• Steven Rostedt's avatar
    tracing: Enable comm recording if trace_printk() is used · 81698831
    Steven Rostedt authored
    
    
    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: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
    81698831