2135 static void fmeter_init(struct fmeter *fmp)  in fmeter_init()  argument
2137 	fmp->cnt = 0;  in fmeter_init()
2138 	fmp->val = 0;  in fmeter_init()
2139 	fmp->time = 0;  in fmeter_init()
2140 	spin_lock_init(&fmp->lock);  in fmeter_init()
2144 static void fmeter_update(struct fmeter *fmp)  in fmeter_update()  argument
2150 	ticks = now - fmp->time;  in fmeter_update()
2157 		fmp->val = (FM_COEF * fmp->val) / FM_SCALE;  in fmeter_update()
2158 	fmp->time = now;  in fmeter_update()
2160 	fmp->val += ((FM_SCALE - FM_COEF) * fmp->cnt) / FM_SCALE;  in fmeter_update()
2161 	fmp->cnt = 0;  in fmeter_update()
2165 static void fmeter_markevent(struct fmeter *fmp)  in fmeter_markevent()  argument
2167 	spin_lock(&fmp->lock);  in fmeter_markevent()
2168 	fmeter_update(fmp);  in fmeter_markevent()
2169 	fmp->cnt = min(FM_MAXCNT, fmp->cnt + FM_SCALE);  in fmeter_markevent()
2170 	spin_unlock(&fmp->lock);  in fmeter_markevent()
2174 static int fmeter_getrate(struct fmeter *fmp)  in fmeter_getrate()  argument
2178 	spin_lock(&fmp->lock);  in fmeter_getrate()
2179 	fmeter_update(fmp);  in fmeter_getrate()
2180 	val = fmp->val;  in fmeter_getrate()
2181 	spin_unlock(&fmp->lock);  in fmeter_getrate()