#define DEF_KEY_LOCK(name, header, fn_suffix, len) \
{ #name, header, len, lock_stat_key_ ## fn_suffix, lock_stat_key_print_ ## fn_suffix, {} }
-struct lock_key keys[] = {
+static struct lock_key report_keys[] = {
DEF_KEY_LOCK(acquired, "acquired", nr_acquired, 10),
DEF_KEY_LOCK(contended, "contended", nr_contended, 10),
DEF_KEY_LOCK(avg_wait, "avg wait", avg_wait_time, 12),
{ }
};
-static int select_key(void)
+static struct lock_key contention_keys[] = {
+ DEF_KEY_LOCK(contended, "contended", nr_contended, 10),
+ DEF_KEY_LOCK(wait_total, "total wait", wait_time_total, 12),
+ DEF_KEY_LOCK(wait_max, "max wait", wait_time_max, 12),
+ DEF_KEY_LOCK(wait_min, "min wait", wait_time_min, 12),
+ DEF_KEY_LOCK(avg_wait, "avg wait", avg_wait_time, 12),
+
+ /* extra comparisons much complicated should be here */
+ { }
+};
+
+static int select_key(bool contention)
{
int i;
+ struct lock_key *keys = report_keys;
+
+ if (contention)
+ keys = contention_keys;
for (i = 0; keys[i].name; i++) {
if (!strcmp(keys[i].name, sort_key)) {
return -1;
}
-static int add_output_field(struct list_head *head, char *name)
+static int add_output_field(bool contention, char *name)
{
int i;
+ struct lock_key *keys = report_keys;
+
+ if (contention)
+ keys = contention_keys;
for (i = 0; keys[i].name; i++) {
if (strcmp(keys[i].name, name))
/* prevent double link */
if (list_empty(&keys[i].list))
- list_add_tail(&keys[i].list, head);
+ list_add_tail(&keys[i].list, &lock_keys);
return 0;
}
return -1;
}
-static int setup_output_field(const char *str)
+static int setup_output_field(bool contention, const char *str)
{
char *tok, *tmp, *orig;
int i, ret = 0;
+ struct lock_key *keys = report_keys;
+
+ if (contention)
+ keys = contention_keys;
/* no output field given: use all of them */
if (str == NULL) {
return -ENOMEM;
while ((tok = strsep(&tmp, ",")) != NULL){
- ret = add_output_field(&lock_keys, tok);
+ ret = add_output_field(contention, tok);
if (ret < 0)
break;
}
goto out_delete;
}
- if (setup_output_field(output_fields))
+ if (setup_output_field(false, output_fields))
goto out_delete;
- if (select_key())
+ if (select_key(false))
goto out_delete;
if (show_thread_stats)
goto out_delete;
}
- if (setup_output_field("contended,wait_total,wait_max,avg_wait"))
+ if (setup_output_field(true, output_fields))
goto out_delete;
- sort_key = "wait_total";
- if (select_key())
+ if (select_key(true))
goto out_delete;
aggr_mode = LOCK_AGGR_CALLER;
};
const struct option contention_options[] = {
+ OPT_STRING('k', "key", &sort_key, "wait_total",
+ "key for sorting (contended / wait_total / wait_max / wait_min / avg_wait)"),
+ OPT_STRING('F', "field", &output_fields, "contended,wait_total,wait_max,avg_wait",
+ "output fields (contended / wait_total / wait_max / wait_min / avg_wait)"),
OPT_PARENT(lock_options)
};
rc = __cmd_report(true);
} else if (strlen(argv[0]) > 2 && strstarts("contention", argv[0])) {
trace_handler = &contention_lock_ops;
+ sort_key = "wait_total";
+ output_fields = "contended,wait_total,wait_max,avg_wait";
+
if (argc) {
argc = parse_options(argc, argv, contention_options,
contention_usage, 0);