From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41466) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UnQd7-00023Z-W5 for qemu-devel@nongnu.org; Fri, 14 Jun 2013 05:49:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UnQcy-0000iS-40 for qemu-devel@nongnu.org; Fri, 14 Jun 2013 05:49:13 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50509) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UnQcx-0000iG-KB for qemu-devel@nongnu.org; Fri, 14 Jun 2013 05:49:03 -0400 From: Stefan Hajnoczi Date: Fri, 14 Jun 2013 11:48:30 +0200 Message-Id: <1371203313-26490-11-git-send-email-stefanha@redhat.com> In-Reply-To: <1371203313-26490-1-git-send-email-stefanha@redhat.com> References: <1371203313-26490-1-git-send-email-stefanha@redhat.com> Subject: [Qemu-devel] [RFC 10/13] block: disable I/O throttling outside main loop List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Kevin Wolf , Paolo Bonzini , Anthony Liguori , Ping Fan Liu , Stefan Hajnoczi Timers only work in the main loop. This means threads running their own AioContext cannot use I/O throttling for now. Signed-off-by: Stefan Hajnoczi --- block.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/block.c b/block.c index d986fc8..2d7a0f8 100644 --- a/block.c +++ b/block.c @@ -169,6 +169,11 @@ static void bdrv_io_limits_intercept(BlockDriverState *bs, { int64_t wait_time = -1; + /* Timers currently only work in the main loop */ + if (*get_thread_aio_context() != qemu_get_aio_context()) { + return; + } + if (!qemu_co_queue_empty(&bs->throttled_reqs)) { qemu_co_queue_wait(&bs->throttled_reqs); } -- 1.8.1.4