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Reset xNextTaskUnblockTime in task notify FromISR APIs #1111
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If a task is blocked waiting for a notification then xNextTaskUnblockTime might be set to the blocked task's timeout time. If the task is unblocked for a reason other than a timeout xNextTaskUnblockTime is normally left unchanged, because it will automatically get reset to a new value when the tick count equals xNextTaskUnblockTime. However if tickless idle is used it is important to enter sleep mode at the earliest possible time - so reset xNextTaskUnblockTime here to ensure it is updated at the earliest possible time. This was reported here - https://forums.freertos.org/t/the-vtaskgenericnotifygivefromisr-function-need-call-prvresetnexttaskunblocktime/21090 Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
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FreeRTOS/FreeRTOS-Kernel#1111 Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
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kar-rahul-aws
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Aug 5, 2024
Quality Gate passedIssues Measures |
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AniruddhaKanhere
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* Unit test updates for kernel PR #1111 FreeRTOS/FreeRTOS-Kernel#1111 Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com> * Fix doxygen check Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com> --------- Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
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* Unit test updates for kernel PR FreeRTOS#1111 FreeRTOS/FreeRTOS-Kernel#1111 Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com> * Fix doxygen check Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com> --------- Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
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Description
If a task is blocked waiting for a notification then xNextTaskUnblockTime might be set to the blocked task's timeout time. If the task is unblocked for a reason other than a timeout xNextTaskUnblockTime is normally left unchanged, because it will automatically get reset to a new value when the tick count equals xNextTaskUnblockTime. However if tickless idle is used it is important to enter sleep mode at the earliest possible time - so reset xNextTaskUnblockTime here to ensure it is updated at the earliest possible time.
Test Steps
Tested the change on STM32H7 to ensure that xNextTaskUnblockTime gets reset after the call to vTaskNotifyGiveFromISR.
Checklist:
Related Issue
https://forums.freertos.org/t/the-vtaskgenericnotifygivefromisr-function-need-call-prvresetnexttaskunblocktime/21090
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