diff options
| -rw-r--r-- | module/os/linux/spl/spl-kmem-cache.c | 14 | ||||
| -rw-r--r-- | module/os/linux/spl/spl-proc.c | 28 |
2 files changed, 36 insertions, 6 deletions
diff --git a/module/os/linux/spl/spl-kmem-cache.c b/module/os/linux/spl/spl-kmem-cache.c index 853cf33f0..865f2e2f8 100644 --- a/module/os/linux/spl/spl-kmem-cache.c +++ b/module/os/linux/spl/spl-kmem-cache.c @@ -1467,6 +1467,17 @@ spl_kmem_cache_alloc(spl_kmem_cache_t *skc, int flags) obj = kmem_cache_alloc(slc, kmem_flags_convert(flags)); } while ((obj == NULL) && !(flags & KM_NOSLEEP)); + if (obj != NULL) { + /* + * Even though we leave everything up to the + * underlying cache we still keep track of + * how many objects we've allocated in it for + * better debuggability. + */ + spin_lock(&skc->skc_lock); + skc->skc_obj_alloc++; + spin_unlock(&skc->skc_lock); + } goto ret; } @@ -1540,6 +1551,9 @@ spl_kmem_cache_free(spl_kmem_cache_t *skc, void *obj) */ if (skc->skc_flags & KMC_SLAB) { kmem_cache_free(skc->skc_linux_cache, obj); + spin_lock(&skc->skc_lock); + skc->skc_obj_alloc--; + spin_unlock(&skc->skc_lock); return; } diff --git a/module/os/linux/spl/spl-proc.c b/module/os/linux/spl/spl-proc.c index a75bcc214..13eaa6301 100644 --- a/module/os/linux/spl/spl-proc.c +++ b/module/os/linux/spl/spl-proc.c @@ -437,11 +437,29 @@ slab_seq_show(struct seq_file *f, void *p) ASSERT(skc->skc_magic == SKC_MAGIC); - /* - * Backed by Linux slab see /proc/slabinfo. - */ - if (skc->skc_flags & KMC_SLAB) + if (skc->skc_flags & KMC_SLAB) { + /* + * This cache is backed by a generic Linux kmem cache which + * has its own accounting. For these caches we only track + * the number of active allocated objects that exist within + * the underlying Linux slabs. For the overall statistics of + * the underlying Linux cache please refer to /proc/slabinfo. + */ + spin_lock(&skc->skc_lock); + seq_printf(f, "%-36s ", skc->skc_name); + seq_printf(f, "0x%05lx %9s %9lu %8s %8u " + "%5s %5s %5s %5s %5lu %5s %5s %5s %5s\n", + (long unsigned)skc->skc_flags, + "-", + (long unsigned)(skc->skc_obj_size * skc->skc_obj_alloc), + "-", + (unsigned)skc->skc_obj_size, + "-", "-", "-", "-", + (long unsigned)skc->skc_obj_alloc, + "-", "-", "-", "-"); + spin_unlock(&skc->skc_lock); return (0); + } spin_lock(&skc->skc_lock); seq_printf(f, "%-36s ", skc->skc_name); @@ -461,9 +479,7 @@ slab_seq_show(struct seq_file *f, void *p) (long unsigned)skc->skc_obj_deadlock, (long unsigned)skc->skc_obj_emergency, (long unsigned)skc->skc_obj_emergency_max); - spin_unlock(&skc->skc_lock); - return (0); } |