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The following commit(s) were added to refs/heads/master by this push:
new 199c301a8e drivers/misc/optee_smc: Explicitly yield during NW
interrupts
199c301a8e is described below
commit 199c301a8ef2138494fd573adb7935a395c49178
Author: George Poulios <gpoul...@census-labs.com>
AuthorDate: Thu Jul 31 09:41:00 2025 +0300
drivers/misc/optee_smc: Explicitly yield during NW interrupts
CPU heavy OP-TEE calls would starve the Normal World tasks.
OP-TEE foreign interrupts were delivered to NW but we would
resume OP-TEE immediately without giving any potentially
unblocked tasks a chance to run. This would violate real-
time guarantees. Fix that by calling sched_yield() during
OP-TEE return with reason foreign interrupts.
Signed-off-by: George Poulios <gpoul...@census-labs.com>
---
drivers/misc/optee_smc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/misc/optee_smc.c b/drivers/misc/optee_smc.c
index 9672f269ac..3d99ccc664 100644
--- a/drivers/misc/optee_smc.c
+++ b/drivers/misc/optee_smc.c
@@ -207,6 +207,10 @@ static void optee_smc_handle_rpc(FAR struct
optee_priv_data *priv_,
break;
case OPTEE_SMC_RPC_FUNC_FOREIGN_INTR:
+
+ /* yield to tasks of same priority to avoid starving the NW */
+
+ sched_yield();
break;
default:
