linux-kernel - [PATCH] cfg80211: Remove unused tracepoints

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20250828221759.131160ee@batman.local.home>
Date: Thu, 28 Aug 2025 22:17:59 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: LKML <linux-kernel@...r.kernel.org>, Linux trace kernel
 <linux-trace-kernel@...r.kernel.org>, linux-wireless@...r.kernel.org
Cc: Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, Johannes Berg <johannes@...solutions.net>
Subject: [PATCH] cfg80211: Remove unused tracepoints

From: Steven Rostedt <rostedt@...dmis.org>

Tracepoints that are defined take up around 5K each, even if they are not
used. If they are defined and not used, then they waste memory for unused
code. Soon unused tracepoints will cause warnings.

Remove the unused tracepoints of the cfg80211 subsystem. They are:

cfg80211_chandef_dfs_required
cfg80211_return_u32
cfg80211_return_uint
cfg80211_send_rx_auth

Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
 net/wireless/trace.h | 56 --------------------------------------------
 1 file changed, 56 deletions(-)

diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 34c584a215e5..9b6074155d59 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -3137,23 +3137,6 @@ DEFINE_EVENT(cfg80211_netdev_mac_evt, cfg80211_notify_new_peer_candidate,
 	TP_ARGS(netdev, macaddr)
 );
 
-DECLARE_EVENT_CLASS(netdev_evt_only,
-	TP_PROTO(struct net_device *netdev),
-	TP_ARGS(netdev),
-	TP_STRUCT__entry(
-		NETDEV_ENTRY
-	),
-	TP_fast_assign(
-		NETDEV_ASSIGN;
-	),
-	TP_printk(NETDEV_PR_FMT , NETDEV_PR_ARG)
-);
-
-DEFINE_EVENT(netdev_evt_only, cfg80211_send_rx_auth,
-	TP_PROTO(struct net_device *netdev),
-	TP_ARGS(netdev)
-);
-
 TRACE_EVENT(cfg80211_send_rx_assoc,
 	TP_PROTO(struct net_device *netdev,
 		 const struct cfg80211_rx_assoc_resp_data *data),
@@ -3480,21 +3463,6 @@ TRACE_EVENT(cfg80211_reg_can_beacon,
 		  __entry->prohibited_flags, __entry->permitting_flags)
 );
 
-TRACE_EVENT(cfg80211_chandef_dfs_required,
-	TP_PROTO(struct wiphy *wiphy, struct cfg80211_chan_def *chandef),
-	TP_ARGS(wiphy, chandef),
-	TP_STRUCT__entry(
-		WIPHY_ENTRY
-		CHAN_DEF_ENTRY
-	),
-	TP_fast_assign(
-		WIPHY_ASSIGN;
-		CHAN_DEF_ASSIGN(chandef);
-	),
-	TP_printk(WIPHY_PR_FMT ", " CHAN_DEF_PR_FMT,
-		  WIPHY_PR_ARG, CHAN_DEF_PR_ARG)
-);
-
 TRACE_EVENT(cfg80211_ch_switch_notify,
 	TP_PROTO(struct net_device *netdev,
 		 struct cfg80211_chan_def *chandef,
@@ -3862,30 +3830,6 @@ DEFINE_EVENT(cfg80211_bss_evt, cfg80211_return_bss,
 	TP_ARGS(pub)
 );
 
-TRACE_EVENT(cfg80211_return_uint,
-	TP_PROTO(unsigned int ret),
-	TP_ARGS(ret),
-	TP_STRUCT__entry(
-		__field(unsigned int, ret)
-	),
-	TP_fast_assign(
-		__entry->ret = ret;
-	),
-	TP_printk("ret: %d", __entry->ret)
-);
-
-TRACE_EVENT(cfg80211_return_u32,
-	TP_PROTO(u32 ret),
-	TP_ARGS(ret),
-	TP_STRUCT__entry(
-		__field(u32, ret)
-	),
-	TP_fast_assign(
-		__entry->ret = ret;
-	),
-	TP_printk("ret: %u", __entry->ret)
-);
-
 TRACE_EVENT(cfg80211_report_wowlan_wakeup,
 	TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev,
 		 struct cfg80211_wowlan_wakeup *wakeup),
-- 
2.50.1