From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta0.migadu.com (out-82.mta0.migadu.com [91.218.175.82]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D50283B9DAB for ; Mon, 14 Sep 2026 19:14:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.82 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789413247; cv=none; b=F05P6H0Mlqr8O+IOBTspXbNrFw6De4E8PGYABGn2hMZKoiKNLimnJVtaTcgyPFCQricZZstbp19KWa6paA5UNmsVAY+hApGqHSQpbSTDckVNMQNS/p3O/JNZQyr0eRb03209ZaJS8+3v9324N1ziIEksUxA7b2ieluoDBZ6XmVQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789413247; c=relaxed/simple; bh=eTbZ0dyiDFT16Alt0dAIvaliqkaJj1LNEmU2jMelxIc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=juAOe55j8Wa2c1Gf52sIL9/fayjE/1ocRWd5iATtUzqjdjZe+/hfRn3Zu4ww+XqV8ZMypKRZTjUEKJkmAxhQkoydE598B+Hddu7hX+FHdQw9M0mGHKxprheGWWdA7/y8g2p6n+TpzpLogG7WK51M2NsYBqLnlbyTQAJX2GCMuv4= 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=BCovMbmy; arc=none smtp.client-ip=91.218.175.82 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="BCovMbmy" X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=eTbZ0dyiDFT16Alt0dAIvaliqkaJj1LNEmU2jMelxIc=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1789413240; v=1; x=1790018040; b=BCovMbmyPrNqc6gHI2f5W1ngdPia/9aFsDW5ZkgCqv1rkSRI/sWx8ssAx+Gf1HusgsW2QCw5 41Xv0FCca8WPv69XVVH7GD/Z9V58X6XDbvIWlNv5XWVGZIbQkfRPiAl4QLASbWAqoMu5w+tQ1OW yU5GI2Eyw6qzm34uj6c76H1w= X-Envelope-To: linux-kernel@vger.kernel.org Received: by mta10.migadu.com with ESMTPS id 0d17df70ff850e5e; Mon, 14 Sep 2026 19:14:00 +0000 X-Mizu-Trace-ID: 0d17df70ff850e5e X-Migadu-Flow: FLOW_OUT From: wen.yang@linux.dev To: Gabriele Monaco Cc: Nam Cao , linux-trace-kernel@vger.kernel.org, linux-kernel@vger.kernel.org, Wen Yang Subject: [PATCH v6 3/4] rv/reactors: export rv_register_reactor() and rv_unregister_reactor() Date: Tue, 15 Sep 2026 03:13:36 +0800 Message-Id: <94b7ec120a92b9368541ac050601e66be8fe653a.1789412799.git.wen.yang@linux.dev> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Wen Yang rv_react() is exported to modules, but the reactor registration helpers are not. Export them with EXPORT_SYMBOL_GPL() so reactor modules and the tristate KUnit test module can register and unregister reactors without hitting undefined symbol errors at link time(modpost). Commit 3d3800b4f7f4 ("rv: Remove reactor's reference counter") noted that module-based reactors, if supported, should be pinned with try_module_get()/module_put() to prevent unloading under an active monitor. This patch does not add that support. The only in-tree module consumer, the tristate KUnit reactor test module, registers and unregisters its reactor within a controlled test lifecycle. The actual pinning is left to a follow-up series that adds support for loadable-module reactors. Reviewed-by: Gabriele Monaco Signed-off-by: Wen Yang --- kernel/trace/rv/rv_reactors.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/trace/rv/rv_reactors.c b/kernel/trace/rv/rv_reactors.c index ff7d478227c3..8e57a95d446b 100644 --- a/kernel/trace/rv/rv_reactors.c +++ b/kernel/trace/rv/rv_reactors.c @@ -314,6 +314,7 @@ int rv_register_reactor(struct rv_reactor *reactor) guard(mutex)(&rv_interface_lock); return __rv_register_reactor(reactor); } +EXPORT_SYMBOL_GPL(rv_register_reactor); /** * rv_unregister_reactor - unregister a rv reactor. @@ -327,6 +328,7 @@ int rv_unregister_reactor(struct rv_reactor *reactor) list_del(&reactor->list); return 0; } +EXPORT_SYMBOL_GPL(rv_unregister_reactor); /* * reacting_on interface. -- 2.25.1