From patchwork Mon Jan 13 20:34:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandar Markovic X-Patchwork-Id: 11330865 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CEDF092A for ; Mon, 13 Jan 2020 20:50:50 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AE75E206D7 for ; Mon, 13 Jan 2020 20:50:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AE75E206D7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=rt-rk.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:55686 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ir6fQ-0004ND-7L for patchwork-qemu-devel@patchwork.kernel.org; Mon, 13 Jan 2020 15:50:32 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:51149) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ir6Tp-0005Zc-UP for qemu-devel@nongnu.org; Mon, 13 Jan 2020 15:38:35 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ir6To-00077w-Ny for qemu-devel@nongnu.org; Mon, 13 Jan 2020 15:38:33 -0500 Received: from mx2.rt-rk.com ([89.216.37.149]:47883 helo=mail.rt-rk.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ir6To-00075b-GL for qemu-devel@nongnu.org; Mon, 13 Jan 2020 15:38:32 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id A1AB51A1FB3; Mon, 13 Jan 2020 21:38:29 +0100 (CET) X-Virus-Scanned: amavisd-new at rt-rk.com Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.14.106]) by mail.rt-rk.com (Postfix) with ESMTPSA id 87DB21A1DF2; Mon, 13 Jan 2020 21:38:29 +0100 (CET) From: Aleksandar Markovic To: qemu-devel@nongnu.org Subject: [PATCH v5 19/20] linux-user: Add support for KCOV_ ioctls Date: Mon, 13 Jan 2020 21:34:42 +0100 Message-Id: <1578947683-21011-20-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1578947683-21011-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1578947683-21011-1-git-send-email-aleksandar.markovic@rt-rk.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 89.216.37.149 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: laurent@vivier.eu, amarkovic@wavecomp.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Aleksandar Markovic KCOV_ENABLE and KCOV_DISABLE play the role in kernel coverage tracing. These ioctls do not use the third argument of ioctl() system call and are straightforward to implement in QEMU. Signed-off-by: Aleksandar Markovic Reviewed-by: Laurent Vivier --- linux-user/ioctls.h | 5 +++++ linux-user/syscall.c | 3 +++ linux-user/syscall_defs.h | 4 ++++ 3 files changed, 12 insertions(+) diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index d72cd76..39b3825 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -552,3 +552,8 @@ IOCTL_IGNORE(TIOCSTART) IOCTL_IGNORE(TIOCSTOP) #endif + +#ifdef CONFIG_KCOV + IOCTL(KCOV_ENABLE, 0, TYPE_NULL) + IOCTL(KCOV_DISABLE, 0, TYPE_NULL) +#endif diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 171c0ca..6edcb0d 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -73,6 +73,9 @@ #ifdef CONFIG_SENDFILE #include #endif +#ifdef CONFIG_KCOV +#include +#endif #define termios host_termios #define winsize host_winsize diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 225dcfb..87e390d 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -2457,6 +2457,10 @@ struct target_mtpos { #define TARGET_MTIOCGET TARGET_IOR('m', 2, struct target_mtget) #define TARGET_MTIOCPOS TARGET_IOR('m', 3, struct target_mtpos) +/* kcov ioctls */ +#define TARGET_KCOV_ENABLE TARGET_IO('c', 100) +#define TARGET_KCOV_DISABLE TARGET_IO('c', 101) + struct target_sysinfo { abi_long uptime; /* Seconds since boot */ abi_ulong loads[3]; /* 1, 5, and 15 minute load averages */