linux-kernel - Re: [for-next][PATCH 4/4] cfg80211: Remove unused tracepoints

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Message-ID: <1a4ee34782868893a237ba70e518dca17147f013.camel@sipsolutions.net>
Date: Wed, 01 Oct 2025 16:49:29 +0200
From: Johannes Berg <johannes@...solutions.net>
To: Steven Rostedt <rostedt@...nel.org>, linux-kernel@...r.kernel.org
Cc: Masami Hiramatsu <mhiramat@...nel.org>, Mark Rutland
 <mark.rutland@....com>,  Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [for-next][PATCH 4/4] cfg80211: Remove unused tracepoints

On Wed, 2025-10-01 at 10:46 -0400, Steven Rostedt wrote:
> 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

This is in net-next [1], should go to Linus's tree whenever that is
pulled [2].

[1] https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=58febb47b961a91d0d12ee0c1618a7843c0908ce

[2] https://lore.kernel.org/lkml/20251001131156.27805-1-pabeni@redhat.com/

johannes