[RFC PATCH v2 38/48] lib: Kconfig: add a config symbol for getting lmb memory map updates
Tom Rini
trini at konsulko.com
Fri Jul 5 21:50:57 CEST 2024
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 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.
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.
--
Tom
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