greybus-dev November 2025

greybus-dev@lists.linaro.org

20 participants
55 discussions

[PATCH] drivers/greybus: add WQ_PERCPU to alloc_workqueue users

by Marco Crivellari

Currently if a user enqueues a work item using schedule_delayed_work() the used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to schedule_work() that is using system_wq and queue_work(), that makes use again of WORK_CPU_UNBOUND. This lack of consistency cannot be addressed without refactoring the API. alloc_workqueue() treats all queues as per-CPU by default, while unbound workqueues must opt-in via WQ_UNBOUND. This default is suboptimal: most workloads benefit from unbound queues, allowing the scheduler to place worker threads where they’re needed and reducing noise when CPUs are isolated. This continues the effort to refactor workqueue APIs, which began with the introduction of new workqueues and a new alloc_workqueue flag in: commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq") commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag") This change adds a new WQ_PERCPU flag to explicitly request alloc_workqueue() to be per-cpu when WQ_UNBOUND has not been specified. With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND), any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND must now use WQ_PERCPU. Once migration is complete, WQ_UNBOUND can be removed and unbound will become the implicit default. Suggested-by: Tejun Heo <tj(a)kernel.org> Signed-off-by: Marco Crivellari <marco.crivellari(a)suse.com> --- drivers/greybus/operation.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/greybus/operation.c b/drivers/greybus/operation.c index 54ccc434a1f7..7e12ffb2dd60 100644 --- a/drivers/greybus/operation.c +++ b/drivers/greybus/operation.c @@ -1238,7 +1238,7 @@ int __init gb_operation_init(void) goto err_destroy_message_cache; gb_operation_completion_wq = alloc_workqueue("greybus_completion", - 0, 0); + WQ_PERCPU, 0); if (!gb_operation_completion_wq) goto err_destroy_operation_cache; -- 2.51.1

1 month

Step-by-Step Guide to Adding a Child on Cathay Pacific

by dakeem＠dotoctuvo.com

How to Add a Child to an Existing Cathay Pacific Booking Need to add a child to your Cathay Pacific reservation? Call 1-833-341-5261 to speak with a live agent who can update your booking quickly and correctly. 📞 Step 1: Prepare Your Booking Details Have ready: • Reservation number • Full names of all passengers • Child’s age and seating preference (lap or own seat) • Any special requests (bassinet, meal, guardian seating) 📞 Step 2: Call Cathay Pacific Dial 1-833-341-5261 to reach a customer support agent. Call early to avoid long wait times. 📞 Step 3: Request to Add the Child • Provide the child’s details and seating preference • Mention any extras (bassinet, special seating, meals) • Agent will confirm seat availability and any fare difference ✅ Step 4: Confirm the Update • Receive an updated itinerary by email • Review all details and fare changes • Follow up with the agent if confirmation isn’t received ✨ Tips • Call early to secure the best seats • Ask about required travel documents for infants or minors • Keep your confirmation handy for check-in Calling 1-833-341-5261 ensures a smooth, family-friendly booking update.

1 month, 1 week

Adding Minors to Existing Cathay Pacific Trips – Guide

by dakeem＠dotoctuvo.com

1 month, 1 week

British Airways Child Booking Made Easy – Here’s How

by dakeem＠dotoctuvo.com

How to Add a Child to an Existing British Airways Booking Need to add a child to your British Airways reservation? Call 1-833-341-5261 to speak with a live agent who can update your booking quickly and correctly. 📞 Step 1: Prepare Your Booking Details Have ready: • Reservation number • Full names of all passengers • Child’s age and seating preference (lap or own seat) • Any special requests (bassinet, meal, guardian seating) 📞 Step 2: Call British Airways Dial 1-833-341-5261 to reach a customer support agent. Call early to avoid long wait times. 📞 Step 3: Request to Add the Child • Provide the child’s details and seating preference • Mention any extras (bassinet, special seating, meals) • Agent will confirm seat availability and any fare difference ✅ Step 4: Confirm the Update • Receive an updated itinerary by email • Review all details and fare changes • Follow up with the agent if confirmation isn’t received ✨ Tips • Call early to secure the best seats • Ask about required travel documents for infants or minors • Keep your confirmation handy for check-in Calling 1-833-341-5261 ensures a smooth, family-friendly booking update.

1 month, 1 week

Avianca Airlines Child Booking Made Easy – Here’s How

by dakeem＠dotoctuvo.com

How to Add a Child to an Existing Avianca Airlines Booking Need to add a child to your Avianca Airlines reservation? Call 1-833-341-5261 to speak with a live agent who can update your booking quickly and correctly. 📞 Step 1: Prepare Your Booking Details Have ready: • Reservation number • Full names of all passengers • Child’s age and seating preference (lap or own seat) • Any special requests (bassinet, meal, guardian seating) 📞 Step 2: Call Avianca Airlines Dial 1-833-341-5261 to reach a customer support agent. Call early to avoid long wait times. 📞 Step 3: Request to Add the Child • Provide the child’s details and seating preference • Mention any extras (bassinet, special seating, meals) • Agent will confirm seat availability and any fare difference ✅ Step 4: Confirm the Update • Receive an updated itinerary by email • Review all details and fare changes • Follow up with the agent if confirmation isn’t received ✨ Tips • Call early to secure the best seats • Ask about required travel documents for infants or minors • Keep your confirmation handy for check-in Calling 1-833-341-5261 ensures a smooth, family-friendly booking update.

1 month, 1 week

Avianca Airlines Child Booking Made Easy – Here’s How

by dakeem＠dotoctuvo.com

1 month, 1 week

Japan Airlines Child Booking Made Easy – Here’s How

by dakeem＠dotoctuvo.com

How to Add a Child to an Existing Japan Airlines Booking Need to add a child to your Japan Airlines reservation? Call 1-833-341-5261 to speak with a live agent who can update your booking quickly and correctly. 📞 Step 1: Prepare Your Booking Details Have ready: • Reservation number • Full names of all passengers • Child’s age and seating preference (lap or own seat) • Any special requests (bassinet, meal, guardian seating) 📞 Step 2: Call Japan Airlines Dial 1-833-341-5261 to reach a customer support agent. Call early to avoid long wait times. 📞 Step 3: Request to Add the Child • Provide the child’s details and seating preference • Mention any extras (bassinet, special seating, meals) • Agent will confirm seat availability and any fare difference ✅ Step 4: Confirm the Update • Receive an updated itinerary by email • Review all details and fare changes • Follow up with the agent if confirmation isn’t received ✨ Tips • Call early to secure the best seats • Ask about required travel documents for infants or minors • Keep your confirmation handy for check-in Calling 1-833-341-5261 ensures a smooth, family-friendly booking update.

1 month, 1 week

LOT Polish Airlines: Add an Infant or Child to Your Trip

by dakeem＠dotoctuvo.com

How to Add a Child to an Existing LOT Polish Airlines Booking Need to add a child to your LOT Polish Airlines reservation? Call 1-833-341-5261 to speak with a live agent who can update your booking quickly and correctly. 📞 Step 1: Prepare Your Booking Details Have ready: • Reservation number • Full names of all passengers • Child’s age and seating preference (lap or own seat) • Any special requests (bassinet, meal, guardian seating) 📞 Step 2: Call LOT Polish Airlines Dial 1-833-341-5261 to reach a customer support agent. Call early to avoid long wait times. 📞 Step 3: Request to Add the Child • Provide the child’s details and seating preference • Mention any extras (bassinet, special seating, meals) • Agent will confirm seat availability and any fare difference ✅ Step 4: Confirm the Update • Receive an updated itinerary by email • Review all details and fare changes • Follow up with the agent if confirmation isn’t received ✨ Tips • Call early to secure the best seats • Ask about required travel documents for infants or minors • Keep your confirmation handy for check-in Calling 1-833-341-5261 ensures a smooth, family-friendly booking update.

1 month, 1 week

Singapore Airlines Child Booking Made Easy – Here’s How

by dakeem＠dotoctuvo.com

How to Add a Child to an Existing Singapore Airlines Booking Need to add a child to your Singapore Airlines reservation? Call 1-833-341-5261 to speak with a live agent who can update your booking quickly and correctly. 📞 Step 1: Prepare Your Booking Details Have ready: • Reservation number • Full names of all passengers • Child’s age and seating preference (lap or own seat) • Any special requests (bassinet, meal, guardian seating) 📞 Step 2: Call Singapore Airlines Dial 1-833-341-5261 to reach a customer support agent. Call early to avoid long wait times. 📞 Step 3: Request to Add the Child • Provide the child’s details and seating preference • Mention any extras (bassinet, special seating, meals) • Agent will confirm seat availability and any fare difference ✅ Step 4: Confirm the Update • Receive an updated itinerary by email • Review all details and fare changes • Follow up with the agent if confirmation isn’t received ✨ Tips • Call early to secure the best seats • Ask about required travel documents for infants or minors • Keep your confirmation handy for check-in Calling 1-833-341-5261 ensures a smooth, family-friendly booking update.

1 month, 1 week

Can You Add a Child to a Qatar Airways Flight? Here’s How

by dakeem＠dotoctuvo.com

How to Add a Child to an Existing Qatar Airways Booking Need to add a child to your Qatar Airways reservation? Call 1-833-341-5261 to speak with a live agent who can update your booking quickly and correctly. 📞 Step 1: Prepare Your Booking Details Have ready: • Reservation number • Full names of all passengers • Child’s age and seating preference (lap or own seat) • Any special requests (bassinet, meal, guardian seating) 📞 Step 2: Call Qatar Airways Dial 1-833-341-5261 to reach a customer support agent. Call early to avoid long wait times. 📞 Step 3: Request to Add the Child • Provide the child’s details and seating preference • Mention any extras (bassinet, special seating, meals) • Agent will confirm seat availability and any fare difference ✅ Step 4: Confirm the Update • Receive an updated itinerary by email • Review all details and fare changes • Follow up with the agent if confirmation isn’t received ✨ Tips • Call early to secure the best seats • Ask about required travel documents for infants or minors • Keep your confirmation handy for check-in Calling 1-833-341-5261 ensures a smooth, family-friendly booking update.

1 month, 1 week

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greybus-dev November 2025