Hi Ben,

thanks for the patch I could verify that NPTL is now working on my
STM32F746G-Disco with only 8 MB of RAM. I configured 16kb stack
size.

Committed and pushed,

 thanks
   Waldemar

Ben Wolsieffer wrote,

> Threads currently have 2-4 MiB stacks by default (depending on the
> platform). This is fine on MMU platforms, where this stack space is not
> actually allocated until it is used, but tends to waste a large amount
> of memory on no-MMU platforms.
> 
> This patch adds a PTHREADS_STACK_DEFAULT_SIZE Kconfig option that allows
> the user to override the default stack size at build time. This allows
> the user to select a reasonable default stack size for the software that
> runs on their system, and avoids the need to patch every package to add
> calls to pthread_attr_setstacksize().
> 
> An alternative to this patch would be to change the hardcoded default
> stack size on no-MMU platforms, but it is difficult to choose an
> appropriate value because the minimum required stack depends on the
> software in use. This would also be a breaking change.
> 
> Signed-off-by: Ben Wolsieffer <ben.wolsief...@hefring.com>
> ---
> 
> Changes in v2:
>   * Entirely move default stack size configuration to Kconfig
> 
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