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tracing: Pass export pointer as argument to ->write()

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By passing an export descriptor to the write function, users don't need to
keep a global static pointer and can rely on container_of() to fetch their
own structure.

Link: http://lkml.kernel.org/r/20170602102025.5140-1-felipe.balbi@linux.intel.com

Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Felipe Balbi
2017-06-02 13:20:25 +03:00
committed by Steven Rostedt (VMware)
parent c4bfd39d7f
commit a773d41927
3 changed files with 6 additions and 4 deletions
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kernel/trace/trace.c
+1 -1
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@@ -2415,7 +2415,7 @@ trace_process_export(struct trace_export *export,
entry = ring_buffer_event_data(event);
size = ring_buffer_event_length(event);
export->write(entry, size);
export->write(export, entry, size);
}
static DEFINE_MUTEX(ftrace_export_lock);