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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_SCHED_LOADAVG_H
#define _LINUX_SCHED_LOADAVG_H

/*
 * These are the constant used to fake the fixed-point load-average
 * counting. Some notes:
 *  - 11 bit fractions expand to 22 bits by the multiplies: this gives
 *    a load-average precision of 10 bits integer + 11 bits fractional
 *  - if you want to count load-averages more often, you need more
 *    precision, or rounding will get you. With 2-second counting freq,
 *    the EXP_n values would be 1981, 2034 and 2043 if still using only
 *    11 bit fractions.
 */
extern unsigned long avenrun[];		/* Load averages */
extern void get_avenrun(unsigned long *loads, unsigned long offset, int shift);

#define FSHIFT		11		/* nr of bits of precision */
#define FIXED_1		(1<<FSHIFT)	/* 1.0 as fixed-point */
#define LOAD_FREQ	(5*HZ+1)	/* 5 sec intervals */
#define EXP_1		1884		/* 1/exp(5sec/1min) as fixed-point */
#define EXP_5		2014		/* 1/exp(5sec/5min) */
#define EXP_15		2037		/* 1/exp(5sec/15min) */

#define CALC_LOAD(load,exp,n) \
	load *= exp; \
	load += n*(FIXED_1-exp); \
	load >>= FSHIFT;

extern void calc_global_load(unsigned long ticks);

#endif /* _LINUX_SCHED_LOADAVG_H */

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autogroup.h File 1.2 KB 0644
clock.h File 2.45 KB 0644
coredump.h File 2.75 KB 0644
cpufreq.h File 887 B 0644
cputime.h File 5.13 KB 0644
deadline.h File 597 B 0644
debug.h File 1.41 KB 0644
hotplug.h File 578 B 0644
idle.h File 1.77 KB 0644
init.h File 240 B 0644
isolation.h File 1.33 KB 0644
jobctl.h File 1.46 KB 0644
loadavg.h File 1.17 KB 0644
mm.h File 7.63 KB 0644
nohz.h File 1.22 KB 0644
numa_balancing.h File 1.26 KB 0644
prio.h File 1.71 KB 0644
rt.h File 1.41 KB 0644
signal.h File 17.79 KB 0644
smt.h File 415 B 0644
stat.h File 1.02 KB 0644
sysctl.h File 2.5 KB 0644
task.h File 3.9 KB 0644
task_stack.h File 3.03 KB 0644
topology.h File 6.18 KB 0644
user.h File 1.7 KB 0644
wake_q.h File 1.79 KB 0644
xacct.h File 854 B 0644