
+
pr_cont("%6u opers/sec, %9lu bytes/sec\n",
bcount / sec, ((long)bcount * blen) / sec);
@@ -551,7 +563,7 @@ static int test_ahash_jiffies(struct ahash_request *req, int blen,
}
static int test_ahash_cycles_digest(struct ahash_request *req, int blen,
- char *out)
+ char *out, struct completion *comp)
{
unsigned long cycles = 0;
int ret, i;
@@ -582,6 +594,11 @@ out:
if (ret)
return ret;
+ wait_for_completion_interruptible(comp);
+
+ pr_info("test (%5u byte blocks,%5u bytes per update,%4u updates): ",
+ blen, blen, blen/blen);
+
pr_cont("%6lu cycles/operation, %4lu cycles/byte\n",
cycles / 8, cycles / (8 * blen));
@@ -589,13 +606,13 @@ out:
}
static int test_ahash_cycles(struct ahash_request *req, int blen,
- int plen, char *out)
+ int plen, char *out, struct completion *comp)
{
unsigned long cycles = 0;
int i, pcount, ret;
if (plen == blen)
- return test_ahash_cycles_digest(req, blen, out);
+ return test_ahash_cycles_digest(req, blen, out, comp);
/* Warm-up run. */
for (i = 0; i < 4; i++) {
@@ -636,51 +653,119 @@ static int test_ahash_cycles(struct ahash_request *req, int blen,
}
out:
+
if (ret)
return ret;
+ wait_for_completion_interruptible(comp);
+
+ pr_info("test (%5u byte blocks,%5u bytes per update,%4u updates): ",
+ blen, plen, blen/plen);
+
pr_cont("%6lu cycles/operation, %4lu cycles/byte\n",
cycles / 8, cycles / (8 * blen));
return 0;
}
-static void test_ahash_speed(const char *algo, unsigned int sec,
- struct hash_speed *speed)
+struct hash_test {
+ const char *algo;
+ unsigned int blen;
+ unsigned int plen;
+ unsigned int klen;
+ unsigned int sec;
+ struct completion print;
+ struct completion finish;
+};
+
+static int test_ahash_speed_thread(void *data)
{
struct scatterlist sg[TVMEMSIZE];
struct tcrypt_result tresult;
struct ahash_request *req;
struct crypto_ahash *tfm;
static char output[1024];
- int i, ret;
-
- printk(KERN_INFO "\ntesting speed of async %s\n", algo);
+ int ret;
+ struct hash_test *test = data;
- tfm = crypto_alloc_ahash(algo, 0, 0);
+ tfm = crypto_alloc_ahash(test->algo, 0, 0);
if (IS_ERR(tfm)) {
pr_err("failed to load transform for %s: %ld\n",
- algo, PTR_ERR(tfm));
- return;
+ test->algo, PTR_ERR(tfm));
+ ret = PTR_ERR(tfm);
+ goto stop;
}
if (crypto_ahash_digestsize(tfm) > sizeof(output)) {
pr_err("digestsize(%u) > outputbuffer(%zu)\n",
crypto_ahash_digestsize(tfm), sizeof(output));
- goto out;
+ ret = -EINVAL;
+ goto err;
}
test_hash_sg_init(sg);
req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!req) {
pr_err("ahash request allocation failure\n");
- goto out;
+ ret = PTR_ERR(req);
+ goto err;
}
init_completion(&tresult.completion);
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
tcrypt_complete, &tresult);
+
+ ahash_request_set_crypt(req, sg, output, test->plen);
+
+ if (sec)
+ ret = test_ahash_jiffies(req, test->blen,
+ test->plen, output, sec,
+ &test->print);
+ else
+ ret = test_ahash_cycles(req, test->blen,
+ test->plen, output, &test->print);
+
+ if (ret)
+ pr_err("hashing failed ret=%d\n", ret);
+
+ ahash_request_free(req);
+
+err:
+ crypto_free_ahash(tfm);
+
+stop:
+ complete(&test->finish);
+
+ return ret;
+}
+
+
+static void test_ahash_speed(const char *algo, unsigned int sec,
+ struct hash_speed *speed)
+{
+ int i, num_tests;
+ struct hash_test *tests;
+ struct task_struct **threads;
+
+ pr_info("\ntesting speed of async %s\n", algo);
+
+ /* Count the number of tests to be done */
+ for (i = 0; speed[i].blen != 0; i++)
+ ;
+
+ threads = kzalloc(i * sizeof(struct task_struct *), GFP_KERNEL);
+ if (!threads) {
+ pr_err("Memory alloc for threads failed\n");
+ return;
+ }
+
+ tests = kzalloc(i * sizeof(struct hash_test), GFP_KERNEL);
+ if (!threads) {
+ pr_err("Memory alloc for hash tests failed\n");
+ goto err;
+ }
+
for (i = 0; speed[i].blen != 0; i++) {
if (speed[i].blen > TVMEMSIZE * PAGE_SIZE) {
pr_err("template (%u) too big for tvmem (%lu)\n",
@@ -688,29 +773,38 @@ static void test_ahash_speed(const char *algo, unsigned int sec,
break;
}
- pr_info("test%3u "
- "(%5u byte blocks,%5u bytes per update,%4u updates): ",
- i, speed[i].blen, speed[i].plen, speed[i].blen / speed[i].plen);
-
- ahash_request_set_crypt(req, sg, output, speed[i].plen);
-
- if (sec)
- ret = test_ahash_jiffies(req, speed[i].blen,
- speed[i].plen, output, sec);
- else
- ret = test_ahash_cycles(req, speed[i].blen,
- speed[i].plen, output);
-
- if (ret) {
- pr_err("hashing failed ret=%d\n", ret);
+ tests[i].algo = algo;
+ tests[i].blen = speed[i].blen;
+ tests[i].plen = speed[i].plen;
+ tests[i].klen = speed[i].klen;
+ init_completion(&tests[i].print);
+ init_completion(&tests[i].finish);
+
+ /* Create a kthread for the test vector in template */
+ threads[i] = kthread_run(test_ahash_speed_thread, &tests[i],
+ "tcrypt_ahash_%d", i);
+ if (IS_ERR(threads[i])) {
+ pr_err("tcrypt_ahash_%d creation failed\n", i);
break;
}
}
- ahash_request_free(req);
+ num_tests = i;
-out:
- crypto_free_ahash(tfm);
+ /* TODO: Let all threads pass a barrier so that they start
+ * crypto tests together.
+ */
+
+ /* Signal threads one by one for printing results and stop them*/
+ for (i = 0; i < num_tests; i++) {
+ complete(&tests[i].print);
+ /*kthread_stop(threads[i]);*/
+ wait_for_completion_interruptible(&tests[i].finish);
+ }
+
+err:
+ kfree(threads);
+ kfree(tests);
}
static inline int do_one_acipher_op(struct ablkcipher_request *req, int ret)
--
1.7.7.6
--
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