[PATCH v2 04/14] lib: Kconfig: add a config symbol for getting lmb memory map updates

[Sughosh Ganu]

On Fri, 11 Oct 2024 at 15:56, Ilias Apalodimas
<ilias.apalodimas at linaro.org> wrote:
>
> Hi Sughosh
>
> On Tue, 8 Oct 2024 at 21:15, Sughosh Ganu <sughosh.ganu at linaro.org> 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.
> >
>
> Are there size concerns to enable or disable this? I think we should
> always sync and get rid of this

This is needed only for platforms that enable EFI_LOADER. I haven't
checked if not having this check would result in any kind of build
failures and/or size impact on platforms that do not enable
EFI_LOADER. I will check this, and keep it if any build/size impact
happens.

-sughosh

>
> Thanks
> /Ilias
> > Signed-off-by: Sughosh Ganu <sughosh.ganu at linaro.org>
> > ---
> > Changes since V1:
> > * Add a config for SPL stage
> >
> >  lib/Kconfig | 17 +++++++++++++++++
> >  1 file changed, 17 insertions(+)
> >
> > diff --git a/lib/Kconfig b/lib/Kconfig
> > index 1dd4f271595..61452f7ac94 100644
> > --- a/lib/Kconfig
> > +++ b/lib/Kconfig
> > @@ -75,6 +75,23 @@ config LIB_UUID
> >         bool
> >         select SHA1
> >
> > +config MEM_MAP_UPDATE_NOTIFY
> > +       bool "Get notified of any changes to the LMB memory map"
> > +       default y if EFI_LOADER
> > +       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 SPL_MEM_MAP_UPDATE_NOTIFY
> > +       bool "Get notified of any changes to the LMB memory map in SPL"
> > +       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
> >