commit 306faea69a4426358a9b8c57a77f56783eb9666c
author Johan Hedberg <johan.hedberg@silabs.com> Tue Apr 29 14:23:09 2025 +0300
committer Benjamin Cabé <kartben@gmail.com> Thu May 08 14:01:00 2025 +0200
tree 9e7a7677c0b187d97012669aaee5993dd9cf56e3
parent 9ecca8728161b34dc9f508396d1a1b6cb24a2e15

Bluetooth: samples: Fix minimal configuration stack sizes

With recent changes to the host stack and crypto subsystem, the actual
usage of the system and long workqueues has changed.

Here's the measured usage when doing LE SC pairing on a Cortex M0 target:

BT LW WQ            : STACK: unused 360 usage 1040 / 1400 (74 %); CPU: 4 %
sysworkq            : STACK: unused 0 usage 1024 / 1024 (100 %); CPU: 0 %

Signed-off-by: Johan Hedberg <johan.hedberg@silabs.com>

samples/bluetooth/central_hr/prj_minimal.conf

diff --git a/samples/bluetooth/central_hr/prj_minimal.conf b/samples/bluetooth/central_hr/prj_minimal.conf
index 2a4b31d..3ea96d6 100644
--- a/samples/bluetooth/central_hr/prj_minimal.conf
+++ b/samples/bluetooth/central_hr/prj_minimal.conf
@@ -65,7 +65,8 @@
 CONFIG_BT_RX_STACK_SIZE=1024
 CONFIG_BT_HCI_TX_STACK_SIZE_WITH_PROMPT=y
 CONFIG_BT_HCI_TX_STACK_SIZE=640
-CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
+CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=1100
+CONFIG_BT_LONG_WQ_STACK_SIZE=1100
 CONFIG_IDLE_STACK_SIZE=128
 CONFIG_MAIN_STACK_SIZE=640
 CONFIG_ISR_STACK_SIZE=1024

samples/bluetooth/peripheral_hr/prj_minimal.conf

diff --git a/samples/bluetooth/peripheral_hr/prj_minimal.conf b/samples/bluetooth/peripheral_hr/prj_minimal.conf
index 5e3f92c..8f9c2b8 100644
--- a/samples/bluetooth/peripheral_hr/prj_minimal.conf
+++ b/samples/bluetooth/peripheral_hr/prj_minimal.conf
@@ -71,7 +71,8 @@
 CONFIG_BT_RX_STACK_SIZE=1024
 CONFIG_BT_HCI_TX_STACK_SIZE_WITH_PROMPT=y
 CONFIG_BT_HCI_TX_STACK_SIZE=640
-CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
+CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=1100
+CONFIG_BT_LONG_WQ_STACK_SIZE=1100
 CONFIG_IDLE_STACK_SIZE=128
 CONFIG_MAIN_STACK_SIZE=640
 CONFIG_ISR_STACK_SIZE=1024