On 30/03/2016, 11:52, "Benjamin Walsh" <benjamin.walsh(a)windriver.com> wrote:

You can post the patch and add me for review. From what I've seen,
there's ~10 tests that fail under sanitycheck with SRAM overflow from
hundreds of bytes, to couple of kBs. My idea was to go through the
failing ones and see if it's possible trim the amount of memory
required in the manner similar to what was done to the latency
benchmarks. If that's not possible, the test will get disabled for
this particular target.

Now that I've seen the patch it got me thinking. What if we added an
opt-in debug code for fiber/tasks that helped to measure stack usage?
This could be something really simple, like initializing the stack
area with some known pattern (ex. '.') and once the fiber/task is

That part is already in the kernel: CONFIG_INIT_STACKS fills the stacks
with 0xaa when threads are initialized.

also look at

include/misc/stack.h

for Stack usage analysis helpers