/* 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 */