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Wed, 29 Jul 2020 11:39:40 -0400 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-153-cuSQi9dfNsC4pkKlsUooCg-1; Wed, 29 Jul 2020 11:39:34 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D85AC8017FB for ; Wed, 29 Jul 2020 15:39:33 +0000 (UTC) Received: from localhost (ovpn-112-185.ams2.redhat.com [10.36.112.185]) by smtp.corp.redhat.com (Postfix) with ESMTP id B65CA71906; Wed, 29 Jul 2020 15:39:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1596037176; 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: content-transfer-encoding:content-transfer-encoding; bh=TMX7oK+YZgERLAfX7ZNg22dPrVyCnBORm9hMJctJTEc=; b=LC2XPo//ia8W9VgcvwXCYwrkGGALB7sXx6dSZc1pvGQwjUinszyklDsQZbODzhgr6Hd7s5 pAy77rOj3XHzjuUd8gzLuq1mrfH1a6KmFinaJAKm1fNCe8OevQmPKYFqhCM1QaLZs0nuH6 vIu2zEReU269Ts4MMvOQ1QQBl/ocZn0= X-MC-Unique: cuSQi9dfNsC4pkKlsUooCg-1 From: Stefan Hajnoczi To: qemu-devel@nongnu.org Subject: [PATCH for-5.1] tracetool: carefully define SDT_USE_VARIADIC Date: Wed, 29 Jul 2020 16:39:26 +0100 Message-Id: <20200729153926.127083-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=207.211.31.120; envelope-from=stefanha@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/29 09:27:47 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -13 X-Spam_score: -1.4 X-Spam_bar: - X-Spam_report: (-1.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MIME_BASE64_TEXT=1.741, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stefan Hajnoczi Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" The dtrace backend defines SDT_USE_VARIADIC as a workaround for a conflict with a LTTng UST header file, which requires SDT_USE_VARIADIC to be defined. LTTng UST breaks if included after generated dtrace headers because SDT_USE_VARIADIC will already be defined: #ifdef LTTNG_UST_HAVE_SDT_INTEGRATION #define SDT_USE_VARIADIC <-- error, it's already defined #include Be more careful when defining SDT_USE_VARIADIC. This fixes the build when both the dtrace and ust tracers are enabled at the same time. Fixes: 27e08bab94f7c6ebe0b75938c98c394c969e3fd8 ("tracetool: work around us= t include conflict") Signed-off-by: Stefan Hajnoczi Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- scripts/tracetool/backend/dtrace.py | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/scripts/tracetool/backend/dtrace.py b/scripts/tracetool/backen= d/dtrace.py index b7fe4c1b50..fc0c8fc52f 100644 --- a/scripts/tracetool/backend/dtrace.py +++ b/scripts/tracetool/backend/dtrace.py @@ -44,11 +44,15 @@ def generate_h_begin(events, group): # require SDT_USE_VARIADIC to be defined. If dtrace includes # first without defining SDT_USE_VARIADIC then ust breaks because the # STAP_PROBEV() macro is not defined. + out('#ifndef SDT_USE_VARIADIC') out('#define SDT_USE_VARIADIC 1') + out('#endif') =20 out('#include "%s"' % header, '') =20 + out('#undef SDT_USE_VARIADIC') + # SystemTap defines __ENABLED() but other DTrace # implementations might not. for e in events: --=20 2.26.2