diff options
| -rw-r--r-- | mm/slub.c | 96 |
1 files changed, 81 insertions, 15 deletions
diff --git a/mm/slub.c b/mm/slub.c index 3e614c1901b7..ae2831027802 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1586,13 +1586,16 @@ static int calculate_order(int size) order < MAX_ORDER; order++) { unsigned long slab_size = PAGE_SIZE << order; - if (slub_max_order > order && + if (order < slub_max_order && slab_size < slub_min_objects * size) continue; if (slab_size < size) continue; + if (order >= slub_max_order) + break; + rem = slab_size % size; if (rem <= slab_size / 8) @@ -2751,6 +2754,13 @@ static void resiliency_test(void) {}; struct location { unsigned long count; void *addr; + long long sum_time; + long min_time; + long max_time; + long min_pid; + long max_pid; + cpumask_t cpus; + nodemask_t nodes; }; struct loc_track { @@ -2791,11 +2801,12 @@ static int alloc_loc_track(struct loc_track *t, unsigned long max) } static int add_location(struct loc_track *t, struct kmem_cache *s, - void *addr) + const struct track *track) { long start, end, pos; struct location *l; void *caddr; + unsigned long age = jiffies - track->when; start = -1; end = t->count; @@ -2811,12 +2822,29 @@ static int add_location(struct loc_track *t, struct kmem_cache *s, break; caddr = t->loc[pos].addr; - if (addr == caddr) { - t->loc[pos].count++; + if (track->addr == caddr) { + + l = &t->loc[pos]; + l->count++; + if (track->when) { + l->sum_time += age; + if (age < l->min_time) + l->min_time = age; + if (age > l->max_time) + l->max_time = age; + + if (track->pid < l->min_pid) + l->min_pid = track->pid; + if (track->pid > l->max_pid) + l->max_pid = track->pid; + + cpu_set(track->cpu, l->cpus); + } + node_set(page_to_nid(virt_to_page(track)), l->nodes); return 1; } - if (addr < caddr) + if (track->addr < caddr) end = pos; else start = pos; @@ -2834,7 +2862,16 @@ static int add_location(struct loc_track *t, struct kmem_cache *s, (t->count - pos) * sizeof(struct location)); t->count++; l->count = 1; - l->addr = addr; + l->addr = track->addr; + l->sum_time = age; + l->min_time = age; + l->max_time = age; + l->min_pid = track->pid; + l->max_pid = track->pid; + cpus_clear(l->cpus); + cpu_set(track->cpu, l->cpus); + nodes_clear(l->nodes); + node_set(page_to_nid(virt_to_page(track)), l->nodes); return 1; } @@ -2850,11 +2887,8 @@ static void process_slab(struct loc_track *t, struct kmem_cache *s, set_bit(slab_index(p, s, addr), map); for_each_object(p, s, addr) - if (!test_bit(slab_index(p, s, addr), map)) { - void *addr = get_track(s, p, alloc)->addr; - - add_location(t, s, addr); - } + if (!test_bit(slab_index(p, s, addr), map)) + add_location(t, s, get_track(s, p, alloc)); } static int list_locations(struct kmem_cache *s, char *buf, @@ -2888,15 +2922,47 @@ static int list_locations(struct kmem_cache *s, char *buf, } for (i = 0; i < t.count; i++) { - void *addr = t.loc[i].addr; + struct location *l = &t.loc[i]; if (n > PAGE_SIZE - 100) break; - n += sprintf(buf + n, "%7ld ", t.loc[i].count); - if (addr) - n += sprint_symbol(buf + n, (unsigned long)t.loc[i].addr); + n += sprintf(buf + n, "%7ld ", l->count); + + if (l->addr) + n += sprint_symbol(buf + n, (unsigned long)l->addr); else n += sprintf(buf + n, "<not-available>"); + + if (l->sum_time != l->min_time) { + unsigned long remainder; + + n += sprintf(buf + n, " age=%ld/%ld/%ld", + l->min_time, + div_long_long_rem(l->sum_time, l->count, &remainder), + l->max_time); + } else + n += sprintf(buf + n, " age=%ld", + l->min_time); + + if (l->min_pid != l->max_pid) + n += sprintf(buf + n, " pid=%ld-%ld", + l->min_pid, l->max_pid); + else + n += sprintf(buf + n, " pid=%ld", + l->min_pid); + + if (num_online_cpus() > 1 && !cpus_empty(l->cpus)) { + n += sprintf(buf + n, " cpus="); + n += cpulist_scnprintf(buf + n, PAGE_SIZE - n - 50, + l->cpus); + } + + if (num_online_nodes() > 1 && !nodes_empty(l->nodes)) { + n += sprintf(buf + n, " nodes="); + n += nodelist_scnprintf(buf + n, PAGE_SIZE - n - 50, + l->nodes); + } + n += sprintf(buf + n, "\n"); } |