trace_readwrite.c
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// SPDX-License-Identifier: GPL-2.0
/*
* Register read and write tracepoints
*
* Copyright (c) 2021, The Linux Foundation. All rights reserved.
*/
#include <linux/kallsyms.h>
#include <linux/uaccess.h>
#include <linux/module.h>
#include <linux/ftrace.h>
#include <linux/log_mmiorw.h>
#define CREATE_TRACE_POINTS
#include <trace/events/rwmmio.h>
#ifdef CONFIG_TRACE_MMIO_ACCESS
void __log_write_mmio(u64 val, u8 width, volatile void __iomem *addr)
{
trace_rwmmio_write(CALLER_ADDR0, val, width, addr);
}
EXPORT_SYMBOL_GPL(__log_write_mmio);
EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_write);
void __log_read_mmio(u8 width, const volatile void __iomem *addr)
{
trace_rwmmio_read(CALLER_ADDR0, width, addr);
}
EXPORT_SYMBOL_GPL(__log_read_mmio);
EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_read);
void __log_post_read_mmio(u64 val, u8 width, const volatile void __iomem *addr)
{
trace_rwmmio_post_read(CALLER_ADDR0, val, width, addr);
}
EXPORT_SYMBOL_GPL(__log_post_read_mmio);
EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_post_read);
#endif