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

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Message-ID: <20251114103757.111652-4-marco.crivellari@suse.com>
Date: Fri, 14 Nov 2025 11:37:57 +0100
From: Marco Crivellari <marco.crivellari@...e.com>
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>,
	Miri Korenblit <miriam.rachel.korenblit@...el.com>
Subject: [PATCH 3/3] wifi: iwlwifi: nvm: replace use of system_unbound_wq with system_dfl_wq

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.

system_unbound_wq should be the default workqueue so as not to enforce
locality constraints for random work whenever it's not required.

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")

Switch to using system_dfl_wq because system_unbound_wq is going away as
part of a workqueue restructuring.

Suggested-by: Tejun Heo <tj@...nel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@...e.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/tdls.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c b/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c
index 36379b738de1..0df31639fa5e 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c
@@ -234,7 +234,7 @@ void iwl_mvm_rx_tdls_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
 	 * Also convert TU to msec.
 	 */
 	delay = TU_TO_MS(vif->bss_conf.dtim_period * vif->bss_conf.beacon_int);
-	mod_delayed_work(system_wq, &mvm->tdls_cs.dwork,
+	mod_delayed_work(system_percpu_wq, &mvm->tdls_cs.dwork,
 			 msecs_to_jiffies(delay));
 
 	iwl_mvm_tdls_update_cs_state(mvm, IWL_MVM_TDLS_SW_ACTIVE);
@@ -548,7 +548,7 @@ iwl_mvm_tdls_channel_switch(struct ieee80211_hw *hw,
 	 */
 	delay = 2 * TU_TO_MS(vif->bss_conf.dtim_period *
 			     vif->bss_conf.beacon_int);
-	mod_delayed_work(system_wq, &mvm->tdls_cs.dwork,
+	mod_delayed_work(system_percpu_wq, &mvm->tdls_cs.dwork,
 			 msecs_to_jiffies(delay));
 	return 0;
 }
@@ -659,6 +659,6 @@ iwl_mvm_tdls_recv_channel_switch(struct ieee80211_hw *hw,
 	/* register a timeout in case we don't succeed in switching */
 	delay = vif->bss_conf.dtim_period * vif->bss_conf.beacon_int *
 		1024 / 1000;
-	mod_delayed_work(system_wq, &mvm->tdls_cs.dwork,
+	mod_delayed_work(system_percpu_wq, &mvm->tdls_cs.dwork,
 			 msecs_to_jiffies(delay));
 }
-- 
2.51.1