This commit simplified the wdog expiration handling by introducing the
`g_sched_event` timer.
Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
If the wdog use the fine-grained spin-lock, and allow the callback execution without the lock held, there will be incorrect interleaving.
E.g. The first `nxsem_timeout` callback function caused the second semaphore wait to fail.
Core 0 [nxsem_clockwait] | Core 1
enter_critical_section() | ...
wd_start(nxsem_timeout) | ...
nxsem_wait(sem) | wd_expiration() --> nxsem_timeout
wd_cancel(&rtcb->waitdog) | try enter_critical_section()
leave_critical_section() | Failed retry...
....nxsem_clockwait | Failed retry...
enter_critical_section() | Failed retry...
wd_start(nxsem_timeout) | Failed retry...
nxsem_wait(sem) | Core 1 enter the critical section
| nxsem_wait_irq(wtcb, ETIMEDOUT) -> incorrectly wake-up the rtcb.
Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
This patch moved the g_wdtimernested to wd_start.c
Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
Signed-off-by: ligd <liguiding1@xiaomi.com>
This commit refactors the wdog module to use absolute time representation internally. The main improvements include:
1. Fixed recursive watchdog handling caused by calling wd_start within watchdog timeout callback function.
2. Simplified timer processing to improve performance and enhance code readability.
3. Improved accuracy of timers.
4. Reduced critical section and interrupt disable time, improving real-time performance.
Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
Signed-off-by: ligd <liguiding1@xiaomi.com>
to save the preserved space(1KB) and also avoid the heap overhead
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I694073f68e1bd63960cedeea1ddec441437be025
