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409c65ce0b
Summary: - This commit fixes global IRQ control logic - In previous implementation, g_cpu_irqset for a remote CPU was set in sched_add_readytorun(), sched_remove_readytorun() and up_schedule_sigaction() - In this implementation, they are removed. - Instead, in the pause handler, call enter_critical_setion() which will call up_cpu_paused() then acquire g_cpu_irqlock - So if a new task with irqcount > 1 restarts on the remote CPU, the CPU will only hold a critical section. Thus, the issue such as 'POSSIBLE FOR TWO CPUs TO HOLD A CRITICAL SECTION' could be resolved. - Fix nxsched_resume_scheduler() so that it does not call spin_clrbit() if a CPU does not hold a g_cpu_irqset - Fix nxtask_exit() so that it acquires g_cpu_irqlock - Update TODO Impact: - All SMP implementations Testing: - Tested with smp, ostest with the following configurations - Tested with spresense:wifi_smp (NCPUS=2,4) - Tested with sabre-6quad:smp (QEMU, dev board) - Tested with maix-bit:smp (QEMU) - Tested with esp32-core:smp (QEMU) - Tested with lc823450-xgevk:rndis Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com> |
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| .. | ||
| clock | ||
| environ | ||
| group | ||
| init | ||
| irq | ||
| module | ||
| mqueue | ||
| paging | ||
| pthread | ||
| sched | ||
| semaphore | ||
| signal | ||
| task | ||
| timer | ||
| wdog | ||
| wqueue | ||
| Kconfig | ||
| Makefile | ||