Commit 1c53d781 authored by Steven Rostedt's avatar Steven Rostedt Committed by Steven Rostedt (Google)
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tracing: Make printk_trace global for tracing system 

The printk_trace is used to determine which trace_array trace_printk()
writes to. By making it a global variable among the tracing subsystem it
will allow the trace_printk functions to be moved out of trace.c and still
have direct access to that variable.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://patch.msgid.link/20260208032450.144525891@kernel.org


Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent 3e6c8f80

kernel/trace/trace.c

+1 −1
Original line number Diff line number Diff line
@@ -534,7 +534,7 @@ static struct trace_array global_trace = { 
	.trace_flags = TRACE_DEFAULT_FLAGS,

};



static struct trace_array *printk_trace = &global_trace;

struct trace_array *printk_trace = &global_trace;



/* List of trace_arrays interested in the top level trace_marker */

static LIST_HEAD(marker_copies);

kernel/trace/trace.h

+2 −0
Original line number Diff line number Diff line
@@ -482,6 +482,8 @@ extern bool trace_clock_in_ns(struct trace_array *tr); 


extern unsigned long trace_adjust_address(struct trace_array *tr, unsigned long addr);



extern struct trace_array *printk_trace;



/*

 * The global tracer (top) should be the first trace array added,

 * but we check the flag anyway.