tracing: Enable comm recording if trace_printk() is used
If comm recording is not enabled when trace_printk() is used then you just get this type of output: [ adding trace_printk("hello! %d", irq); in do_IRQ ] <...>-2843 [001] d.h. 80.812300: do_IRQ: hello! 14 <...>-2734 [002] d.h2 80.824664: do_IRQ: hello! 14 <...>-2713 [003] d.h. 80.829971: do_IRQ: hello! 14 <...>-2814 [000] d.h. 80.833026: do_IRQ: hello! 14 By enabling the comm recorder when trace_printk is enabled: hackbench-6715 [001] d.h. 193.233776: do_IRQ: hello! 21 sshd-2659 [001] d.h. 193.665862: do_IRQ: hello! 21 <idle>-0 [001] d.h1 193.665996: do_IRQ: hello! 21 Suggested-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Steven Rostedt
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b382ede6b5
commit
81698831bc
@@ -841,6 +841,7 @@ extern const char *__start___trace_bprintk_fmt[];
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extern const char *__stop___trace_bprintk_fmt[];
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void trace_printk_init_buffers(void);
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void trace_printk_start_comm(void);
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#undef FTRACE_ENTRY
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#define FTRACE_ENTRY(call, struct_name, id, tstruct, print, filter) \
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