From nobody Wed Nov 27 07:46:15 2024 Received: from mail3-relais-sop.national.inria.fr (mail3-relais-sop.national.inria.fr [192.134.164.104]) (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 5B06A3E499; Sun, 13 Oct 2024 20:18:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.134.164.104 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728850688; cv=none; b=FselFT3JHsJ8hvvYJJCuyhckJjC77mS+nLxJdPZALFhJmg+x2k8YQl2YkRKK3k9bKCx0laWoPC7u9vhH4C3Ftpgd/Vyq3YDdpZ4XGDraHALROFmwE1GC7Qa+OzV5NoMa5CfT2jFkMpeNwstaA9566w5gSmGH5hHG7NEjeak/RWU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728850688; c=relaxed/simple; bh=UNde1Ns/wgw684Xp1FDQfaVu7Kt0BWagRFH8YHbgeu4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=suBIqJEhm3KvJKmJs+cxPf09O0ji2d0ck3cn3AccJY9tmC+MP+zUKh5qvwk6Bgn8nL9GYMHFfHbGCjR00oJGO9/GXCo/gb6RRYbCHaTCSaoExyfCZxJ6r6oJOLdCPV4Qq5T1DVPjHQfmXvoYka3CqyUxGtVK+kYfdxqtdm9x+XY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=inria.fr; spf=pass smtp.mailfrom=inria.fr; dkim=pass (1024-bit key) header.d=inria.fr header.i=@inria.fr header.b=FMhEhdep; arc=none smtp.client-ip=192.134.164.104 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=inria.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=inria.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=inria.fr header.i=@inria.fr header.b="FMhEhdep" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=inria.fr; s=dc; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=f56yuDs1RrZPsFGiT1se8rmNN2beKZ0tdUTQFaCxX9o=; b=FMhEhdepWYT8ih5/hSuqLaee7V7T+XkNGs9UTGtrrNUAmIJeaMSNNdA6 jkee02w8FZsJgZeHUHjYvPdtRzaIirUNA0GWhFKsVlqDMCzC9jB5YZdrv KAouigWnAJYA9EecdQ3cK883AOyYBDj5kT/olPhh87wybJip8LzaUOzK2 M=; Authentication-Results: mail3-relais-sop.national.inria.fr; dkim=none (message not signed) header.i=none; spf=SoftFail smtp.mailfrom=Julia.Lawall@inria.fr; dmarc=fail (p=none dis=none) d=inria.fr X-IronPort-AV: E=Sophos;i="6.11,201,1725314400"; d="scan'208";a="98968276" Received: from i80.paris.inria.fr (HELO i80.paris.inria.fr.) ([128.93.90.48]) by mail3-relais-sop.national.inria.fr with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2024 22:17:58 +0200 From: Julia Lawall To: "Jason A. Donenfeld" Cc: kernel-janitors@vger.kernel.org, vbabka@suse.cz, paulmck@kernel.org, "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , wireguard@lists.zx2c4.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 01/17] wireguard: allowedips: replace call_rcu by kfree_rcu for simple kmem_cache_free callback Date: Sun, 13 Oct 2024 22:16:48 +0200 Message-Id: <20241013201704.49576-2-Julia.Lawall@inria.fr> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20241013201704.49576-1-Julia.Lawall@inria.fr> References: <20241013201704.49576-1-Julia.Lawall@inria.fr> 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" Since SLOB was removed and since commit 6c6c47b063b5 ("mm, slab: call kvfree_rcu_barrier() from kmem_cache_d= estroy()"), it is not necessary to use call_rcu when the callback only performs kmem_cache_free. Use kfree_rcu() directly. The changes were made using Coccinelle. Signed-off-by: Julia Lawall Reviewed-by: Uladzislau Rezki (Sony) --- drivers/net/wireguard/allowedips.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireguard/allowedips.c b/drivers/net/wireguard/all= owedips.c index 4b8528206cc8..175b1ca4f66f 100644 --- a/drivers/net/wireguard/allowedips.c +++ b/drivers/net/wireguard/allowedips.c @@ -48,11 +48,6 @@ static void push_rcu(struct allowedips_node **stack, } } =20 -static void node_free_rcu(struct rcu_head *rcu) -{ - kmem_cache_free(node_cache, container_of(rcu, struct allowedips_node, rcu= )); -} - static void root_free_rcu(struct rcu_head *rcu) { struct allowedips_node *node, *stack[MAX_ALLOWEDIPS_DEPTH] =3D { @@ -330,13 +325,13 @@ void wg_allowedips_remove_by_peer(struct allowedips *= table, child =3D rcu_dereference_protected( parent->bit[!(node->parent_bit_packed & 1)], lockdep_is_held(lock)); - call_rcu(&node->rcu, node_free_rcu); + kfree_rcu(node, rcu); if (!free_parent) continue; if (child) child->parent_bit_packed =3D parent->parent_bit_packed; *(struct allowedips_node **)(parent->parent_bit_packed & ~3UL) =3D child; - call_rcu(&parent->rcu, node_free_rcu); + kfree_rcu(parent, rcu); } }