From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6F11DCE7B1E for ; Fri, 14 Nov 2025 15:06:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=rr6xJ3c+EJv9VO46QEF+ZoB4rWgfcJmzisR3J3XhXsY=; b=T2d+j1eDtTIguWjH5hQh5d5pdl 5cc4lAaAezL7WQ57Jb44R0iSVaQ/fUyaq2wJsOfC0kOb1WvzOkZsAYVwMVlBP8sFDGfygNMb2Vhzl OnZsU8taLETOsEDejGkwchPMBuE1BiNpQq1hL1kQkSsQjhTrPUrGvVIN8vPqlUS27//VOWVjGmQlV CzCyvmQ3TocqhMhe5ExYfMouw29aFxKcJ3KE6NnK/Px+gvBbB1pEVF6o8ughJTyaFD1GfUYcfApPM 5DWnVvv26GWQgVCa8faZLB5NovsgDeXr2IF3BP+7IAOe6HzSrZ7bkhmCz+7rOKtHtuVbUNsRf8MSI uOyBDhpw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vJvNE-0000000CRld-1ltu; Fri, 14 Nov 2025 15:06:04 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vJvNC-0000000CRkS-3BSs for linux-arm-kernel@bombadil.infradead.org; Fri, 14 Nov 2025 15:06:02 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=rr6xJ3c+EJv9VO46QEF+ZoB4rWgfcJmzisR3J3XhXsY=; b=aObYywG5DV9GcY4LDy6Y+w+8l1 9QHvOfweA0S8osS3Vuu14ymoELQ/ZZeCsqZBa9eGToTIONYltqy6gI4oWcJcAIbj3JmPmRjqDvCTl Hb/yUYBemmuonbpX/hOl6nLWw2kCXLUqn+X0u1x5BFnUh+rBmYxuGKe4B+kIk0uQ0uLRrmoYf+BAS O4OwnJsVNHsAdUesI/z1nkGAYPGSA+BuPfWxphmcFrBd3nS/bL5m/fZv9nqay5WWL7FyLsrKwfvLE 3ARKLOLieedcDPTZimeRR4W3Oa9mFuhNp6Mi0OivGxW5By3yg/z6krCiH+itctL0gV86sV8AKmj/0 nhB8aMGQ==; Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by desiato.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vJuVT-00000002lPV-45dw for linux-arm-kernel@lists.infradead.org; Fri, 14 Nov 2025 14:10:33 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1763132757; 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=rr6xJ3c+EJv9VO46QEF+ZoB4rWgfcJmzisR3J3XhXsY=; b=Uip/GnDItB0osHAB9Uo5QtEAKC7/kCFo0ptFScsl/6QIOmYh/NRHRT3OJwlvtuVpf2Zy2f rPMMlpGwsZczB9XZjeGfinRElaQfpzR161c5qwxKFzEYD+6BF7txi7c+mI2QaWZ0P2nvuR eQuwOMIgfnfFO+HG7sy0MCt7XHYcb1I= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1763132757; 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=rr6xJ3c+EJv9VO46QEF+ZoB4rWgfcJmzisR3J3XhXsY=; b=Uip/GnDItB0osHAB9Uo5QtEAKC7/kCFo0ptFScsl/6QIOmYh/NRHRT3OJwlvtuVpf2Zy2f rPMMlpGwsZczB9XZjeGfinRElaQfpzR161c5qwxKFzEYD+6BF7txi7c+mI2QaWZ0P2nvuR eQuwOMIgfnfFO+HG7sy0MCt7XHYcb1I= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-85-1COJ1lZ0NXqsZtNAsefjiw-1; Fri, 14 Nov 2025 10:05:52 -0500 X-MC-Unique: 1COJ1lZ0NXqsZtNAsefjiw-1 X-Mimecast-MFC-AGG-ID: 1COJ1lZ0NXqsZtNAsefjiw_1763132744 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (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 mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 6C1A71800370; Fri, 14 Nov 2025 15:05:44 +0000 (UTC) Received: from vschneid-thinkpadt14sgen2i.remote.csb (unknown [10.45.226.10]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 1448B19560B9; Fri, 14 Nov 2025 15:05:30 +0000 (UTC) From: Valentin Schneider To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, rcu@vger.kernel.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org, linux-arch@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Josh Poimboeuf , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Andy Lutomirski , Peter Zijlstra , Arnaldo Carvalho de Melo , Paolo Bonzini , Arnd Bergmann , Frederic Weisbecker , "Paul E. McKenney" , Jason Baron , Steven Rostedt , Ard Biesheuvel , Sami Tolvanen , "David S. Miller" , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Uladzislau Rezki , Mathieu Desnoyers , Mel Gorman , Andrew Morton , Masahiro Yamada , Han Shen , Rik van Riel , Jann Horn , Dan Carpenter , Oleg Nesterov , Juri Lelli , Clark Williams , Yair Podemsky , Marcelo Tosatti , Daniel Wagner , Petr Tesarik , Shrikanth Hegde Subject: [PATCH v7 14/31] perf/x86/amd: Mark perf_lopwr_cb static call as __ro_after_init Date: Fri, 14 Nov 2025 16:01:16 +0100 Message-ID: <20251114150133.1056710-15-vschneid@redhat.com> In-Reply-To: <20251114150133.1056710-1-vschneid@redhat.com> References: <20251114150133.1056710-1-vschneid@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251114_141032_140875_340E46D9 X-CRM114-Status: GOOD ( 14.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Later commits will cause objtool to warn about static calls being used in .noinstr sections in order to safely defer instruction patching IPIs targeted at NOHZ_FULL CPUs. perf_lopwr_cb is used in .noinstr code, but is only ever updated in __init amd_brs_lopwr_init(), and can thus be marked as __ro_after_init. Reported-by: Josh Poimboeuf Signed-off-by: Valentin Schneider --- arch/x86/events/amd/brs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/events/amd/brs.c b/arch/x86/events/amd/brs.c index 06f35a6b58a5b..71d7ba774a063 100644 --- a/arch/x86/events/amd/brs.c +++ b/arch/x86/events/amd/brs.c @@ -423,7 +423,7 @@ void noinstr perf_amd_brs_lopwr_cb(bool lopwr_in) } } -DEFINE_STATIC_CALL_NULL(perf_lopwr_cb, perf_amd_brs_lopwr_cb); +DEFINE_STATIC_CALL_NULL_RO(perf_lopwr_cb, perf_amd_brs_lopwr_cb); EXPORT_STATIC_CALL_TRAMP_GPL(perf_lopwr_cb); void __init amd_brs_lopwr_init(void) -- 2.51.0