diff options
Diffstat (limited to 'kern/kmem.c')
| -rw-r--r-- | kern/kmem.c | 112 |
1 files changed, 37 insertions, 75 deletions
diff --git a/kern/kmem.c b/kern/kmem.c index af3eccac..2718c09e 100644 --- a/kern/kmem.c +++ b/kern/kmem.c @@ -1027,7 +1027,6 @@ slab_free: void kmem_cache_info(struct kmem_cache *cache) { - struct kmem_cache *cache_stats; char flags_str[64]; if (cache == NULL) { @@ -1041,55 +1040,36 @@ kmem_cache_info(struct kmem_cache *cache) return; } - cache_stats = kmem_alloc(sizeof(*cache_stats)); - - if (cache_stats == NULL) { - printk("kmem: unable to allocate memory for cache stats\n"); - return; - } + snprintf(flags_str, sizeof(flags_str), "%s%s%s", + (cache->flags & KMEM_CF_DIRECT) ? " DIRECT" : "", + (cache->flags & KMEM_CF_SLAB_EXTERNAL) ? " SLAB_EXTERNAL" : "", + (cache->flags & KMEM_CF_VERIFY) ? " VERIFY" : ""); /* mutex_lock(&cache->mutex); */ - cache_stats->flags = cache->flags; - cache_stats->obj_size = cache->obj_size; - cache_stats->align = cache->align; - cache_stats->buf_size = cache->buf_size; - cache_stats->bufctl_dist = cache->bufctl_dist; - cache_stats->slab_size = cache->slab_size; - cache_stats->color_max = cache->color_max; - cache_stats->bufs_per_slab = cache->bufs_per_slab; - cache_stats->nr_objs = cache->nr_objs; - cache_stats->nr_bufs = cache->nr_bufs; - cache_stats->nr_slabs = cache->nr_slabs; - cache_stats->nr_free_slabs = cache->nr_free_slabs; - strcpy(cache_stats->name, cache->name); - cache_stats->buftag_dist = cache->buftag_dist; - cache_stats->redzone_pad = cache->redzone_pad; - cache_stats->cpu_pool_type = cache->cpu_pool_type; - /* mutex_unlock(&cache->mutex); */ - snprintf(flags_str, sizeof(flags_str), "%s%s%s", - (cache_stats->flags & KMEM_CF_DIRECT) ? " DIRECT" : "", - (cache_stats->flags & KMEM_CF_SLAB_EXTERNAL) ? " SLAB_EXTERNAL" : "", - (cache_stats->flags & KMEM_CF_VERIFY) ? " VERIFY" : ""); - - printk("kmem: name: %s\n", cache_stats->name); - printk("kmem: flags: 0x%x%s\n", cache_stats->flags, flags_str); - printk("kmem: obj_size: %zu\n", cache_stats->obj_size); - printk("kmem: align: %zu\n", cache_stats->align); - printk("kmem: buf_size: %zu\n", cache_stats->buf_size); - printk("kmem: bufctl_dist: %zu\n", cache_stats->bufctl_dist); - printk("kmem: slab_size: %zu\n", cache_stats->slab_size); - printk("kmem: color_max: %zu\n", cache_stats->color_max); - printk("kmem: bufs_per_slab: %lu\n", cache_stats->bufs_per_slab); - printk("kmem: nr_objs: %lu\n", cache_stats->nr_objs); - printk("kmem: nr_bufs: %lu\n", cache_stats->nr_bufs); - printk("kmem: nr_slabs: %lu\n", cache_stats->nr_slabs); - printk("kmem: nr_free_slabs: %lu\n", cache_stats->nr_free_slabs); - printk("kmem: buftag_dist: %zu\n", cache_stats->buftag_dist); - printk("kmem: redzone_pad: %zu\n", cache_stats->redzone_pad); - printk("kmem: cpu_pool_size: %d\n", cache_stats->cpu_pool_type->array_size); - - kmem_free(cache_stats, sizeof(*cache_stats)); + printk("kmem: name: %s\n" + "kmem: flags: 0x%x%s\n" + "kmem: obj_size: %zu\n" + "kmem: align: %zu\n" + "kmem: buf_size: %zu\n" + "kmem: bufctl_dist: %zu\n" + "kmem: slab_size: %zu\n" + "kmem: color_max: %zu\n" + "kmem: bufs_per_slab: %lu\n" + "kmem: nr_objs: %lu\n" + "kmem: nr_bufs: %lu\n" + "kmem: nr_slabs: %lu\n" + "kmem: nr_free_slabs: %lu\n" + "kmem: buftag_dist: %zu\n" + "kmem: redzone_pad: %zu\n" + "kmem: cpu_pool_size: %d\n", cache->name, cache->flags, flags_str, + cache->obj_size, cache->align, cache->buf_size, cache->bufctl_dist, + cache->slab_size, cache->color_max, cache->bufs_per_slab, + cache->nr_objs, cache->nr_bufs, cache->nr_slabs, + cache->nr_free_slabs, cache->buftag_dist, cache->redzone_pad, + cache->cpu_pool_type->array_size); + + /* mutex_unlock(&cache->mutex); */ } void __init @@ -1248,47 +1228,29 @@ kmem_free(void *ptr, size_t size) void kmem_info(void) { - struct kmem_cache *cache, *cache_stats; + struct kmem_cache *cache; size_t mem_usage, mem_reclaimable; - cache_stats = kmem_alloc(sizeof(*cache_stats)); - - if (cache_stats == NULL) { - printk("kmem: unable to allocate memory for cache stats\n"); - return; - } - printk("kmem: cache obj slab bufs objs bufs " - " total reclaimable\n"); - printk("kmem: name size size /slab usage count " + " total reclaimable\n" + "kmem: name size size /slab usage count " " memory memory\n"); /* mutex_lock(&kmem_cache_list_mutex); */ list_for_each_entry(&kmem_cache_list, cache, node) { /* mutex_lock(&cache->mutex); */ - cache_stats->obj_size = cache->obj_size; - cache_stats->slab_size = cache->slab_size; - cache_stats->bufs_per_slab = cache->bufs_per_slab; - cache_stats->nr_objs = cache->nr_objs; - cache_stats->nr_bufs = cache->nr_bufs; - cache_stats->nr_slabs = cache->nr_slabs; - cache_stats->nr_free_slabs = cache->nr_free_slabs; - strcpy(cache_stats->name, cache->name); - /* mutex_unlock(&cache->mutex); */ - mem_usage = (cache_stats->nr_slabs * cache_stats->slab_size) >> 10; - mem_reclaimable = - (cache_stats->nr_free_slabs * cache_stats->slab_size) >> 10; + mem_usage = (cache->nr_slabs * cache->slab_size) >> 10; + mem_reclaimable = (cache->nr_free_slabs * cache->slab_size) >> 10; printk("kmem: %-19s %6zu %3zuk %4lu %6lu %6lu %7zuk %10zuk\n", - cache_stats->name, cache_stats->obj_size, - cache_stats->slab_size >> 10, cache_stats->bufs_per_slab, - cache_stats->nr_objs, cache_stats->nr_bufs, mem_usage, - mem_reclaimable); + cache->name, cache->obj_size, cache->slab_size >> 10, + cache->bufs_per_slab, cache->nr_objs, cache->nr_bufs, + mem_usage, mem_reclaimable); + + /* mutex_unlock(&cache->mutex); */ } /* mutex_unlock(&kmem_cache_list_mutex); */ - - kmem_free(cache_stats, sizeof(*cache_stats)); } |