From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from s3.sipsolutions.net ([2a01:4f8:191:4433::2] helo=sipsolutions.net) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lHTqx-005UJI-AJ for linux-um@lists.infradead.org; Wed, 03 Mar 2021 15:56:07 +0000 From: Benjamin Berg Subject: [PATCH 07/27] um: Do not use printk in SIGWINCH helper thread Date: Wed, 3 Mar 2021 16:55:03 +0100 Message-Id: <20210303155523.124277-8-benjamin@sipsolutions.net> In-Reply-To: <20210303155523.124277-1-benjamin@sipsolutions.net> References: <20210303155523.124277-1-benjamin@sipsolutions.net> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-um" Errors-To: linux-um-bounces+geert=linux-m68k.org@lists.infradead.org To: linux-um@lists.infradead.org Cc: Benjamin Berg The thread is running outside of the UML kernel scope and is a helper. As such, printk cannot work and os_info must be used instead. Signed-off-by: Benjamin Berg --- arch/um/drivers/chan_user.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c index d8845d4aac6a..9d87c9998741 100644 --- a/arch/um/drivers/chan_user.c +++ b/arch/um/drivers/chan_user.c @@ -153,8 +153,8 @@ static int winch_thread(void *arg) pipe_fd = data->pipe_fd; count = write(pipe_fd, &c, sizeof(c)); if (count != sizeof(c)) - printk(UM_KERN_ERR "winch_thread : failed to write " - "synchronization byte, err = %d\n", -count); + os_info("winch_thread : failed to write synchronization byte, err = %d\n", + -count); /* * We are not using SIG_IGN on purpose, so don't fix it as I thought to @@ -166,28 +166,28 @@ static int winch_thread(void *arg) sigfillset(&sigs); /* Block all signals possible. */ if (sigprocmask(SIG_SETMASK, &sigs, NULL) < 0) { - printk(UM_KERN_ERR "winch_thread : sigprocmask failed, " - "errno = %d\n", errno); + os_info("winch_thread : sigprocmask failed, errno = %d\n", + errno); exit(1); } /* In sigsuspend(), block anything else than SIGWINCH. */ sigdelset(&sigs, SIGWINCH); if (setsid() < 0) { - printk(UM_KERN_ERR "winch_thread : setsid failed, errno = %d\n", + os_info("winch_thread : setsid failed, errno = %d\n", errno); exit(1); } if (ioctl(pty_fd, TIOCSCTTY, 0) < 0) { - printk(UM_KERN_ERR "winch_thread : TIOCSCTTY failed on " - "fd %d err = %d\n", pty_fd, errno); + os_info("winch_thread : TIOCSCTTY failed on " + "fd %d err = %d\n", pty_fd, errno); exit(1); } if (tcsetpgrp(pty_fd, os_getpid()) < 0) { - printk(UM_KERN_ERR "winch_thread : tcsetpgrp failed on " - "fd %d err = %d\n", pty_fd, errno); + os_info("winch_thread : tcsetpgrp failed on fd %d err = %d\n", + pty_fd, errno); exit(1); } @@ -199,8 +199,8 @@ static int winch_thread(void *arg) */ count = read(pipe_fd, &c, sizeof(c)); if (count != sizeof(c)) - printk(UM_KERN_ERR "winch_thread : failed to read " - "synchronization byte, err = %d\n", errno); + os_info("winch_thread : failed to read synchronization byte, err = %d\n", + errno); while(1) { /* @@ -211,8 +211,8 @@ static int winch_thread(void *arg) count = write(pipe_fd, &c, sizeof(c)); if (count != sizeof(c)) - printk(UM_KERN_ERR "winch_thread : write failed, " - "err = %d\n", errno); + os_info("winch_thread : write failed, err = %d\n", + errno); } } -- 2.29.2 _______________________________________________ linux-um mailing list linux-um@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-um