mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-08-24 14:35:46 +00:00
379b93f0d3
Check if next ready thread is same as current thread before calling z_swap. This avoids calling swap to just go back to the original thread. Original code: thread 0x20000118 switches out and then in again... >> 0x20000118 gives semaphore(signal): 0x20000104 (count: 0) >> thread ready: 0x20000118 >> 0x20000118 switched out >> 0x20000118 switched in >> end call to k_sem_give >> 0x20000118 takes semaphore(wait): 0x200000f4 (count: 0) >> thread pend: 0x20000118 >> 0x20000118 switched out >> 0x200001d0 switched in with this patch: >> 0x200001d0 gives semaphore(signal): 0x200000f4 (count: 0) >> thread ready: 0x200001d0 >> end call to k_sem_give >> 0x200001d0 takes semaphore(wait): 0x20000104 (count: 0) >> thread pend: 0x200001d0 >> 0x200001d0 switched out >> 0x20000118 switched in >> end call to k_sem_take The above is output from tracing with a custom format used for debugging. Signed-off-by: Anas Nashif <anas.nashif@intel.com> |
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| .. | ||
| include | ||
| atomic_c.c | ||
| cache_handlers.c | ||
| CMakeLists.txt | ||
| compiler_stack_protect.c | ||
| device.c | ||
| errno.c | ||
| fatal.c | ||
| futex.c | ||
| idle.c | ||
| init.c | ||
| Kconfig | ||
| Kconfig.power_mgmt | ||
| kheap.c | ||
| mailbox.c | ||
| mem_domain.c | ||
| mem_slab.c | ||
| mempool_sys.c | ||
| mempool.c | ||
| mmu.c | ||
| msg_q.c | ||
| mutex.c | ||
| pipes.c | ||
| poll.c | ||
| queue.c | ||
| sched.c | ||
| sem.c | ||
| smp.c | ||
| stack.c | ||
| system_work_q.c | ||
| thread_abort.c | ||
| thread.c | ||
| timeout.c | ||
| timer.c | ||
| userspace_handler.c | ||
| userspace.c | ||
| version.c | ||
| work_q.c | ||