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ff4e233d8a
Each RV monitor has one static buffer to send to the reactors. If multiple errors are detected simultaneously, the one buffer could be overwritten. Instead, leave it to the reactors to handle buffering. Reviewed-by: Gabriele Monaco <gmonaco@redhat.com> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2019-2022 Red Hat, Inc. Daniel Bristot de Oliveira <bristot@kernel.org>
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*
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* Printk RV reactor:
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* Prints the exception msg to the kernel message log.
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*/
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#include <linux/ftrace.h>
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#include <linux/tracepoint.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/rv.h>
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__printf(1, 2) static void rv_printk_reaction(const char *msg, ...)
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{
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va_list args;
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va_start(args, msg);
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vprintk_deferred(msg, args);
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va_end(args);
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}
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static struct rv_reactor rv_printk = {
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.name = "printk",
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.description = "prints the exception msg to the kernel message log.",
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.react = rv_printk_reaction
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};
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static int __init register_react_printk(void)
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{
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rv_register_reactor(&rv_printk);
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return 0;
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}
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static void __exit unregister_react_printk(void)
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{
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rv_unregister_reactor(&rv_printk);
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}
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module_init(register_react_printk);
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module_exit(unregister_react_printk);
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MODULE_AUTHOR("Daniel Bristot de Oliveira");
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MODULE_DESCRIPTION("printk rv reactor: printk if an exception is hit.");
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