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

On Thu, Jul 04, 2024 at 01:05:34PM +0530, Sughosh Ganu wrote:

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@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.
  

This needs to be select'd when it's going to be used, opting out of making sure memory reservations are obeyed isn't a good idea.