dm: core: Add a command to show driver model statistics
This command shows the memory used by driver model along with various
hints as to what it might be if some 'core' tags were moved to use the
tag list instead of a core (i.e. always-there) pointer.
This may help with future work to reduce memory usage.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/core/Kconfig b/drivers/core/Kconfig
index 9b9a714..97dc699 100644
--- a/drivers/core/Kconfig
+++ b/drivers/core/Kconfig
@@ -75,6 +75,17 @@
help
Say Y here if you want to compile in debug messages in DM core.
+config DM_STATS
+ bool "Collect and show driver model stats"
+ depends on DM
+ default y if SANDBOX
+ help
+ Enable this to collect and display memory statistics about driver
+ model. This can help to figure out where all the memory is going and
+ to find optimisations.
+
+ To display the memory stats, use the 'dm mem' command.
+
config DM_DEVICE_REMOVE
bool "Support device removal"
depends on DM