From nobody Fri Dec 19 14:01:14 2025 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 060F52FB997 for ; Fri, 10 Oct 2025 15:44:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760111074; cv=none; b=WSagLaCSUSOclAhoSJb4DmlmmMDIBtyxdVoAfGTI5kOT+SPBy90kSv8I1ny6mZPhHp3aJ34ETUFprzQuYLaxy9CGJVpMYe934p9rVG/JCopz46fkKLwzRCcs1ssAATYV1OTmT1h/8G1UXA8+FA2S87iBWpgHA5W5L/9EqyWZFZY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760111074; c=relaxed/simple; bh=NOP9Xcf5nJeQy8FdKMCOjsfGYThU7jsiFQxoXI2XDxA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=aG2INMneqFNCGXqD+9ok23vcni1VHCKJRpviYEf4ZdLiiobDrLB2SUzL5yBZFwic9NfUN7CktuPAOSiQ8oaUwYxuPGMo65A9dgFbGcxw5RLrxh3/duEYIlDSIvgMeXs7Z4M0HmtccCO24NO91GO8TtYtTPdbPTYlez9ZvNWS2jU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=iq8fHquV; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="iq8fHquV" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1760111072; 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=iq8fHquVC4fHvGcuuffqLFHVp1QNwAj0awL/KF0UxMPy81T1r8V5CHR8LIW3YRKo1oEli1 sg6VQvCB/KcXPi6vZEqRiukc3hhGq651NTSmzM0tYgBshW0+rUtpl1Jjs/SLiStVrwzjj7 7E8bMixJ2ZfUbnej68GkwxIQ/1Ep7Xo= 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-347-meY_oTX3Ni6d3twePwCogw-1; Fri, 10 Oct 2025 11:44:28 -0400 X-MC-Unique: meY_oTX3Ni6d3twePwCogw-1 X-Mimecast-MFC-AGG-ID: meY_oTX3Ni6d3twePwCogw_1760111064 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (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 313C31800357; Fri, 10 Oct 2025 15:44:24 +0000 (UTC) Received: from vschneid-thinkpadt14sgen2i.remote.csb (unknown [10.45.224.29]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id D9B8F1800576; Fri, 10 Oct 2025 15:44:08 +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 Subject: [PATCH v6 14/29] perf/x86/amd: Mark perf_lopwr_cb static call as __ro_after_init Date: Fri, 10 Oct 2025 17:38:24 +0200 Message-ID: <20251010153839.151763-15-vschneid@redhat.com> In-Reply-To: <20251010153839.151763-1-vschneid@redhat.com> References: <20251010153839.151763-1-vschneid@redhat.com> 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 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Content-Type: text/plain; charset="utf-8" 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) } } =20 -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); =20 void __init amd_brs_lopwr_init(void) --=20 2.51.0