From nobody Thu Dec 18 18:02:09 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C005AC54E76 for ; Mon, 20 Nov 2023 10:56:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233378AbjKTK4r (ORCPT ); Mon, 20 Nov 2023 05:56:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39210 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233115AbjKTK43 (ORCPT ); Mon, 20 Nov 2023 05:56:29 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3680BD4C for ; Mon, 20 Nov 2023 02:56:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1700477776; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Fh5nWCS7m0i97fxRSND8fdK+nCY+MD6Me1hw+2UF/3c=; b=aL2R4ferCNTSW0/DM4wCLENT5BUyJ7WVaXa3M6x0ATKoxDUAXKkstGMplnZxLz1uyYE/FR xCCUnWiZdKVQqHQ8YL+9E/4f/M0K8jLsrYPQNiOrcOUKRJkFJvb99eKNc6xdMnhWmhePS1 58GVkehSPcacpMI+EvsbA2Qj0ZvHtfw= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-88-Q63KOD7EPAGRzHG2NpasBw-1; Mon, 20 Nov 2023 05:56:12 -0500 X-MC-Unique: Q63KOD7EPAGRzHG2NpasBw-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 7DB26811003; Mon, 20 Nov 2023 10:56:11 +0000 (UTC) Received: from vschneid-thinkpadt14sgen2i.remote.csb (unknown [10.39.195.45]) by smtp.corp.redhat.com (Postfix) with ESMTPS id BAC3C2026D4C; Mon, 20 Nov 2023 10:56:06 +0000 (UTC) From: Valentin Schneider To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-arch@vger.kernel.org, x86@kernel.org Cc: Thomas Gleixner , Borislav Petkov , Peter Zijlstra , Josh Poimboeuf , Pawan Gupta , Ingo Molnar , Dave Hansen , "H. Peter Anvin" , Paolo Bonzini , Wanpeng Li , Vitaly Kuznetsov , Arnd Bergmann , Jason Baron , Steven Rostedt , Ard Biesheuvel , Frederic Weisbecker , "Paul E. McKenney" , Feng Tang , Andrew Morton , "Mike Rapoport (IBM)" , Vlastimil Babka , David Hildenbrand , "ndesaulniers@google.com" , Michael Kelley , "Masami Hiramatsu (Google)" Subject: [PATCH 5/5] x86/tsc: Make __use_tsc __ro_after_init Date: Mon, 20 Nov 2023 11:55:28 +0100 Message-ID: <20231120105528.760306-6-vschneid@redhat.com> In-Reply-To: <20231120105528.760306-1-vschneid@redhat.com> References: <20231120105528.760306-1-vschneid@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.4 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" __use_tsc is only ever enabled in __init tsc_enable_sched_clock(), so mark it as __ro_after_init. Signed-off-by: Valentin Schneider --- arch/x86/kernel/tsc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 15f97c0abc9d0..f19b42ea40573 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -44,7 +44,7 @@ EXPORT_SYMBOL(tsc_khz); static int __read_mostly tsc_unstable; static unsigned int __initdata tsc_early_khz; =20 -static DEFINE_STATIC_KEY_FALSE(__use_tsc); +static DEFINE_STATIC_KEY_FALSE_RO(__use_tsc); =20 int tsc_clocksource_reliable; =20 --=20 2.41.0