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kernel: demote K_THREAD_STACK_BUFFER() to private

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This macro is slated for complete removal, as it's not possible
on arches with an MPU stack guard to know the true buffer bounds
without also knowing the runtime state of its associated thread.

As removing this completely would be invasive to where we are
in the 1.14 release, demote to a private kernel Z_ API instead.
The current way that the macro is being used internally will
not cause any undue harm, we just don't want any external code
depending on it.

The final work to remove this (and overhaul stack specification in
general) will take place in 1.15 in the context of #14269

Fixes: #14766

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2019-04-04 12:05:28 -07:00 • committed by Anas Nashif
commit 4e5c093e66
29 changed files with 50 additions and 51 deletions
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4
soc/xtensa/esp32/esp32-mp.c
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@ -205,12 +205,12 @@ void z_arch_start_cpu(int cpu_num, k_thread_stack_t *stack, int sz,
sr.cpu = cpu_num;
sr.fn = fn;
sr.stack_top = K_THREAD_STACK_BUFFER(stack) + sz;
sr.stack_top = Z_THREAD_STACK_BUFFER(stack) + sz;
sr.arg = arg;
sr.vecbase = vb;
sr.alive = &alive_flag;
appcpu_top = K_THREAD_STACK_BUFFER(stack) + sz;
appcpu_top = Z_THREAD_STACK_BUFFER(stack) + sz;
start_rec = &sr;