[RFC PATCH v2 38/48] lib: Kconfig: add a config symbol for getting lmb memory map updates

[Sughosh Ganu]

Add a Kconfig symbol to enable getting updates on any memory map
changes that might be done by the LMB module. This notification
mechanism can then be used to have a synchronous view of allocated and
free memory.

Signed-off-by: Sughosh Ganu <sughosh.ganu at linaro.org>
---
Changes since V1:
* Change the description to highlight only LMB notifications.
* Add a separate line for dependencies.

 lib/Kconfig | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/Kconfig b/lib/Kconfig
index 7eea517b3b..b422183a0f 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -74,6 +74,16 @@ config HAVE_PRIVATE_LIBGCC
 config LIB_UUID
 	bool
 
+config MEM_MAP_UPDATE_NOTIFY
+	bool "Get notified of any changes to the LMB memory map"
+	depends on EVENT && LMB && EFI_LOADER
+	default y
+	help
+	  Enable this option to get notification on any changes to the
+	  memory that is allocated or freed by the LMB module. This will
+	  allow different modules that allocate memory or maintain a memory
+	  map to have a synchronous view of available and allocated memory.
+
 config RANDOM_UUID
 	bool "GPT Random UUID generation"
 	select LIB_UUID
-- 
2.34.1