kernel.git/drivers/block/aoe/aoemain.c, branch linux-rolling-stable

drivers/block: WQ_PERCPU added to alloc_workqueue users

2025-09-09T15:11:31Z

Currently if a user enqueue 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 consistentcy 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 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 patch adds a new WQ_PERCPU flag to explicitly request the use of the per-CPU behavior. Both flags coexist for one release cycle to allow callers to transition their calls. Once migration is complete, WQ_UNBOUND can be removed and unbound will become the implicit default. 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. All existing users have been updated accordingly. Suggested-by: Tejun Heo Signed-off-by: Marco Crivellari Signed-off-by: Jens Axboe

treewide: Switch/rename to timer_delete[_sync]()

2025-04-05T08:30:12Z

timer_delete[_sync]() replaces del_timer[_sync](). Convert the whole tree over and remove the historical wrapper inlines. Conversion was done with coccinelle plus manual fixups where necessary. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar

aoe: Avoid flush_scheduled_work() usage

2022-05-01T12:41:41Z

Flushing system-wide workqueues is dangerous and will be forbidden. Replace system_wq with local aoe_wq. Link: https://lkml.kernel.org/r/49925af7-78a8-a3dd-bce6-cfc02e1a9236@I-love.SAKURA.ne.jp Signed-off-by: Tetsuo Handa Link: https://lore.kernel.org/r/abb37616-eec9-2794-e21e-7c623085d987@I-love.SAKURA.ne.jp Signed-off-by: Jens Axboe

aoe: add __exit annotation

2018-12-16T16:01:38Z

Add __exit annotation to cleanup helper which is only called once in the module. Signed-off-by: Chengguang Xu Signed-off-by: Jens Axboe

block/aoe: discover_timer: Convert timers to use timer_setup()

2017-11-06T20:50:09Z

In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. This refactors the discover_timer to remove the needless locking and state machine used for synchronizing timer death. Using del_timer_sync() will already do the right thing. Cc: Jens Axboe Cc: "Ed L. Cashin" Cc: Thomas Gleixner Signed-off-by: Kees Cook

aoe: whitespace cleanup

2012-12-18T01:15:24Z

Signed-off-by: Ed Cashin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

aoe: update copyright year in touched files

2012-10-05T18:05:28Z

Signed-off-by: Ed Cashin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

aoe: kernel thread handles I/O completions for simple locking

2012-10-05T18:05:24Z

Make the frames the aoe driver uses to track the relationship between bios and packets more flexible and detached, so that they can be passed to an "aoe_ktio" thread for completion of I/O. The frames are handled much like skbs, with a capped amount of preallocation so that real-world use cases are likely to run smoothly and degenerate gracefully even under memory pressure. Decoupling I/O completion from the receive path and serializing it in a process makes it easier to think about the correctness of the locking in the driver, especially in the case of a remote MAC address becoming unusable. [dan.carpenter@oracle.com: cleanup an allocation a bit] Signed-off-by: Ed Cashin Signed-off-by: Dan Carpenter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

aoe: Use SKB interfaces for list management instead of home-grown stuff.

2008-09-22T05:36:49Z

Signed-off-by: David S. Miller

aoe: update copyright date

2008-02-08T17:22:32Z

Update the year in the copyright notices. Signed-off-by: Ed L. Cashin Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds