From nobody Mon Apr 6 09:41:24 2026 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 CE8D8C38145 for ; Thu, 8 Sep 2022 19:57:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229697AbiIHT50 (ORCPT ); Thu, 8 Sep 2022 15:57:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43158 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229647AbiIHT5V (ORCPT ); Thu, 8 Sep 2022 15:57:21 -0400 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 81CACA50D4 for ; Thu, 8 Sep 2022 12:57:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1662667039; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=omuRsfdH4SASi5AXCw7JGKydIaf3lsqyRLYETVJdhrw=; b=Pp4Dugk6jLOzeoauI8kv3tyjeJOeUUTAuCuGWqwKPeuxGKAe5g12Pd4o2BmQ1APk+ahimi n0DNTuJV3cdX8AafJKtocV55gWKuruaydaQtlLZeMv4i5tPQ2iAcMqVMeItfYq26hnDGSy 2lTkujP0075cPwOiIKFdW+S5MH4A92s= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-554-L6ZgRyXdPK-C3UIZmB_0JA-1; Thu, 08 Sep 2022 15:57:16 -0400 X-MC-Unique: L6ZgRyXdPK-C3UIZmB_0JA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 5A2B680231E; Thu, 8 Sep 2022 19:57:16 +0000 (UTC) Received: from fuller.cnet (ovpn-112-2.gru2.redhat.com [10.97.112.2]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 287F21121315; Thu, 8 Sep 2022 19:57:16 +0000 (UTC) Received: by fuller.cnet (Postfix, from userid 1000) id 253E1415BE29; Thu, 8 Sep 2022 16:54:07 -0300 (-03) Message-ID: <20220908195111.813208840@redhat.com> User-Agent: quilt/0.66 Date: Thu, 08 Sep 2022 16:29:03 -0300 From: Marcelo Tosatti To: linux-kernel@vger.kernel.org Cc: Frederic Weisbecker , Juri Lelli , Daniel Bristot de Oliveira , Prasad Pandit , Valentin Schneider , Yair Podemsky , Thomas Gleixner , Marcelo Tosatti Subject: [RFC PATCH 4/7] clockevent unbind: use smp_call_func_single_fail References: <20220908192859.546633738@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Convert clockevents_unbind from smp_call_function_single to smp_call_func_single_fail, which will fail in case the target CPU is tagged as block interference CPU. Signed-off-by: Marcelo Tosatti Index: linux-2.6/kernel/time/clockevents.c =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --- linux-2.6.orig/kernel/time/clockevents.c +++ linux-2.6/kernel/time/clockevents.c @@ -13,6 +13,7 @@ #include #include #include +#include =20 #include "tick-internal.h" =20 @@ -416,9 +417,14 @@ static void __clockevents_unbind(void *a */ static int clockevents_unbind(struct clock_event_device *ced, int cpu) { + int ret; struct ce_unbind cu =3D { .ce =3D ced, .res =3D -ENODEV }; =20 - smp_call_function_single(cpu, __clockevents_unbind, &cu, 1); + block_interf_read_lock(); + ret =3D smp_call_func_single_fail(cpu, __clockevents_unbind, &cu, 1); + block_interf_read_unlock(); + if (ret) + return ret; return cu.res; }