Currently there is only THREAD_STACKSIZE_DEFAULT (or THREAD_STACKSIZE_PRINTF) as a real option to set up your stacksize for threads. Some more options would be nice. I analyzed some stack usage and some stacks are only using half, or sometimes even only a quarter of the allocated stack size on most boards I looked at.

Suggestions for these macros:

• THREAD_STACKSIZE_TINY: an eighth of THREAD_STACKSIZE_DEFAULT
• THREAD_STACKSIZE_SMALL: a quarter of THREAD_STACKSIZE_DEFAULT
• THREAD_STACKSIZE_MEDIUM: half of THREAD_STACKSIZE_DEFAULT
• THREAD_STACKSIZE_LARGE: alias for THREAD_STACKSIZE_DEFAULT
• THREAD_STACKSIZE_HUGE: double of THREAD_STACKSIZE_DEFAULT