2477 static void fmeter_init(struct fmeter *fmp)  in fmeter_init()  argument
2479 	fmp->cnt = 0;  in fmeter_init()
2480 	fmp->val = 0;  in fmeter_init()
2481 	fmp->time = 0;  in fmeter_init()
2482 	spin_lock_init(&fmp->lock);  in fmeter_init()
2486 static void fmeter_update(struct fmeter *fmp)  in fmeter_update()  argument
2492 	ticks = now - fmp->time;  in fmeter_update()
2499 		fmp->val = (FM_COEF * fmp->val) / FM_SCALE;  in fmeter_update()
2500 	fmp->time = now;  in fmeter_update()
2502 	fmp->val += ((FM_SCALE - FM_COEF) * fmp->cnt) / FM_SCALE;  in fmeter_update()
2503 	fmp->cnt = 0;  in fmeter_update()
2507 static void fmeter_markevent(struct fmeter *fmp)  in fmeter_markevent()  argument
2509 	spin_lock(&fmp->lock);  in fmeter_markevent()
2510 	fmeter_update(fmp);  in fmeter_markevent()
2511 	fmp->cnt = min(FM_MAXCNT, fmp->cnt + FM_SCALE);  in fmeter_markevent()
2512 	spin_unlock(&fmp->lock);  in fmeter_markevent()
2516 static int fmeter_getrate(struct fmeter *fmp)  in fmeter_getrate()  argument
2520 	spin_lock(&fmp->lock);  in fmeter_getrate()
2521 	fmeter_update(fmp);  in fmeter_getrate()
2522 	val = fmp->val;  in fmeter_getrate()
2523 	spin_unlock(&fmp->lock);  in fmeter_getrate()