numam-dpdk/app/test/test_rcu_qsbr.c
Gavin Hu 1b32cc619b test/rcu: fix build for small number of cores
If the RTE_MAX_LCORE is less than 10, a compilation error is generated:
app/test/test_rcu_qsbr.c:234:10: error: comparison of integer
expressions of different signedness: ‘unsigned int’ and ‘int’
[-Werror=sign-compare]

The cause is (RTE_MAX_LCORE - 10) results in a negative value.

To fix, use rte_rand() to find a number between 0 and RTE_MAX_LCORE.

Fixes: b87089b0bb ("test/rcu: add API and functional tests")
Cc: stable@dpdk.org

Signed-off-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Dharmik Thakkar <dharmik.thakkar@arm.com>
2019-11-25 23:51:53 +01:00

1051 lines
26 KiB
C

/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2018 Arm Limited
*/
#include <stdio.h>
#include <rte_pause.h>
#include <rte_rcu_qsbr.h>
#include <rte_hash.h>
#include <rte_hash_crc.h>
#include <rte_malloc.h>
#include <rte_cycles.h>
#include <rte_random.h>
#include <unistd.h>
#include "test.h"
/* Check condition and return an error if true. */
#define TEST_RCU_QSBR_RETURN_IF_ERROR(cond, str, ...) do { \
if (cond) { \
printf("ERROR file %s, line %d: " str "\n", __FILE__, \
__LINE__, ##__VA_ARGS__); \
return -1; \
} \
} while (0)
/* Make sure that this has the same value as __RTE_QSBR_CNT_INIT */
#define TEST_RCU_QSBR_CNT_INIT 1
static uint16_t enabled_core_ids[RTE_MAX_LCORE];
static unsigned int num_cores;
static uint32_t *keys;
#define TOTAL_ENTRY (1024 * 8)
#define COUNTER_VALUE 4096
static uint32_t *hash_data[RTE_MAX_LCORE][TOTAL_ENTRY];
static uint8_t writer_done;
static struct rte_rcu_qsbr *t[RTE_MAX_LCORE];
static struct rte_hash *h[RTE_MAX_LCORE];
static char hash_name[RTE_MAX_LCORE][8];
struct test_rcu_thread_info {
/* Index in RCU array */
int ir;
/* Index in hash array */
int ih;
/* lcore IDs registered on the RCU variable */
uint16_t r_core_ids[2];
};
static struct test_rcu_thread_info thread_info[RTE_MAX_LCORE/4];
static int
alloc_rcu(void)
{
int i;
size_t sz;
sz = rte_rcu_qsbr_get_memsize(RTE_MAX_LCORE);
for (i = 0; i < RTE_MAX_LCORE; i++)
t[i] = (struct rte_rcu_qsbr *)rte_zmalloc(NULL, sz,
RTE_CACHE_LINE_SIZE);
return 0;
}
static int
free_rcu(void)
{
int i;
for (i = 0; i < RTE_MAX_LCORE; i++)
rte_free(t[i]);
return 0;
}
/*
* rte_rcu_qsbr_thread_register: Add a reader thread, to the list of threads
* reporting their quiescent state on a QS variable.
*/
static int
test_rcu_qsbr_get_memsize(void)
{
size_t sz;
printf("\nTest rte_rcu_qsbr_thread_register()\n");
sz = rte_rcu_qsbr_get_memsize(0);
TEST_RCU_QSBR_RETURN_IF_ERROR((sz != 1), "Get Memsize for 0 threads");
sz = rte_rcu_qsbr_get_memsize(128);
/* For 128 threads,
* for machines with cache line size of 64B - 8384
* for machines with cache line size of 128 - 16768
*/
if (RTE_CACHE_LINE_SIZE == 64)
TEST_RCU_QSBR_RETURN_IF_ERROR((sz != 8384),
"Get Memsize for 128 threads");
else if (RTE_CACHE_LINE_SIZE == 128)
TEST_RCU_QSBR_RETURN_IF_ERROR((sz != 16768),
"Get Memsize for 128 threads");
return 0;
}
/*
* rte_rcu_qsbr_init: Initialize a QSBR variable.
*/
static int
test_rcu_qsbr_init(void)
{
int r;
printf("\nTest rte_rcu_qsbr_init()\n");
r = rte_rcu_qsbr_init(NULL, RTE_MAX_LCORE);
TEST_RCU_QSBR_RETURN_IF_ERROR((r != 1), "NULL variable");
return 0;
}
/*
* rte_rcu_qsbr_thread_register: Add a reader thread, to the list of threads
* reporting their quiescent state on a QS variable.
*/
static int
test_rcu_qsbr_thread_register(void)
{
int ret;
printf("\nTest rte_rcu_qsbr_thread_register()\n");
ret = rte_rcu_qsbr_thread_register(NULL, enabled_core_ids[0]);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "NULL variable check");
ret = rte_rcu_qsbr_thread_register(NULL, 100000);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0),
"NULL variable, invalid thread id");
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
/* Register valid thread id */
ret = rte_rcu_qsbr_thread_register(t[0], enabled_core_ids[0]);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 1), "Valid thread id");
/* Re-registering should not return error */
ret = rte_rcu_qsbr_thread_register(t[0], enabled_core_ids[0]);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 1),
"Already registered thread id");
/* Register valid thread id - max allowed thread id */
ret = rte_rcu_qsbr_thread_register(t[0], RTE_MAX_LCORE - 1);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 1), "Max thread id");
ret = rte_rcu_qsbr_thread_register(t[0], 100000);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0),
"NULL variable, invalid thread id");
return 0;
}
/*
* rte_rcu_qsbr_thread_unregister: Remove a reader thread, from the list of
* threads reporting their quiescent state on a QS variable.
*/
static int
test_rcu_qsbr_thread_unregister(void)
{
unsigned int num_threads[3] = {1, RTE_MAX_LCORE, 1};
unsigned int i, j;
unsigned int skip_thread_id;
uint64_t token;
int ret;
printf("\nTest rte_rcu_qsbr_thread_unregister()\n");
ret = rte_rcu_qsbr_thread_unregister(NULL, enabled_core_ids[0]);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "NULL variable check");
ret = rte_rcu_qsbr_thread_unregister(NULL, 100000);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0),
"NULL variable, invalid thread id");
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
rte_rcu_qsbr_thread_register(t[0], enabled_core_ids[0]);
ret = rte_rcu_qsbr_thread_unregister(t[0], 100000);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0),
"NULL variable, invalid thread id");
/* Find first disabled core */
for (i = 0; i < RTE_MAX_LCORE; i++) {
if (enabled_core_ids[i] == 0)
break;
}
/* Test with disabled lcore */
ret = rte_rcu_qsbr_thread_unregister(t[0], i);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 1),
"disabled thread id");
/* Unregister already unregistered core */
ret = rte_rcu_qsbr_thread_unregister(t[0], i);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 1),
"Already unregistered core");
/* Test with enabled lcore */
ret = rte_rcu_qsbr_thread_unregister(t[0], enabled_core_ids[0]);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 1),
"enabled thread id");
/* Unregister already unregistered core */
ret = rte_rcu_qsbr_thread_unregister(t[0], enabled_core_ids[0]);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 1),
"Already unregistered core");
/*
* Test with different thread_ids:
* 1 - thread_id = 0
* 2 - All possible thread_ids, from 0 to RTE_MAX_LCORE
* 3 - thread_id = RTE_MAX_LCORE - 1
*/
for (j = 0; j < 3; j++) {
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
for (i = 0; i < num_threads[j]; i++)
rte_rcu_qsbr_thread_register(t[0],
(j == 2) ? (RTE_MAX_LCORE - 1) : i);
token = rte_rcu_qsbr_start(t[0]);
TEST_RCU_QSBR_RETURN_IF_ERROR(
(token != (TEST_RCU_QSBR_CNT_INIT + 1)), "QSBR Start");
skip_thread_id = rte_rand() % RTE_MAX_LCORE;
/* Update quiescent state counter */
for (i = 0; i < num_threads[j]; i++) {
/* Skip one update */
if ((j == 1) && (i == skip_thread_id))
continue;
rte_rcu_qsbr_quiescent(t[0],
(j == 2) ? (RTE_MAX_LCORE - 1) : i);
}
if (j == 1) {
/* Validate the updates */
ret = rte_rcu_qsbr_check(t[0], token, false);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0),
"Non-blocking QSBR check");
/* Update the previously skipped thread */
rte_rcu_qsbr_quiescent(t[0], skip_thread_id);
}
/* Validate the updates */
ret = rte_rcu_qsbr_check(t[0], token, false);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0),
"Non-blocking QSBR check");
for (i = 0; i < num_threads[j]; i++)
rte_rcu_qsbr_thread_unregister(t[0],
(j == 2) ? (RTE_MAX_LCORE - 1) : i);
/* Check with no thread registered */
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0),
"Blocking QSBR check");
}
return 0;
}
/*
* rte_rcu_qsbr_start: Ask the worker threads to report the quiescent state
* status.
*/
static int
test_rcu_qsbr_start(void)
{
uint64_t token;
int i;
printf("\nTest rte_rcu_qsbr_start()\n");
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
for (i = 0; i < 3; i++)
rte_rcu_qsbr_thread_register(t[0], enabled_core_ids[i]);
token = rte_rcu_qsbr_start(t[0]);
TEST_RCU_QSBR_RETURN_IF_ERROR(
(token != (TEST_RCU_QSBR_CNT_INIT + 1)), "QSBR Start");
return 0;
}
static int
test_rcu_qsbr_check_reader(void *arg)
{
struct rte_rcu_qsbr *temp;
uint8_t read_type = (uint8_t)((uintptr_t)arg);
temp = t[read_type];
/* Update quiescent state counter */
rte_rcu_qsbr_quiescent(temp, enabled_core_ids[0]);
rte_rcu_qsbr_quiescent(temp, enabled_core_ids[1]);
rte_rcu_qsbr_thread_unregister(temp, enabled_core_ids[2]);
rte_rcu_qsbr_quiescent(temp, enabled_core_ids[3]);
return 0;
}
/*
* rte_rcu_qsbr_check: Checks if all the worker threads have entered the queis-
* cent state 'n' number of times. 'n' is provided in rte_rcu_qsbr_start API.
*/
static int
test_rcu_qsbr_check(void)
{
int i, ret;
uint64_t token;
printf("\nTest rte_rcu_qsbr_check()\n");
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
token = rte_rcu_qsbr_start(t[0]);
TEST_RCU_QSBR_RETURN_IF_ERROR(
(token != (TEST_RCU_QSBR_CNT_INIT + 1)), "QSBR Start");
ret = rte_rcu_qsbr_check(t[0], 0, false);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "Token = 0");
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "Blocking QSBR check");
for (i = 0; i < 3; i++)
rte_rcu_qsbr_thread_register(t[0], enabled_core_ids[i]);
ret = rte_rcu_qsbr_check(t[0], token, false);
/* Threads are offline, hence this should pass */
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "Non-blocking QSBR check");
token = rte_rcu_qsbr_start(t[0]);
TEST_RCU_QSBR_RETURN_IF_ERROR(
(token != (TEST_RCU_QSBR_CNT_INIT + 2)), "QSBR Start");
ret = rte_rcu_qsbr_check(t[0], token, false);
/* Threads are offline, hence this should pass */
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "Non-blocking QSBR check");
for (i = 0; i < 3; i++)
rte_rcu_qsbr_thread_unregister(t[0], enabled_core_ids[i]);
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "Blocking QSBR check");
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
for (i = 0; i < 4; i++)
rte_rcu_qsbr_thread_register(t[0], enabled_core_ids[i]);
token = rte_rcu_qsbr_start(t[0]);
TEST_RCU_QSBR_RETURN_IF_ERROR(
(token != (TEST_RCU_QSBR_CNT_INIT + 1)), "QSBR Start");
rte_eal_remote_launch(test_rcu_qsbr_check_reader, NULL,
enabled_core_ids[0]);
rte_eal_mp_wait_lcore();
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret != 1), "Blocking QSBR check");
return 0;
}
static int
test_rcu_qsbr_synchronize_reader(void *arg)
{
uint32_t lcore_id = rte_lcore_id();
(void)arg;
/* Register and become online */
rte_rcu_qsbr_thread_register(t[0], lcore_id);
rte_rcu_qsbr_thread_online(t[0], lcore_id);
while (!writer_done)
rte_rcu_qsbr_quiescent(t[0], lcore_id);
rte_rcu_qsbr_thread_offline(t[0], lcore_id);
rte_rcu_qsbr_thread_unregister(t[0], lcore_id);
return 0;
}
/*
* rte_rcu_qsbr_synchronize: Wait till all the reader threads have entered
* the queiscent state.
*/
static int
test_rcu_qsbr_synchronize(void)
{
unsigned int i;
printf("\nTest rte_rcu_qsbr_synchronize()\n");
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
/* Test if the API returns when there are no threads reporting
* QS on the variable.
*/
rte_rcu_qsbr_synchronize(t[0], RTE_QSBR_THRID_INVALID);
/* Test if the API returns when there are threads registered
* but not online.
*/
for (i = 0; i < RTE_MAX_LCORE; i++)
rte_rcu_qsbr_thread_register(t[0], i);
rte_rcu_qsbr_synchronize(t[0], RTE_QSBR_THRID_INVALID);
/* Test if the API returns when the caller is also
* reporting the QS status.
*/
rte_rcu_qsbr_thread_online(t[0], 0);
rte_rcu_qsbr_synchronize(t[0], 0);
rte_rcu_qsbr_thread_offline(t[0], 0);
/* Check the other boundary */
rte_rcu_qsbr_thread_online(t[0], RTE_MAX_LCORE - 1);
rte_rcu_qsbr_synchronize(t[0], RTE_MAX_LCORE - 1);
rte_rcu_qsbr_thread_offline(t[0], RTE_MAX_LCORE - 1);
/* Test if the API returns after unregisterng all the threads */
for (i = 0; i < RTE_MAX_LCORE; i++)
rte_rcu_qsbr_thread_unregister(t[0], i);
rte_rcu_qsbr_synchronize(t[0], RTE_QSBR_THRID_INVALID);
/* Test if the API returns with the live threads */
writer_done = 0;
for (i = 0; i < num_cores; i++)
rte_eal_remote_launch(test_rcu_qsbr_synchronize_reader,
NULL, enabled_core_ids[i]);
rte_rcu_qsbr_synchronize(t[0], RTE_QSBR_THRID_INVALID);
rte_rcu_qsbr_synchronize(t[0], RTE_QSBR_THRID_INVALID);
rte_rcu_qsbr_synchronize(t[0], RTE_QSBR_THRID_INVALID);
rte_rcu_qsbr_synchronize(t[0], RTE_QSBR_THRID_INVALID);
rte_rcu_qsbr_synchronize(t[0], RTE_QSBR_THRID_INVALID);
writer_done = 1;
rte_eal_mp_wait_lcore();
return 0;
}
/*
* rte_rcu_qsbr_thread_online: Add a registered reader thread, to
* the list of threads reporting their quiescent state on a QS variable.
*/
static int
test_rcu_qsbr_thread_online(void)
{
int i, ret;
uint64_t token;
printf("Test rte_rcu_qsbr_thread_online()\n");
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
/* Register 2 threads to validate that only the
* online thread is waited upon.
*/
rte_rcu_qsbr_thread_register(t[0], enabled_core_ids[0]);
rte_rcu_qsbr_thread_register(t[0], enabled_core_ids[1]);
/* Use qsbr_start to verify that the thread_online API
* succeeded.
*/
token = rte_rcu_qsbr_start(t[0]);
/* Make the thread online */
rte_rcu_qsbr_thread_online(t[0], enabled_core_ids[0]);
/* Check if the thread is online */
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "thread online");
/* Check if the online thread, can report QS */
token = rte_rcu_qsbr_start(t[0]);
rte_rcu_qsbr_quiescent(t[0], enabled_core_ids[0]);
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "thread update");
/* Make all the threads online */
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
token = rte_rcu_qsbr_start(t[0]);
for (i = 0; i < RTE_MAX_LCORE; i++) {
rte_rcu_qsbr_thread_register(t[0], i);
rte_rcu_qsbr_thread_online(t[0], i);
}
/* Check if all the threads are online */
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "thread online");
/* Check if all the online threads can report QS */
token = rte_rcu_qsbr_start(t[0]);
for (i = 0; i < RTE_MAX_LCORE; i++)
rte_rcu_qsbr_quiescent(t[0], i);
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "thread update");
return 0;
}
/*
* rte_rcu_qsbr_thread_offline: Remove a registered reader thread, from
* the list of threads reporting their quiescent state on a QS variable.
*/
static int
test_rcu_qsbr_thread_offline(void)
{
int i, ret;
uint64_t token;
printf("\nTest rte_rcu_qsbr_thread_offline()\n");
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
rte_rcu_qsbr_thread_register(t[0], enabled_core_ids[0]);
/* Make the thread offline */
rte_rcu_qsbr_thread_offline(t[0], enabled_core_ids[0]);
/* Use qsbr_start to verify that the thread_offline API
* succeeded.
*/
token = rte_rcu_qsbr_start(t[0]);
/* Check if the thread is offline */
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "thread offline");
/* Bring an offline thread online and check if it can
* report QS.
*/
rte_rcu_qsbr_thread_online(t[0], enabled_core_ids[0]);
/* Check if the online thread, can report QS */
token = rte_rcu_qsbr_start(t[0]);
rte_rcu_qsbr_quiescent(t[0], enabled_core_ids[0]);
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "offline to online");
/*
* Check a sequence of online/status/offline/status/online/status
*/
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
token = rte_rcu_qsbr_start(t[0]);
/* Make the threads online */
for (i = 0; i < RTE_MAX_LCORE; i++) {
rte_rcu_qsbr_thread_register(t[0], i);
rte_rcu_qsbr_thread_online(t[0], i);
}
/* Check if all the threads are online */
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "thread online");
/* Check if all the online threads can report QS */
token = rte_rcu_qsbr_start(t[0]);
for (i = 0; i < RTE_MAX_LCORE; i++)
rte_rcu_qsbr_quiescent(t[0], i);
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "report QS");
/* Make all the threads offline */
for (i = 0; i < RTE_MAX_LCORE; i++)
rte_rcu_qsbr_thread_offline(t[0], i);
/* Make sure these threads are not being waited on */
token = rte_rcu_qsbr_start(t[0]);
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "offline QS");
/* Make the threads online */
for (i = 0; i < RTE_MAX_LCORE; i++)
rte_rcu_qsbr_thread_online(t[0], i);
/* Check if all the online threads can report QS */
token = rte_rcu_qsbr_start(t[0]);
for (i = 0; i < RTE_MAX_LCORE; i++)
rte_rcu_qsbr_quiescent(t[0], i);
ret = rte_rcu_qsbr_check(t[0], token, true);
TEST_RCU_QSBR_RETURN_IF_ERROR((ret == 0), "online again");
return 0;
}
/*
* rte_rcu_qsbr_dump: Dump status of a single QS variable to a file
*/
static int
test_rcu_qsbr_dump(void)
{
int i;
printf("\nTest rte_rcu_qsbr_dump()\n");
/* Negative tests */
rte_rcu_qsbr_dump(NULL, t[0]);
rte_rcu_qsbr_dump(stdout, NULL);
rte_rcu_qsbr_dump(NULL, NULL);
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
rte_rcu_qsbr_init(t[1], RTE_MAX_LCORE);
/* QS variable with 0 core mask */
rte_rcu_qsbr_dump(stdout, t[0]);
rte_rcu_qsbr_thread_register(t[0], enabled_core_ids[0]);
for (i = 1; i < 3; i++)
rte_rcu_qsbr_thread_register(t[1], enabled_core_ids[i]);
rte_rcu_qsbr_dump(stdout, t[0]);
rte_rcu_qsbr_dump(stdout, t[1]);
printf("\n");
return 0;
}
static int
test_rcu_qsbr_reader(void *arg)
{
struct rte_rcu_qsbr *temp;
struct rte_hash *hash = NULL;
int i;
uint32_t lcore_id = rte_lcore_id();
struct test_rcu_thread_info *ti;
uint32_t *pdata;
ti = (struct test_rcu_thread_info *)arg;
temp = t[ti->ir];
hash = h[ti->ih];
do {
rte_rcu_qsbr_thread_register(temp, lcore_id);
rte_rcu_qsbr_thread_online(temp, lcore_id);
for (i = 0; i < TOTAL_ENTRY; i++) {
rte_rcu_qsbr_lock(temp, lcore_id);
if (rte_hash_lookup_data(hash, keys+i,
(void **)&pdata) != -ENOENT) {
pdata[lcore_id] = 0;
while (pdata[lcore_id] < COUNTER_VALUE)
pdata[lcore_id]++;
}
rte_rcu_qsbr_unlock(temp, lcore_id);
}
/* Update quiescent state counter */
rte_rcu_qsbr_quiescent(temp, lcore_id);
rte_rcu_qsbr_thread_offline(temp, lcore_id);
rte_rcu_qsbr_thread_unregister(temp, lcore_id);
} while (!writer_done);
return 0;
}
static int
test_rcu_qsbr_writer(void *arg)
{
uint64_t token;
int32_t i, pos, del;
uint32_t c;
struct rte_rcu_qsbr *temp;
struct rte_hash *hash = NULL;
struct test_rcu_thread_info *ti;
ti = (struct test_rcu_thread_info *)arg;
temp = t[ti->ir];
hash = h[ti->ih];
/* Delete element from the shared data structure */
del = rte_lcore_id() % TOTAL_ENTRY;
pos = rte_hash_del_key(hash, keys + del);
if (pos < 0) {
printf("Delete key failed #%d\n", keys[del]);
return -1;
}
/* Start the quiescent state query process */
token = rte_rcu_qsbr_start(temp);
/* Check the quiescent state status */
rte_rcu_qsbr_check(temp, token, true);
for (i = 0; i < 2; i++) {
c = hash_data[ti->ih][del][ti->r_core_ids[i]];
if (c != COUNTER_VALUE && c != 0) {
printf("Reader lcore id %u did not complete = %u\t",
rte_lcore_id(), c);
return -1;
}
}
if (rte_hash_free_key_with_position(hash, pos) < 0) {
printf("Failed to free the key #%d\n", keys[del]);
return -1;
}
rte_free(hash_data[ti->ih][del]);
hash_data[ti->ih][del] = NULL;
return 0;
}
static struct rte_hash *
init_hash(int hash_id)
{
int i;
struct rte_hash *h = NULL;
sprintf(hash_name[hash_id], "hash%d", hash_id);
struct rte_hash_parameters hash_params = {
.entries = TOTAL_ENTRY,
.key_len = sizeof(uint32_t),
.hash_func_init_val = 0,
.socket_id = rte_socket_id(),
.hash_func = rte_hash_crc,
.extra_flag =
RTE_HASH_EXTRA_FLAGS_RW_CONCURRENCY_LF,
.name = hash_name[hash_id],
};
h = rte_hash_create(&hash_params);
if (h == NULL) {
printf("Hash create Failed\n");
return NULL;
}
for (i = 0; i < TOTAL_ENTRY; i++) {
hash_data[hash_id][i] =
rte_zmalloc(NULL, sizeof(uint32_t) * RTE_MAX_LCORE, 0);
if (hash_data[hash_id][i] == NULL) {
printf("No memory\n");
return NULL;
}
}
keys = rte_malloc(NULL, sizeof(uint32_t) * TOTAL_ENTRY, 0);
if (keys == NULL) {
printf("No memory\n");
return NULL;
}
for (i = 0; i < TOTAL_ENTRY; i++)
keys[i] = i;
for (i = 0; i < TOTAL_ENTRY; i++) {
if (rte_hash_add_key_data(h, keys + i,
(void *)((uintptr_t)hash_data[hash_id][i]))
< 0) {
printf("Hash key add Failed #%d\n", i);
return NULL;
}
}
return h;
}
/*
* Functional test:
* Single writer, Single QS variable, simultaneous QSBR Queries
*/
static int
test_rcu_qsbr_sw_sv_3qs(void)
{
uint64_t token[3];
uint32_t c;
int i;
int32_t pos[3];
writer_done = 0;
printf("Test: 1 writer, 1 QSBR variable, simultaneous QSBR queries\n");
rte_rcu_qsbr_init(t[0], RTE_MAX_LCORE);
/* Shared data structure created */
h[0] = init_hash(0);
if (h[0] == NULL) {
printf("Hash init failed\n");
goto error;
}
/* No need to fill the registered core IDs as the writer
* thread is not launched.
*/
thread_info[0].ir = 0;
thread_info[0].ih = 0;
/* Reader threads are launched */
for (i = 0; i < 4; i++)
rte_eal_remote_launch(test_rcu_qsbr_reader, &thread_info[0],
enabled_core_ids[i]);
/* Delete element from the shared data structure */
pos[0] = rte_hash_del_key(h[0], keys + 0);
if (pos[0] < 0) {
printf("Delete key failed #%d\n", keys[0]);
goto error;
}
/* Start the quiescent state query process */
token[0] = rte_rcu_qsbr_start(t[0]);
/* Delete element from the shared data structure */
pos[1] = rte_hash_del_key(h[0], keys + 3);
if (pos[1] < 0) {
printf("Delete key failed #%d\n", keys[3]);
goto error;
}
/* Start the quiescent state query process */
token[1] = rte_rcu_qsbr_start(t[0]);
/* Delete element from the shared data structure */
pos[2] = rte_hash_del_key(h[0], keys + 6);
if (pos[2] < 0) {
printf("Delete key failed #%d\n", keys[6]);
goto error;
}
/* Start the quiescent state query process */
token[2] = rte_rcu_qsbr_start(t[0]);
/* Check the quiescent state status */
rte_rcu_qsbr_check(t[0], token[0], true);
for (i = 0; i < 4; i++) {
c = hash_data[0][0][enabled_core_ids[i]];
if (c != COUNTER_VALUE && c != 0) {
printf("Reader lcore %d did not complete #0 = %d\n",
enabled_core_ids[i], c);
goto error;
}
}
if (rte_hash_free_key_with_position(h[0], pos[0]) < 0) {
printf("Failed to free the key #%d\n", keys[0]);
goto error;
}
rte_free(hash_data[0][0]);
hash_data[0][0] = NULL;
/* Check the quiescent state status */
rte_rcu_qsbr_check(t[0], token[1], true);
for (i = 0; i < 4; i++) {
c = hash_data[0][3][enabled_core_ids[i]];
if (c != COUNTER_VALUE && c != 0) {
printf("Reader lcore %d did not complete #3 = %d\n",
enabled_core_ids[i], c);
goto error;
}
}
if (rte_hash_free_key_with_position(h[0], pos[1]) < 0) {
printf("Failed to free the key #%d\n", keys[3]);
goto error;
}
rte_free(hash_data[0][3]);
hash_data[0][3] = NULL;
/* Check the quiescent state status */
rte_rcu_qsbr_check(t[0], token[2], true);
for (i = 0; i < 4; i++) {
c = hash_data[0][6][enabled_core_ids[i]];
if (c != COUNTER_VALUE && c != 0) {
printf("Reader lcore %d did not complete #6 = %d\n",
enabled_core_ids[i], c);
goto error;
}
}
if (rte_hash_free_key_with_position(h[0], pos[2]) < 0) {
printf("Failed to free the key #%d\n", keys[6]);
goto error;
}
rte_free(hash_data[0][6]);
hash_data[0][6] = NULL;
writer_done = 1;
/* Wait and check return value from reader threads */
for (i = 0; i < 4; i++)
if (rte_eal_wait_lcore(enabled_core_ids[i]) < 0)
goto error;
rte_hash_free(h[0]);
rte_free(keys);
return 0;
error:
writer_done = 1;
/* Wait until all readers have exited */
rte_eal_mp_wait_lcore();
rte_hash_free(h[0]);
rte_free(keys);
for (i = 0; i < TOTAL_ENTRY; i++)
rte_free(hash_data[0][i]);
return -1;
}
/*
* Multi writer, Multiple QS variable, simultaneous QSBR queries
*/
static int
test_rcu_qsbr_mw_mv_mqs(void)
{
unsigned int i, j;
unsigned int test_cores;
writer_done = 0;
test_cores = num_cores / 4;
test_cores = test_cores * 4;
printf("Test: %d writers, %d QSBR variable, simultaneous QSBR queries\n",
test_cores / 2, test_cores / 4);
for (i = 0; i < test_cores / 4; i++) {
j = i * 4;
rte_rcu_qsbr_init(t[i], RTE_MAX_LCORE);
h[i] = init_hash(i);
if (h[i] == NULL) {
printf("Hash init failed\n");
goto error;
}
thread_info[i].ir = i;
thread_info[i].ih = i;
thread_info[i].r_core_ids[0] = enabled_core_ids[j];
thread_info[i].r_core_ids[1] = enabled_core_ids[j + 1];
/* Reader threads are launched */
rte_eal_remote_launch(test_rcu_qsbr_reader,
(void *)&thread_info[i],
enabled_core_ids[j]);
rte_eal_remote_launch(test_rcu_qsbr_reader,
(void *)&thread_info[i],
enabled_core_ids[j + 1]);
/* Writer threads are launched */
rte_eal_remote_launch(test_rcu_qsbr_writer,
(void *)&thread_info[i],
enabled_core_ids[j + 2]);
rte_eal_remote_launch(test_rcu_qsbr_writer,
(void *)&thread_info[i],
enabled_core_ids[j + 3]);
}
/* Wait and check return value from writer threads */
for (i = 0; i < test_cores / 4; i++) {
j = i * 4;
if (rte_eal_wait_lcore(enabled_core_ids[j + 2]) < 0)
goto error;
if (rte_eal_wait_lcore(enabled_core_ids[j + 3]) < 0)
goto error;
}
writer_done = 1;
/* Wait and check return value from reader threads */
for (i = 0; i < test_cores / 4; i++) {
j = i * 4;
if (rte_eal_wait_lcore(enabled_core_ids[j]) < 0)
goto error;
if (rte_eal_wait_lcore(enabled_core_ids[j + 1]) < 0)
goto error;
}
for (i = 0; i < test_cores / 4; i++)
rte_hash_free(h[i]);
rte_free(keys);
return 0;
error:
writer_done = 1;
/* Wait until all readers and writers have exited */
rte_eal_mp_wait_lcore();
for (i = 0; i < test_cores / 4; i++)
rte_hash_free(h[i]);
rte_free(keys);
for (j = 0; j < test_cores / 4; j++)
for (i = 0; i < TOTAL_ENTRY; i++)
rte_free(hash_data[j][i]);
return -1;
}
static int
test_rcu_qsbr_main(void)
{
uint16_t core_id;
if (rte_lcore_count() < 5) {
printf("Not enough cores for rcu_qsbr_autotest, expecting at least 5\n");
return TEST_SKIPPED;
}
num_cores = 0;
RTE_LCORE_FOREACH_SLAVE(core_id) {
enabled_core_ids[num_cores] = core_id;
num_cores++;
}
/* Error-checking test cases */
if (test_rcu_qsbr_get_memsize() < 0)
goto test_fail;
if (test_rcu_qsbr_init() < 0)
goto test_fail;
alloc_rcu();
if (test_rcu_qsbr_thread_register() < 0)
goto test_fail;
if (test_rcu_qsbr_thread_unregister() < 0)
goto test_fail;
if (test_rcu_qsbr_start() < 0)
goto test_fail;
if (test_rcu_qsbr_check() < 0)
goto test_fail;
if (test_rcu_qsbr_synchronize() < 0)
goto test_fail;
if (test_rcu_qsbr_dump() < 0)
goto test_fail;
if (test_rcu_qsbr_thread_online() < 0)
goto test_fail;
if (test_rcu_qsbr_thread_offline() < 0)
goto test_fail;
printf("\nFunctional tests\n");
if (test_rcu_qsbr_sw_sv_3qs() < 0)
goto test_fail;
if (test_rcu_qsbr_mw_mv_mqs() < 0)
goto test_fail;
free_rcu();
printf("\n");
return 0;
test_fail:
free_rcu();
return -1;
}
REGISTER_TEST_COMMAND(rcu_qsbr_autotest, test_rcu_qsbr_main);