From a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656 Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Wed, 5 Aug 2026 07:52:36 -0700 Subject: workqueue: skip the node_nr_active update for non-unbound workqueues apply_wqattrs_commit() updates node_nr_active->max unconditionally. wq->node_nr_active[] is only allocated for unbound workqueues, so guard the call before per-cpu workqueues start using this path. No functional change: only unbound workqueues reach apply_wqattrs_*() today. Signed-off-by: Breno Leitao Signed-off-by: Tejun Heo --- Documentation/power/tricks.rst | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/power/tricks.rst (limited to 'Documentation/power/tricks.rst') diff --git a/Documentation/power/tricks.rst b/Documentation/power/tricks.rst new file mode 100644 index 000000000..ca787f142 --- /dev/null +++ b/Documentation/power/tricks.rst @@ -0,0 +1,29 @@ +================ +swsusp/S3 tricks +================ + +Pavel Machek + +If you want to trick swsusp/S3 into working, you might want to try: + +* go with minimal config, turn off drivers like USB, AGP you don't + really need + +* turn off APIC and preempt + +* use ext2. At least it has working fsck. [If something seems to go + wrong, force fsck when you have a chance] + +* turn off modules + +* use vga text console, shut down X. [If you really want X, you might + want to try vesafb later] + +* try running as few processes as possible, preferably go to single + user mode. + +* due to video issues, swsusp should be easier to get working than + S3. Try that first. + +When you make it work, try to find out what exactly was it that broke +suspend, and preferably fix that. -- cgit v1.3.1