diff options
| author | Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | 2013-03-12 21:26:49 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-03-13 15:13:48 +0400 |
| commit | a42277c739c29b06cb27502347f557e11fed8b0e (patch) | |
| tree | e6a8ebb440108a98fe151d9f6ba908eefb01f1f1 /drivers/base | |
| parent | eb4cb76ff00e27858e5c80f69dbe8cc15364578c (diff) | |
| download | linux-a42277c739c29b06cb27502347f557e11fed8b0e.tar.xz | |
regmap: rbtree Expose total memory consumption in the rbtree debugfs entry
Provide a feel of how much overhead the rbtree cache adds to
the game.
[Slightly reworded output in debugfs -- broonie]
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regcache-rbtree.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c index 461cff888bb1..045319615608 100644 --- a/drivers/base/regmap/regcache-rbtree.c +++ b/drivers/base/regmap/regcache-rbtree.c @@ -138,15 +138,20 @@ static int rbtree_show(struct seq_file *s, void *ignored) struct regcache_rbtree_node *n; struct rb_node *node; unsigned int base, top; + size_t mem_size; int nodes = 0; int registers = 0; int this_registers, average; map->lock(map); + mem_size = sizeof(*rbtree_ctx); + for (node = rb_first(&rbtree_ctx->root); node != NULL; node = rb_next(node)) { n = container_of(node, struct regcache_rbtree_node, node); + mem_size += sizeof(*n); + mem_size += (n->blklen * map->cache_word_size); regcache_rbtree_get_base_top_reg(map, n, &base, &top); this_registers = ((top - base) / map->reg_stride) + 1; @@ -161,8 +166,8 @@ static int rbtree_show(struct seq_file *s, void *ignored) else average = 0; - seq_printf(s, "%d nodes, %d registers, average %d registers\n", - nodes, registers, average); + seq_printf(s, "%d nodes, %d registers, average %d registers, used %zu bytes\n", + nodes, registers, average, mem_size); map->unlock(map); |