arch/arm/src/stm32/hardware/stm32_adc_v2g4.h:
* New file.
arch/arm/src/stm32/hardware/stm32_adc.h:
* Distinguish between the normal STM32 ADC IPv2 core and the
modified IPv2 core used in the G4 family, and include either
stm32_adc_v2.h or stm32_adc_v2g4.h as needed.
Summary:
- This commit introduces SP_WFE() and SP_SEV() to be used for spinlock
- Also, use wfe/sev instructions for ARMV7-A to reduce power consumption
Impact:
- ARMV7-a SMP only
Testing:
- sabre-6quad:smp (QEMU, dev board)
- maix-bit:smp, esp32-devkitc:smp, spresense:smp sim:smp (compile only)
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Summary:
- Because this_task() returns the current task of the current CPU
Impact:
- SMP only
Testing:
- Tested with sabre-6quad:smp (QEMU)
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Summary
- This commit fixes interrupt handling for SMP
- The following are the changes
- Introduce up_copyfullstate.c
- Add enter_critical_section() to up_exit()
- Add a critical section to up_schedule_sigaction()
- Introduce pseudo timer thread to send periodic events
- UART and interval timer are now handled in the pause handler
- Apply the same SMP related code as other CPU architectures
- However, signal handling and context switching are not changed
- Also enable debug features and some tools in smp/defconfig
Imact
- SMP only
Testing
- Tested with sim:smp on ubuntu18.04 x86_64
- Tested with hello, taskset, smp, ostest
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
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>
