SPM: Add STATUS_NEED_SCHEDULE to manage scheduler
THRD_EXPECTING_SCHEDULE() calls thrd_next() to decide whether
scheduling is required and when it is required, PendSV will
call thrd_next() again in ipc_schedule(). This duplicated
call of thrd_next() can be avoided by returning a status of
STATUS_NEED_SCHDULABLE from backend in these locations:
- SVC_Handler
- SPM cross API
- Interrupt handler
Signed-off-by: Jianliang Shen <jianliang.shen@arm.com>
Change-Id: I3f1fccbb045938624089e856b5a98c3365c76fcc
diff --git a/secure_fw/spm/include/ffm/backend.h b/secure_fw/spm/include/ffm/backend.h
index 03f2f14..d15fdc2 100644
--- a/secure_fw/spm/include/ffm/backend.h
+++ b/secure_fw/spm/include/ffm/backend.h
@@ -55,12 +55,12 @@
/**
* \brief Set the wait signal pattern in current partition.
*/
-psa_signal_t backend_wait_signals(struct partition_t *p_pt, psa_signal_t signals);
+psa_status_t backend_wait_signals(struct partition_t *p_pt, psa_signal_t signals);
/**
* \brief Set the asserted signal pattern in current partition.
*/
-uint32_t backend_assert_signal(struct partition_t *p_pt, psa_signal_t signal);
+psa_status_t backend_assert_signal(struct partition_t *p_pt, psa_signal_t signal);
/* The component list, and a MACRO indicate this is not a common global. */
extern struct partition_head_t partition_listhead;