printk

Is there a better way to debug printouts in the Linux kernel? Right now littering the code with: printk(KERN_DBG "%s:%d - %s() <message>", __FILE__, __LINE__, __FUNCTION__ ); Which isn't very clean. There ought to be a way for the whole row to be #ifdef :ed in some nice way. Use /* At the top of the file, before any includes */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/printk.h> /* in code... */ pr_devel("foobar happened\n"); as a basis (the standard practice). You can then add __FILE__ or __LINE__ to the pr_fmt definition if you need. If this is for quick debugging, just

I am making a simple enque/deque program in kernel. I want to print message in kernel, and this is what I got: [18594.595747] Enqueue 3 [18594.595748] queue : [18594.595751] 2 [18594.595751] 1 [18594.595752] 3 But I want to print this without newline: [8594.595747] Enqueue 3 [18594.595748] queue : 2 1 3 This is a part of my code: printk(KERN_ALERT "Enqueue %d \n queue : ", a); rear++; for(i = front; i<rear; i++) printk(KERN_ALERT "%d ", queue_test[i]); In short, I want to print in kernel a message in one line. But if I use printk, it changes line automatically. How do I print a message in one

everybody knows that interrupt handler should be short as possible. and adding functions like printk for debugging inside an interrupt handler is something that shouldn't be done. Actually, I tried it before when I was debugging the linux kernel for an interrupt driven char device I written, and it wrecked the timing of the driver. The question I have, is why this is happening ? printk function is buffered ! it means, as far as I understand that the data is inserted in to a queue, and it's being handled later, most probably after the interrupt handler is finished. So why doesn't it work ? The

I am debugging a driver for linux (specifically ubuntu server 9.04), and there are several printf statements in the code. Where can I view the output of these statements? EDIT1: What i'm trying to do is write to kernel using the proc file-system. The print code is static int proc_fractel_config_write(struct file *file, const char *argbuf, unsigned long count, void *data) { printk(KERN_DEBUG "writing fractel config\n"); ... In kern.log, I see the following message when i try to overwrite the file /proc/net/madwifi/ath1/fractel_config (with varying time of course). [ 8671.924873] proc write [