From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Masami Hiramatsu Subject: [RFC PATCH 6/7] um: Suppress non-fatal messages when quiet Date: Fri, 28 Apr 2017 19:26:48 +0900 Message-Id: <149337519863.14717.14783366681891976827.stgit@devbox> In-Reply-To: <149337478135.14717.16640886389891283.stgit@devbox> References: <149337478135.14717.16640886389891283.stgit@devbox> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org To: Jeff Dike , Richard Weinberger Cc: Masami Hiramatsu , user-mode-linux-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org List-ID: Suppress non-fatal boot messages when "quiet" kernel parameter is given. Signed-off-by: Masami Hiramatsu --- arch/um/os-Linux/util.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/um/os-Linux/util.c b/arch/um/os-Linux/util.c index 8745f23..7afcb41 100644 --- a/arch/um/os-Linux/util.c +++ b/arch/um/os-Linux/util.c @@ -13,6 +13,7 @@ #include #include #include +#include #include void stack_protections(unsigned long address) @@ -153,10 +154,25 @@ void um_early_printk(const char *s, unsigned int n) printf("%.*s", n, s); } +static int quiet_non_fatal; + +static int __init quiet_cmd_param(char *str, int *add) +{ + quiet_non_fatal = 1; + return 0; +} + +__uml_setup("quiet", quiet_cmd_param, +"quiet\n" +" Turns off non-fatal message during boot.\n\n"); + void non_fatal(const char *fmt, ...) { va_list list; + if (quiet_non_fatal) + return; + va_start(list, fmt); vfprintf(stderr, fmt, list); va_end(list);