From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-173.mta1.migadu.com (out-173.mta1.migadu.com [95.215.58.173]) (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 1658440F74A for ; Wed, 22 Jul 2026 10:24:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784715871; cv=none; b=BHvW7QbEewKkL2r6LSEzbGPgv6fbGJvxmswKKDNFp3aVknY/USp0RNP6XItY3yAbrRKLV2PmaxVM8BAg2k/8McPWSFXuFd/+niFDrj7KHMGgnaUDWSZJJF/1Uhyi7gvEH7I5CTeo7WP4UTXBiHIqZlviz2ll0wQ350j6ffUtm4Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784715871; c=relaxed/simple; bh=T+zQGJYQw12hzXXrOCLj5B7/XnNgsd7lzkzMvgw7sus=; h=From:To:Cc:Subject:Date:Message-Id; b=IRtNdhbVqeO99nK/ESHcjmdShXlTZJUjiMMKufIFVJib3TYb11/+tLlM3crhfoDDFqWPTPkI2D1mC96kaiDBFRlNtCAA4/C/aKKrlNgbSr2Xc3j6PpHQbRber2VpRqxposWko4f4SY2/349O368XGHK5jWPHwMxu+8WTbFMFdYs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=q1N0H6+i; arc=none smtp.client-ip=95.215.58.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="q1N0H6+i" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1784715858; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc; bh=iKDHSFqXKxd8yDlZ5/9RklFB/SZyB73W9ZH1EPghICk=; b=q1N0H6+iIilHT5Y1ZzQD0DhhOZXYZ2DMGhIXmrQUlfZvBt5VT8GF6osKjyRKBqHzwKNjmR a+vsEJiqtCS0SzENh3LdGlpDcf/+TWgIX4xj+rIe3xIBSvGRe8fohF4zuHTKsVWQqObYS9 8m+pLlurnqvoqhk4+IwgUv5tzUvio98= From: Zqiang To: paulmck@kernel.org, frederic@kernel.org, neeraj.upadhyay@kernel.org, joelagnelf@nvidia.com, urezki@gmail.com, boqun@kernel.org Cc: qiang.zhang@linux.dev, rcu@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] rcu: Remove unused rdp parameter from rcu_check_gp_start_stall() Date: Wed, 22 Jul 2026 18:23:47 +0800 Message-Id: <20260722102347.6194-1-qiang.zhang@linux.dev> X-Migadu-Flow: FLOW_OUT Precedence: bulk X-Mailing-List: rcu@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The rcu_check_gp_start_stall() works entirely on rnp parameter, and never uses it's rdp parameter. this commit therefore drop it, updating both callers and the declaration. No functional change. Signed-off-by: Zqiang --- kernel/rcu/tree.c | 2 +- kernel/rcu/tree.h | 3 +-- kernel/rcu/tree_stall.h | 5 ++--- 3 files changed, 4 insertions(+), 6 deletions(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 27104edace0b..4bb7e9ca5ab7 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -2911,7 +2911,7 @@ static __latent_entropy void rcu_core(void) rcu_accelerate_cbs_unlocked(rnp, rdp); } - rcu_check_gp_start_stall(rnp, rdp, rcu_jiffies_till_stall_check()); + rcu_check_gp_start_stall(rnp, rcu_jiffies_till_stall_check()); /* If there are callbacks ready, invoke them. */ if (!rcu_rdp_is_offloaded(rdp) && rcu_segcblist_ready_cbs(&rdp->cblist) && diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index 9b85eeaa0071..eedfa43059e8 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -545,8 +545,7 @@ static bool rcu_nohz_full_cpu(void); static void record_gp_stall_check_time(void); static void rcu_iw_handler(struct irq_work *iwp); static void check_cpu_stall(struct rcu_data *rdp); -static void rcu_check_gp_start_stall(struct rcu_node *rnp, struct rcu_data *rdp, - const unsigned long gpssdelay); +static void rcu_check_gp_start_stall(struct rcu_node *rnp, const unsigned long gpssdelay); /* Forward declarations for tree_exp.h. */ static void sync_rcu_do_polled_gp(struct work_struct *wp); diff --git a/kernel/rcu/tree_stall.h b/kernel/rcu/tree_stall.h index 45b9856ccd2b..02684dadb4ee 100644 --- a/kernel/rcu/tree_stall.h +++ b/kernel/rcu/tree_stall.h @@ -998,8 +998,7 @@ EXPORT_SYMBOL_GPL(show_rcu_gp_kthreads); * This function checks for grace-period requests that fail to motivate * RCU to come out of its idle mode. */ -static void rcu_check_gp_start_stall(struct rcu_node *rnp, struct rcu_data *rdp, - const unsigned long gpssdelay) +static void rcu_check_gp_start_stall(struct rcu_node *rnp, const unsigned long gpssdelay) { unsigned long flags; unsigned long j; @@ -1074,7 +1073,7 @@ void rcu_fwd_progress_check(unsigned long j) __func__, jiffies - data_race(READ_ONCE(rcu_state.gp_end))); preempt_disable(); rdp = this_cpu_ptr(&rcu_data); - rcu_check_gp_start_stall(rdp->mynode, rdp, j); + rcu_check_gp_start_stall(rdp->mynode, j); preempt_enable(); } for_each_possible_cpu(cpu) { -- 2.17.1