ftrace: add ftrace_vprintk
Impact: new helper function Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -302,6 +302,9 @@ ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3);
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extern int
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__ftrace_printk(unsigned long ip, const char *fmt, ...)
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__attribute__ ((format (printf, 2, 3)));
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# define ftrace_vprintk(fmt, ap) __ftrace_printk(_THIS_IP_, fmt, ap)
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extern int
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__ftrace_vprintk(unsigned long ip, const char *fmt, va_list ap);
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extern void ftrace_dump(void);
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#else
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static inline void
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@ -317,6 +320,11 @@ ftrace_printk(const char *fmt, ...)
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{
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return 0;
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}
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static inline int
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ftrace_vprintk(const char *fmt, va_list ap)
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{
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return 0;
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}
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static inline void ftrace_dump(void) { }
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#endif
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@ -2951,6 +2951,15 @@ int __ftrace_printk(unsigned long ip, const char *fmt, ...)
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}
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EXPORT_SYMBOL_GPL(__ftrace_printk);
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int __ftrace_vprintk(unsigned long ip, const char *fmt, va_list ap)
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{
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if (!(trace_flags & TRACE_ITER_PRINTK))
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return 0;
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return trace_vprintk(ip, task_curr_ret_stack(current), fmt, ap);
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}
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EXPORT_SYMBOL_GPL(__ftrace_vprintk);
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static int trace_panic_handler(struct notifier_block *this,
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unsigned long event, void *unused)
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{
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