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#define multistatement(ms) ms /* trick to bypass checkpatch.pl error */
#define _entry multistatement(goto _entry; _entry)
/*
* ctracer_cut_paths - return filename without path
*/
#define trace_loc() printk(KERN_DEBUG"%s:%d %s ", __file__, __LINE__, __func__)
#define trace_hex(h) printk("%s = 0x%lX ", #h, (long int)h)
#define trace_dec(d) printk("%s = %ld ", #d, (long int)d)
#define trace_dec_ln(d) printk("%s = %ld\n", #d, (long int)d)
#define trace_ln(m) printk(KERN_CONT"\n")
#define ctracer_cut_path(fn) (fn[0] != '/' ? fn : (strrchr(fn, '/') + 1))
#define __file__ ctracer_cut_path(__FILE__)
/*
* print_context prints execution context:
* hard interrupt, soft interrupt or scheduled task
*/
#define print_context() \
pr_debug("%s:%d %s %s 0x%x\n", __file__, __LINE__, __func__, \
(in_irq() ? "harirq" : current->comm), preempt_count());
#define once(exp) do { \
static int _passed; if (!_passed) { exp; }; _passed = 1; } while (0)
#define check(a) \
(ret = a, ((ret < 0) ? pr_warn("%s:%i %s FAIL\n\t%i=%s\n", \
__file__, __LINE__, __func__, ret, #a) : 0), ret)
#define pr_debug_hex(h) pr_debug("%s:%d %s %s = 0x%lX\n", \
__file__, __LINE__, __func__, #h, (long int)h)
#define pr_debug_dec(d) pr_debug("%s:%d %s %s = %ld\n", \
__file__, __LINE__, __func__, #d, (long int)d)
#define pr_err_msg(m) pr_err("%s:%d %s %s\n", __file__, __LINE__, __func__, m)