From nobody Thu Oct 2 03:28:38 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8B2B921B9CD; Tue, 23 Sep 2025 14:21:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758637302; cv=none; b=c53iYkyfVQIB9swAlS9UnDL8wZOV3o7TjKeMSCstUCy+0hHDcWcG6+5h85zPKao2aezm9/upktXVufo5bFtw973Lv8GZRhb9qz+0qfHuvrsjWD+MaGU7lQlm0cDYR++vZzgajbH5YXpO1AH2MPaywKe5Njwd93XBJtvu8ZSBwvM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758637302; c=relaxed/simple; bh=XNmsZMoAIYYD/q9UvCMskFAVtHocTahtlj2a9AJbvFU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ByV1J3V3u3zqJFZnqCQ+UPNYJ9G8nmNUwlO2rhh/9yzxT2R/6p29RWO5RjI6EcsDcI1uQDfV+SgzYnYX59F0wxLRsxQVGKR6+HFa5cGyL75MH3WPPb2PADk5rTZH2WErGX0vWOufjU/ohLF9JaAT7W3blMF8r/z/9BfFyQLC9j8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RXkTPm51; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RXkTPm51" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AC177C113D0; Tue, 23 Sep 2025 14:21:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758637302; bh=XNmsZMoAIYYD/q9UvCMskFAVtHocTahtlj2a9AJbvFU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RXkTPm51Q0u1KO26bxn9O6W+5DJZubvIwqRQ81/rkxtkRS+yDPKVm6MNJOZMRSjkQ DJ1yUtBNMjAMADSTaeqC4uLQGfvUrI4N+dxKSODKGAP/1bwn1hlVhBbVohMfZxb4Cs 6dSfaZeVhZCLC3ByJiGz7AmwyhNtAkWfalQiV4Dl7tD6sDLh8sVUJjQw/eBD9wylOJ kuP+hkoXPkgSltxQo0SqGziXOs2NEUwXmduLuzM6TxLr4znjf9SdeuqT2y5sNsVGv2 lj2aAQFWHuqBjovwJpajFzWG7ZX1vZNO0qaOS1iXt01AFGcxQRzN0MOGbzvchEnrdo CJNevCpDCrOZA== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id D1F50CE1389; Tue, 23 Sep 2025 07:20:37 -0700 (PDT) From: "Paul E. McKenney" To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com, rostedt@goodmis.org, "Paul E. McKenney" , Andrii Nakryiko , Alexei Starovoitov , Peter Zijlstra , bpf@vger.kernel.org Subject: [PATCH 11/34] rcu: Remove now-empty rcu_tasks_trace_get_gp_data() function Date: Tue, 23 Sep 2025 07:20:13 -0700 Message-Id: <20250923142036.112290-11-paulmck@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <580ea2de-799a-4ddc-bde9-c16f3fb1e6e7@paulmck-laptop> References: <580ea2de-799a-4ddc-bde9-c16f3fb1e6e7@paulmck-laptop> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The rcu_tasks_trace_get_gp_data() is used by rcutorture to diagnose bugs involving the RCU Tasks Trace grace-period kthread, which now no longer exists. This commit therefore removes this function. Signed-off-by: Paul E. McKenney Cc: Andrii Nakryiko Cc: Alexei Starovoitov Cc: Peter Zijlstra Cc: --- include/linux/rcupdate_trace.h | 1 - kernel/rcu/rcu.h | 4 ---- kernel/rcu/rcutorture.c | 1 - kernel/rcu/tasks.h | 5 ----- 4 files changed, 11 deletions(-) diff --git a/include/linux/rcupdate_trace.h b/include/linux/rcupdate_trace.h index 3f46cbe6700038..ffd4dcd6339ae4 100644 --- a/include/linux/rcupdate_trace.h +++ b/include/linux/rcupdate_trace.h @@ -136,7 +136,6 @@ static inline void rcu_barrier_tasks_trace(void) } =20 // Placeholders to enable stepwise transition. -void rcu_tasks_trace_get_gp_data(int *flags, unsigned long *gp_seq); void __init rcu_tasks_trace_suppress_unused(void); struct task_struct *get_rcu_tasks_trace_gp_kthread(void); =20 diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h index b397572b4a5331..dc5d614b372c1e 100644 --- a/kernel/rcu/rcu.h +++ b/kernel/rcu/rcu.h @@ -544,10 +544,6 @@ struct task_struct *get_rcu_tasks_rude_gp_kthread(void= ); void rcu_tasks_rude_get_gp_data(int *flags, unsigned long *gp_seq); #endif // # ifdef CONFIG_TASKS_RUDE_RCU =20 -#ifdef CONFIG_TASKS_TRACE_RCU -void rcu_tasks_trace_get_gp_data(int *flags, unsigned long *gp_seq); -#endif - #ifdef CONFIG_TASKS_RCU_GENERIC void tasks_cblist_init_generic(void); #else /* #ifdef CONFIG_TASKS_RCU_GENERIC */ diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 5120e1ce811413..485fa822b6a753 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1130,7 +1130,6 @@ static struct rcu_torture_ops tasks_tracing_ops =3D { .exp_sync =3D synchronize_rcu_tasks_trace, .call =3D call_rcu_tasks_trace, .cb_barrier =3D rcu_barrier_tasks_trace, - .get_gp_data =3D rcu_tasks_trace_get_gp_data, .cbflood_max =3D 50000, .irq_capable =3D 1, .slow_gps =3D 1, diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h index 6e2530fe23e620..7a8c1fd9addb7a 100644 --- a/kernel/rcu/tasks.h +++ b/kernel/rcu/tasks.h @@ -1480,11 +1480,6 @@ struct task_struct *get_rcu_tasks_trace_gp_kthread(v= oid) } EXPORT_SYMBOL_GPL(get_rcu_tasks_trace_gp_kthread); =20 -void rcu_tasks_trace_get_gp_data(int *flags, unsigned long *gp_seq) -{ -} -EXPORT_SYMBOL_GPL(rcu_tasks_trace_get_gp_data); - #endif /* #else #ifdef CONFIG_TASKS_TRACE_RCU */ =20 #ifndef CONFIG_TINY_RCU --=20 2.40.1