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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_TRACE_H
#define _LINUX_TRACE_H
#ifdef CONFIG_TRACING
/*
* The trace export - an export of Ftrace output. The trace_export
* can process traces and export them to a registered destination as
* an addition to the current only output of Ftrace - i.e. ring buffer.
*
* If you want traces to be sent to some other place rather than ring
* buffer only, just need to register a new trace_export and implement
* its own .write() function for writing traces to the storage.
*
* next - pointer to the next trace_export
* write - copy traces which have been delt with ->commit() to
* the destination
*/
struct trace_export {
struct trace_export __rcu *next;
void (*write)(struct trace_export *, const void *, unsigned int);
};
int register_ftrace_export(struct trace_export *export);
int unregister_ftrace_export(struct trace_export *export);
#endif /* CONFIG_TRACING */
#endif /* _LINUX_TRACE_H */
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