diff options
Diffstat (limited to 'kernel/trace/rv/reactor_printk.c')
-rw-r--r-- | kernel/trace/rv/reactor_printk.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/kernel/trace/rv/reactor_printk.c b/kernel/trace/rv/reactor_printk.c new file mode 100644 index 0000000000..178759dbf8 --- /dev/null +++ b/kernel/trace/rv/reactor_printk.c @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019-2022 Red Hat, Inc. Daniel Bristot de Oliveira <bristot@kernel.org> + * + * Printk RV reactor: + * Prints the exception msg to the kernel message log. + */ +#include <linux/ftrace.h> +#include <linux/tracepoint.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/rv.h> + +static void rv_printk_reaction(char *msg) +{ + printk_deferred(msg); +} + +static struct rv_reactor rv_printk = { + .name = "printk", + .description = "prints the exception msg to the kernel message log.", + .react = rv_printk_reaction +}; + +static int __init register_react_printk(void) +{ + rv_register_reactor(&rv_printk); + return 0; +} + +static void __exit unregister_react_printk(void) +{ + rv_unregister_reactor(&rv_printk); +} + +module_init(register_react_printk); +module_exit(unregister_react_printk); + +MODULE_AUTHOR("Daniel Bristot de Oliveira"); +MODULE_DESCRIPTION("printk rv reactor: printk if an exception is hit."); |