| Date | Thu, 24 Jul 2008 09:57:53 -0400 (EDT) | From | Steven Rostedt <> | Subject | Re: [patch 08/17] LTTng instrumentation - kernel |
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On Tue, 15 Jul 2008, Mathieu Desnoyers wrote: > > /* > * Low level drivers may need that to know if they can schedule in > @@ -601,6 +603,7 @@ asmlinkage int printk(const char *fmt, . > int r; > > va_start(args, fmt); > + trace_kernel_printk(__builtin_return_address(0));
BTW, ftrace.h has macros that let you use CALLER_ADDR0 for __builtin_return_address. It also converts it from a pointer to a long, but makes the code look prettier.
> r = vprintk(fmt, args); > va_end(args); > > @@ -677,6 +680,9 @@ asmlinkage int vprintk(const char *fmt, > raw_local_irq_save(flags); > this_cpu = smp_processor_id(); > > + trace_kernel_vprintk(__builtin_return_address(0), > + printk_buf, printed_len); > + > /* > * Ouch, printk recursed into itself! > */
-- Steve
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