u64 wait_time_max;
int discard; /* flag of blacklist */
+ int combined;
};
/*
static struct rb_root thread_stats;
+static bool combine_locks;
+
static struct thread_stat *thread_stat_find(u32 tid)
{
struct rb_node *node;
static int (*compare)(struct lock_stat *, struct lock_stat *);
+static struct rb_root sorted; /* place to store intermediate data */
static struct rb_root result; /* place to store sorted data */
#define DEF_KEY_LOCK(name, fn_suffix) \
return -1;
}
+static void combine_lock_stats(struct lock_stat *st)
+{
+ struct rb_node **rb = &sorted.rb_node;
+ struct rb_node *parent = NULL;
+ struct lock_stat *p;
+ int ret;
+
+ while (*rb) {
+ p = container_of(*rb, struct lock_stat, rb);
+ parent = *rb;
+
+ if (st->name && p->name)
+ ret = strcmp(st->name, p->name);
+ else
+ ret = !!st->name - !!p->name;
+
+ if (ret == 0) {
+ p->nr_acquired += st->nr_acquired;
+ p->nr_contended += st->nr_contended;
+ p->wait_time_total += st->wait_time_total;
+
+ if (p->nr_contended)
+ p->avg_wait_time = p->wait_time_total / p->nr_contended;
+
+ if (p->wait_time_min > st->wait_time_min)
+ p->wait_time_min = st->wait_time_min;
+ if (p->wait_time_max < st->wait_time_max)
+ p->wait_time_max = st->wait_time_max;
+
+ st->combined = 1;
+ return;
+ }
+
+ if (ret < 0)
+ rb = &(*rb)->rb_left;
+ else
+ rb = &(*rb)->rb_right;
+ }
+
+ rb_link_node(&st->rb, parent, rb);
+ rb_insert_color(&st->rb, &sorted);
+}
+
static void insert_to_result(struct lock_stat *st,
int (*bigger)(struct lock_stat *, struct lock_stat *))
{
struct rb_node *parent = NULL;
struct lock_stat *p;
+ if (combine_locks && st->combined)
+ return;
+
while (*rb) {
p = container_of(*rb, struct lock_stat, rb);
parent = *rb;
return err;
}
+static void combine_result(void)
+{
+ unsigned int i;
+ struct lock_stat *st;
+
+ if (!combine_locks)
+ return;
+
+ for (i = 0; i < LOCKHASH_SIZE; i++) {
+ hlist_for_each_entry(st, &lockhash_table[i], hash_entry) {
+ combine_lock_stats(st);
+ }
+ }
+}
+
static void sort_result(void)
{
unsigned int i;
if (display_info) /* used for info subcommand */
err = dump_info();
else {
+ combine_result();
sort_result();
print_result();
}
OPT_STRING('k', "key", &sort_key, "acquired",
"key for sorting (acquired / contended / avg_wait / wait_total / wait_max / wait_min)"),
/* TODO: type */
+ OPT_BOOLEAN('c', "combine-locks", &combine_locks,
+ "combine locks in the same class"),
OPT_PARENT(lock_options)
};