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Add set affinity -a option to tests
[urcu.git]
/
test_urcu.c
diff --git
a/test_urcu.c
b/test_urcu.c
index d300610e049dc907147228e40d1c2b34245942b4..016fa3f6c70ac2f7aa7c6c74cef1225493d6b1fa 100644
(file)
--- a/
test_urcu.c
+++ b/
test_urcu.c
@@
-20,6
+20,7
@@
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
+#define _GNU_SOURCE
#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
@@
-30,6
+31,7
@@
#include <stdio.h>
#include <assert.h>
#include <sys/syscall.h>
#include <stdio.h>
#include <assert.h>
#include <sys/syscall.h>
+#include <sched.h>
#include "arch.h"
#include "arch.h"
@@
-168,7
+170,7
@@
void *thr_reader(void *_count)
assert(local_ptr->a == 8);
rcu_read_unlock();
nr_reads++;
assert(local_ptr->a == 8);
rcu_read_unlock();
nr_reads++;
- if (
!test_duration_read(
))
+ if (
unlikely(!test_duration_read()
))
break;
}
break;
}
@@
-208,9
+210,9
@@
void *thr_writer(void *_count)
old->a = 0;
test_array_free(old);
nr_writes++;
old->a = 0;
test_array_free(old);
nr_writes++;
- if (
!test_duration_write(
))
+ if (
unlikely(!test_duration_write()
))
break;
break;
- if (
wdelay
)
+ if (
unlikely(wdelay)
)
usleep(wdelay);
}
usleep(wdelay);
}
@@
-227,9
+229,12
@@
void show_usage(int argc, char **argv)
printf(" [-r] [-w] (yield reader and/or writer)");
#endif
printf(" [-d delay] (writer period (us))");
printf(" [-r] [-w] (yield reader and/or writer)");
#endif
printf(" [-d delay] (writer period (us))");
+ printf(" [-a cpu#] [-a cpu#]... (affinity)");
printf("\n");
}
printf("\n");
}
+cpu_set_t affinity;
+
int main(int argc, char **argv)
{
int err;
int main(int argc, char **argv)
{
int err;
@@
-237,7
+242,8
@@
int main(int argc, char **argv)
void *tret;
unsigned long long *count_reader, *count_writer;
unsigned long long tot_reads = 0, tot_writes = 0;
void *tret;
unsigned long long *count_reader, *count_writer;
unsigned long long tot_reads = 0, tot_writes = 0;
- int i;
+ int i, a;
+ int use_affinity = 0;
if (argc < 4) {
show_usage(argc, argv);
if (argc < 4) {
show_usage(argc, argv);
@@
-262,6
+268,8
@@
int main(int argc, char **argv)
return -1;
}
return -1;
}
+ CPU_ZERO(&affinity);
+
for (i = 4; i < argc; i++) {
if (argv[i][0] != '-')
continue;
for (i = 4; i < argc; i++) {
if (argv[i][0] != '-')
continue;
@@
-274,6
+282,16
@@
int main(int argc, char **argv)
yield_active |= YIELD_WRITE;
break;
#endif
yield_active |= YIELD_WRITE;
break;
#endif
+ case 'a':
+ if (argc < i + 2) {
+ show_usage(argc, argv);
+ return -1;
+ }
+ a = atoi(argv[++i]);
+ CPU_SET(a, &affinity);
+ use_affinity = 1;
+ printf("Adding CPU %d affinity\n", a);
+ break;
case 'd':
if (argc < i + 2) {
show_usage(argc, argv);
case 'd':
if (argc < i + 2) {
show_usage(argc, argv);
@@
-290,6
+308,12
@@
int main(int argc, char **argv)
printf("thread %-6s, thread id : %lx, tid %lu\n",
"main", pthread_self(), (unsigned long)gettid());
printf("thread %-6s, thread id : %lx, tid %lu\n",
"main", pthread_self(), (unsigned long)gettid());
+ if (use_affinity
+ && sched_setaffinity(0, sizeof(affinity), &affinity) < 0) {
+ perror("sched_setaffinity");
+ exit(-1);
+ }
+
test_array = malloc(sizeof(*test_array) * ARRAY_SIZE);
tid_reader = malloc(sizeof(*tid_reader) * nr_readers);
tid_writer = malloc(sizeof(*tid_writer) * nr_writers);
test_array = malloc(sizeof(*test_array) * ARRAY_SIZE);
tid_reader = malloc(sizeof(*tid_reader) * nr_readers);
tid_writer = malloc(sizeof(*tid_writer) * nr_writers);
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