3  * Linux VM pressure
41  * These thresholds are used when we account memory pressure through
51  * critical pressure as number of pages will be less than "window size".
111 static enum vmpressure_levels vmpressure_level(unsigned long pressure)  in vmpressure_level()  argument
113 	if (pressure >= vmpressure_level_critical)  in vmpressure_level()
115 	else if (pressure >= vmpressure_level_med)  in vmpressure_level()
124 	unsigned long pressure = 0;  in vmpressure_calc_level()  local
140 	pressure = scale - (reclaimed * scale / scanned);  in vmpressure_calc_level()
141 	pressure = pressure * 100 / scale;  in vmpressure_calc_level()
144 	pr_debug("%s: %3lu  (s: %lu  r: %lu)\n", __func__, pressure,  in vmpressure_calc_level()
147 	return vmpressure_level(pressure);  in vmpressure_calc_level()
219  * vmpressure() - Account memory pressure through scanned/reclaimed ratio
227  * "instantaneous" memory pressure (scanned/reclaimed ratio). The raw
228  * pressure index is then further refined and averaged over time.
231  * mode: @memcg is considered the pressure root and userspace is
258 	 * Here we only want to account pressure that userland is able to  in vmpressure()
260 	 * pressure; if we notify userland about that kind of pressure,  in vmpressure()
275 	 * report the critical pressure, yet. If the scanning priority  in vmpressure()
315 			 * For hysteresis keep the pressure state  in vmpressure()
317 			 * pressure events can occur.  in vmpressure()
325  * vmpressure_prio() - Account memory pressure through reclaimer priority level
360  * @args:	event arguments (pressure level threshold, optional mode)
365  * pressure level threshold (one of vmpressure_str_levels, i.e. "low", "medium",