Contributors: 9
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Linus Torvalds (pre-git) |
49 |
29.88% |
4 |
25.00% |
| Paul Gortmaker |
26 |
15.85% |
2 |
12.50% |
| Johannes Weiner |
26 |
15.85% |
2 |
12.50% |
| Ingo Molnar |
22 |
13.41% |
2 |
12.50% |
| Thomas Gleixner |
19 |
11.59% |
2 |
12.50% |
| Vik Heyndrickx |
18 |
10.98% |
1 |
6.25% |
| Andrew Morton |
2 |
1.22% |
1 |
6.25% |
| Linus Torvalds |
1 |
0.61% |
1 |
6.25% |
| Greg Kroah-Hartman |
1 |
0.61% |
1 |
6.25% |
| Total |
164 |
|
16 |
|
/* 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) */
/*
* a1 = a0 * e + a * (1 - e)
*/
static inline unsigned long
calc_load(unsigned long load, unsigned long exp, unsigned long active)
{
unsigned long newload;
newload = load * exp + active * (FIXED_1 - exp);
if (active >= load)
newload += FIXED_1-1;
return newload / FIXED_1;
}
extern unsigned long calc_load_n(unsigned long load, unsigned long exp,
unsigned long active, unsigned int n);
#define LOAD_INT(x) ((x) >> FSHIFT)
#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
extern void calc_global_load(void);
#endif /* _LINUX_SCHED_LOADAVG_H */