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042d8ecca9
The existing __swap() mechanism is too high level for some
applications because of its scheduler-awareness. This introduces a
new _arch_switch() mechanism, which is a simpler primitive that looks
like:
void _arch_switch(void *handle, void **old_handle_out);
The new thread handle (typically just a stack pointer) is specified
explicitly instead of being picked up from the scheduler by
per-architecture code, and on return the "old" thread handle that got
switched out is returned through the pointer.
The new primitive (currently available only on xtensa) is selected
when CONFIG_USE_SWITCH is "y". A new C _Swap() implementation based
on this primitive is then added which operates compatibly.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
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| .. | ||
| include | ||
| posix | ||
| alert.c | ||
| atomic_c.c | ||
| CMakeLists.txt | ||
| compiler_stack_protect.c | ||
| device.c | ||
| errno.c | ||
| idle.c | ||
| init.c | ||
| int_latency_bench.c | ||
| Kconfig | ||
| Kconfig.event_logger | ||
| Kconfig.power_mgmt | ||
| mailbox.c | ||
| mem_domain.c | ||
| mem_slab.c | ||
| mempool.c | ||
| msg_q.c | ||
| mutex.c | ||
| pipes.c | ||
| poll.c | ||
| queue.c | ||
| sched.c | ||
| sem.c | ||
| stack.c | ||
| sys_clock.c | ||
| system_work_q.c | ||
| thread_abort.c | ||
| thread.c | ||
| timer.c | ||
| userspace_handler.c | ||
| userspace.c | ||
| version.c | ||
| work_q.c | ||