linux-kernel - RE: [PATCH v2 1/3] wifi: iwlwifi: replace use of system_unbound_wq with system_dfl

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Message-ID: <DM3PPF63A6024A997DE452C005FBF60E124A365A@DM3PPF63A6024A9.namprd11.prod.outlook.com>
Date: Mon, 9 Feb 2026 08:01:09 +0000
From: "Korenblit, Miriam Rachel" <miriam.rachel.korenblit@...el.com>
To: Marco Crivellari <marco.crivellari@...e.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
CC: Tejun Heo <tj@...nel.org>, Lai Jiangshan <jiangshanlai@...il.com>,
	Frederic Weisbecker <frederic@...nel.org>, Sebastian Andrzej Siewior
	<bigeasy@...utronix.de>, Michal Hocko <mhocko@...e.com>, Johannes Berg
	<johannes@...solutions.net>
Subject: RE: [PATCH v2 1/3] wifi: iwlwifi: replace use of system_unbound_wq
 with system_dfl_wq



> -----Original Message-----
> From: Marco Crivellari <marco.crivellari@...e.com>
> Sent: Thursday, November 20, 2025 12:09 PM
> To: linux-kernel@...r.kernel.org; linux-wireless@...r.kernel.org
> Cc: Tejun Heo <tj@...nel.org>; Lai Jiangshan <jiangshanlai@...il.com>; Frederic
> Weisbecker <frederic@...nel.org>; Sebastian Andrzej Siewior
> <bigeasy@...utronix.de>; Marco Crivellari <marco.crivellari@...e.com>; Michal
> Hocko <mhocko@...e.com>; Korenblit, Miriam Rachel
> <miriam.rachel.korenblit@...el.com>; Johannes Berg
> <johannes@...solutions.net>
> Subject: [PATCH v2 1/3] wifi: iwlwifi: replace use of system_unbound_wq with
> system_dfl_wq
> 
> This patch continues the effort to refactor workqueue APIs, which has begun with
> the changes introducing new workqueues and a new alloc_workqueue flag:
> 
>    commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and
> system_dfl_wq")
>    commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag")
> 
> The point of the refactoring is to eventually alter the default behavior of
> workqueues to become unbound by default so that their workload placement is
> optimized by the scheduler.
> 
> Before that to happen after a careful review and conversion of each individual
> case, workqueue users must be converted to the better named new workqueues
> with no intended behaviour changes:
> 
>    system_wq -> system_percpu_wq
>    system_unbound_wq -> system_dfl_wq
> 
> This way the old obsolete workqueues (system_wq, system_unbound_wq) can be
> removed in the future.
> 
> Suggested-by: Tejun Heo <tj@...nel.org>
> Signed-off-by: Marco Crivellari <marco.crivellari@...e.com>
> ---
>  drivers/net/wireless/intel/iwlwifi/iwl-trans.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
> b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
> index a0cc5d7745e8..7e84074e1a3c 100644
> --- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
> +++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
> @@ -1092,7 +1092,7 @@ static inline void iwl_trans_schedule_reset(struct
> iwl_trans *trans,
>  	 */
>  	trans->restart.during_reset = test_bit(STATUS_IN_SW_RESET,
>  					       &trans->status);
> -	queue_delayed_work(system_unbound_wq, &trans->restart.wk, 0);
> +	queue_delayed_work(system_dfl_wq, &trans->restart.wk, 0);
>  }
> 
>  static inline void iwl_trans_fw_error(struct iwl_trans *trans,
> --
> 2.51.1
Acked-by: Miri Korenblit <miriam.rachel.korenblit@...el.com>