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-rw-r--r--kernel/trace/trace.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 2129ab9d2a4..2f8ac1f008f 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2951,6 +2951,15 @@ int __ftrace_printk(unsigned long ip, const char *fmt, ...)
}
EXPORT_SYMBOL_GPL(__ftrace_printk);
+int __ftrace_vprintk(unsigned long ip, const char *fmt, va_list ap)
+{
+ if (!(trace_flags & TRACE_ITER_PRINTK))
+ return 0;
+
+ return trace_vprintk(ip, task_curr_ret_stack(current), fmt, ap);
+}
+EXPORT_SYMBOL_GPL(__ftrace_vprintk);
+
static int trace_panic_handler(struct notifier_block *this,
unsigned long event, void *unused)
{