linux - What is the similar to printk in user mode? -

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linux - What is the similar to printk in user mode? -

we can utilize printk send debug message in kernal driver. have user mode ap phone call kernal driver. output user mode ap debug message kernal mode driver @ same time. how that?

if understood question correctly, guess looking syslog c api. $ man 3 syslog tells need.

linux debugging driver syslog printk

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