From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42441) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YGlOD-0005YV-7x for qemu-devel@nongnu.org; Thu, 29 Jan 2015 04:28:07 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YGlO4-0004Fr-Db for qemu-devel@nongnu.org; Thu, 29 Jan 2015 04:27:53 -0500 Received: from mx1.redhat.com ([209.132.183.28]:43431) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YGlO4-0004Ez-5G for qemu-devel@nongnu.org; Thu, 29 Jan 2015 04:27:44 -0500 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id t0T9RhYf002982 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Thu, 29 Jan 2015 04:27:43 -0500 From: Markus Armbruster Date: Thu, 29 Jan 2015 10:27:37 +0100 Message-Id: <1422523658-3503-9-git-send-email-armbru@redhat.com> In-Reply-To: <1422523658-3503-1-git-send-email-armbru@redhat.com> References: <1422523658-3503-1-git-send-email-armbru@redhat.com> Subject: [Qemu-devel] [PATCH v2 8/9] balloon: Factor out common "is balloon active" test List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kraxel@redhat.com, lcapitulino@redhat.com Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- balloon.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) diff --git a/balloon.c b/balloon.c index 2884c2d..728bb70 100644 --- a/balloon.c +++ b/balloon.c @@ -36,6 +36,19 @@ static QEMUBalloonEvent *balloon_event_fn; static QEMUBalloonStatus *balloon_stat_fn; static void *balloon_opaque; +static bool have_ballon(Error **errp) +{ + if (kvm_enabled() && !kvm_has_sync_mmu()) { + error_set(errp, QERR_KVM_MISSING_CAP, "synchronous MMU", "balloon"); + return false; + } + if (!balloon_event_fn) { + error_set(errp, QERR_DEVICE_NOT_ACTIVE, "balloon"); + return false; + } + return true; +} + int qemu_add_balloon_handler(QEMUBalloonEvent *event_func, QEMUBalloonStatus *stat_func, void *opaque) { @@ -66,13 +79,7 @@ BalloonInfo *qmp_query_balloon(Error **errp) { BalloonInfo *info; - if (kvm_enabled() && !kvm_has_sync_mmu()) { - error_set(errp, QERR_KVM_MISSING_CAP, "synchronous MMU", "balloon"); - return NULL; - } - - if (!balloon_stat_fn) { - error_set(errp, QERR_DEVICE_NOT_ACTIVE, "balloon"); + if (!have_ballon(errp)) { return NULL; } @@ -83,8 +90,7 @@ BalloonInfo *qmp_query_balloon(Error **errp) void qmp_balloon(int64_t target, Error **errp) { - if (kvm_enabled() && !kvm_has_sync_mmu()) { - error_set(errp, QERR_KVM_MISSING_CAP, "synchronous MMU", "balloon"); + if (!have_ballon(errp)) { return; } @@ -92,11 +98,6 @@ void qmp_balloon(int64_t target, Error **errp) error_set(errp, QERR_INVALID_PARAMETER_VALUE, "target", "a size"); return; } - - if (!balloon_event_fn) { - error_set(errp, QERR_DEVICE_NOT_ACTIVE, "balloon"); - return; - } trace_balloon_event(balloon_opaque, target); balloon_event_fn(balloon_opaque, target); -- 1.9.3