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/openbmc/linux/net/ipv4/
H A Dtcp_cubic.c1 // SPDX-License-Identifier: GPL-2.0-only
8 * "CUBIC: A New TCP-Friendly High-Speed TCP Variant"
47 #define HYSTART_DELAY_THRESH(x) clamp(x, HYSTART_DELAY_MIN, HYSTART_DELAY_MAX) argument
64 /* Note parameters that are used for precomputing scale factors are read-only */
70 MODULE_PARM_DESC(initial_ssthresh, "initial value of slow start threshold");
79 " 1: packet-train 2: delay 3: both packet-train and delay");
110 ca->found = 0; in bictcp_reset()
115 return tcp_sk(sk)->tcp_mstamp; in bictcp_clock_us()
123 ca->round_start = ca->last_ack = bictcp_clock_us(sk); in bictcp_hystart_reset()
124 ca->end_seq = tp->snd_nxt; in bictcp_hystart_reset()
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H A Dtcp_lp.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * TCP Low Priority (TCP-LP)
11 * the original TCP-LP implementation:
16 * o Handling calculation of One-Way-Delay (OWD) within rtt_sample, since
26 * http://www.ece.rice.edu/~akuzma/Doc/akuzma/TCP-LP.pdf
28 * http://www-ece.rice.edu/networks/TCP-LP/
30 * 2.6.x module Authors:
34 * http://tcp-lp-mod.sourceforge.net/
47 * @LP_WITHIN_THR: are we within threshold?
50 * TCP-LP's state flags.
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/openbmc/linux/tools/testing/selftests/bpf/progs/
H A Dbpf_cubic.c1 // SPDX-License-Identifier: GPL-2.0-only
13 * "while (ca->ack_cnt > delta)" loop is changed to the equivalent
14 * "ca->ack_cnt / delta" operation.
39 #define HYSTART_DELAY_THRESH(x) clamp(x, HYSTART_DELAY_MIN, HYSTART_DELAY_MAX) argument
54 / (BICTCP_BETA_SCALE - beta);
55 /* calculate the "K" for (wmax-cwnd) = c/rtt * K^3
56 * so K = cubic_root( (wmax-cwnd)*rtt/c )
65 * HZ < 1,000,00 (corresponding to 10 nano-second)
96 ca->cnt = 0; in bictcp_reset()
97 ca->last_max_cwnd = 0; in bictcp_reset()
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/openbmc/linux/mm/
H A Dvmstat.c1 // SPDX-License-Identifier: GPL-2.0-only
11 * Copyright (C) 2008-2014 Christoph Lameter
43 atomic_long_set(&zone->vm_numa_event[item], 0); in zero_zone_numa_counters()
45 per_cpu_ptr(zone->per_cpu_zonestats, cpu)->vm_numa_event[item] in zero_zone_numa_counters()
121 ret[i] += this->event[i]; in sum_vm_events()
127 * The result is unavoidably approximate - it can change
150 count_vm_events(i, fold_state->event[i]); in vm_events_fold_cpu()
151 fold_state->event[i] = 0; in vm_events_fold_cpu()
178 pzstats = per_cpu_ptr(zone->per_cpu_zonestats, cpu); in fold_vm_zone_numa_events()
180 zone_numa_events[item] += xchg(&pzstats->vm_numa_event[item], 0); in fold_vm_zone_numa_events()
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H A Dmemcontrol.c1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* memcontrol.c - Memory Controller
38 #include <linux/page-flags.h>
39 #include <linux/backing-dev.h>
109 * Cgroups above their limits are maintained in a RB-Tree, independent of
206 /* for encoding cft->private value on file */
214 #define MEMFILE_PRIVATE(x, val) ((x) << 16 | (val)) argument
236 (current->flags & PF_EXITING); in task_is_dying()
244 return &memcg->vmpressure; in memcg_to_vmpressure()
272 * objcg->nr_charged_bytes can't have an arbitrary byte value. in obj_cgroup_release()
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/openbmc/linux/Documentation/input/devices/
H A Datarikbd.rst12 provides a convenient connection point for a mouse and switch-type joysticks.
13 The ikbd processor also maintains a time-of-day clock with one second
18 The ikbd communicates with the main processor over a high speed bi-directional
41 0xF8-0xFB relative mouse position records (lsbs determined by
43 0xFC time-of-day
67 ---------------------------
72 settable threshold of motion. Regardless of the threshold, all bits of
75 significantly more than the threshold delta x or y. This may happen since no
85 ; and x is the left button state
86 X ; delta x as twos complement integer
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/openbmc/linux/Documentation/devicetree/bindings/input/
H A Dsyna,rmi4.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jason A. Donenfeld <Jason@zx2c4.com>
11 - Matthias Schiffer <matthias.schiffer@ew.tq-group.com
12 - Vincent Huang <vincent.huang@tw.synaptics.com>
22 - syna,rmi4-i2c
23 - syna,rmi4-spi
28 '#address-cells':
31 '#size-cells':
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H A Diqs62x-keys.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/input/iqs62x-keys.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jeff LaBundy <jeff@labundy.com>
13 - $ref: input.yaml#
16 The Azoteq IQS620A, IQS621, IQS622, IQS624 and IQS625 multi-function sensors
17 feature a variety of self-capacitive, mutual-inductive and Hall-effect sens-
23 further details and examples. Sensor hardware configuration (self-capacitive
24 vs. mutual-inductive, etc.) is selected based on the device's firmware.
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/openbmc/linux/arch/arm64/boot/dts/freescale/
H A Dimx8mq-zii-ultra-rmb3.dts1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
6 /dts-v1/;
8 #include "imx8mq-zii-ultra.dtsi"
12 compatible = "zii,imx8mq-ultra-rmb3", "zii,imx8mq-ultra", "fsl,imx8mq";
15 compatible = "simple-audio-card";
16 simple-audio-card,name = "front";
17 simple-audio-card,format = "i2s";
18 simple-audio-card,bitclock-master = <&sound1_codec>;
19 simple-audio-card,frame-master = <&sound1_codec>;
20 simple-audio-card,widgets =
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/openbmc/linux/drivers/net/wireless/intel/iwlwifi/dvm/
H A Drx.c1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
6 * Copyright(c) 2018, 2020-2021 Intel Corporation
18 #include "iwl-trans.h"
19 #include "iwl-io.h"
34 struct iwl_error_resp *err_resp = (void *)pkt->data; in iwlagn_rx_reply_error()
36 IWL_ERR(priv, "Error Reply type 0x%08X cmd REPLY_ERROR (0x%02X) " in iwlagn_rx_reply_error()
37 "seq 0x%04X ser 0x%08X\n", in iwlagn_rx_reply_error()
38 le32_to_cpu(err_resp->error_type), in iwlagn_rx_reply_error()
39 err_resp->cmd_id, in iwlagn_rx_reply_error()
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/openbmc/u-boot/include/linux/
H A Dserial_reg.h1 /* SPDX-License-Identifier: GPL-2.0+ */
116 #define UART_MCR_AFE 0x20 /* Enable auto-RTS/CTS (TI16C550C/TI16C750) */
126 #define UART_LSR_THRE 0x20 /* Transmit-hold-register empty */
139 #define UART_MSR_DDCD 0x08 /* Delta DCD */
141 #define UART_MSR_DDSR 0x02 /* Delta DSR */
142 #define UART_MSR_DCTS 0x01 /* Delta CTS */
143 #define UART_MSR_ANY_DELTA 0x0F /* Any of the delta bits! */
222 * The Intel XScale on-chip UARTs define these bits
231 #define UART_FCR_PXAR1 0x00 /* receive FIFO threshold = 1 */
232 #define UART_FCR_PXAR8 0x40 /* receive FIFO threshold = 8 */
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/openbmc/linux/drivers/input/rmi4/
H A Drmi_2d_sensor.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2011-2016 Synaptics Incorporated
16 #define RMI_2D_REL_POS_MIN -128
26 struct rmi_2d_axis_alignment *axis_align = &sensor->axis_align; in rmi_2d_sensor_abs_process()
29 if (obj->type == RMI_2D_OBJECT_NONE) in rmi_2d_sensor_abs_process()
32 if (axis_align->flip_x) in rmi_2d_sensor_abs_process()
33 obj->x = sensor->max_x - obj->x; in rmi_2d_sensor_abs_process()
35 if (axis_align->flip_y) in rmi_2d_sensor_abs_process()
36 obj->y = sensor->max_y - obj->y; in rmi_2d_sensor_abs_process()
38 if (axis_align->swap_axes) in rmi_2d_sensor_abs_process()
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/openbmc/linux/drivers/net/wireless/ath/ath9k/
H A Ddfs.c2 * Copyright (c) 2008-2011 Atheros Communications Inc.
19 #include "hw-ops.h"
36 * - 20MHz chirp width over a pulse width of 50us
37 * - 5MHz chirp width over a pulse width of 100us
46 /* Threshold for difference of delta peaks */
83 is_ctl = fft_bitmap_weight(fft->lower_bins) != 0; in ath9k_get_max_index_ht40()
84 is_ext = fft_bitmap_weight(fft->upper_bins) != 0; in ath9k_get_max_index_ht40()
88 int mag_lower = fft_max_magnitude(fft->lower_bins); in ath9k_get_max_index_ht40()
89 int mag_upper = fft_max_magnitude(fft->upper_bins); in ath9k_get_max_index_ht40()
97 return fft_max_index(fft->lower_bins); in ath9k_get_max_index_ht40()
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/openbmc/linux/include/uapi/linux/
H A Dserial_reg.h1 /* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */
100 #define UART_FCR_R_TRIG_BITS(x) \ argument
101 (((x) & UART_FCR_TRIGGER_MASK) >> UART_FCR_R_TRIG_SHIFT)
131 #define UART_MCR_AFE 0x20 /* Enable auto-RTS/CTS (TI16C550C/TI16C750) */
141 #define UART_LSR_THRE 0x20 /* Transmit-hold-register empty */
154 #define UART_MSR_DDCD 0x08 /* Delta DCD */
156 #define UART_MSR_DDSR 0x02 /* Delta DSR */
157 #define UART_MSR_DCTS 0x01 /* Delta CTS */
238 * The Intel XScale on-chip UARTs define these bits
247 #define UART_FCR_PXAR1 0x00 /* receive FIFO threshold = 1 */
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/openbmc/linux/kernel/sched/
H A Dpsi.c1 // SPDX-License-Identifier: GPL-2.0
34 * In the FULL state of a given resource, all non-idle tasks are
48 * FULL means all non-idle tasks in the cgroup are delayed on the CPU
64 * unrealized due to resource contention *also* scales with non-idle
83 * we have to base our calculation on the number of non-idle tasks in
91 * FULL = (threads - min(nr_productive_tasks, threads)) / threads
97 * FULL = (256 - min(256, 256)) / 256 = 0%
99 * For the 1 out of 4 memory-delayed tasks, this yields:
103 * FULL = (4 - min(3, 4)) / 4 = 25%
106 * extension of the single-CPU model. ]
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/openbmc/linux/arch/mips/kvm/
H A Demulate.c23 #include <asm/cpu-info.h>
45 struct kvm_vcpu_arch *arch = &vcpu->arch; in kvm_compute_return_epc()
52 return -EINVAL; in kvm_compute_return_epc()
65 arch->gprs[insn.r_format.rd] = epc + 8; in kvm_compute_return_epc()
68 nextpc = arch->gprs[insn.r_format.rs]; in kvm_compute_return_epc()
71 return -EINVAL; in kvm_compute_return_epc()
84 if ((long)arch->gprs[insn.i_format.rs] < 0) in kvm_compute_return_epc()
93 if ((long)arch->gprs[insn.i_format.rs] >= 0) in kvm_compute_return_epc()
102 arch->gprs[31] = epc + 8; in kvm_compute_return_epc()
103 if ((long)arch->gprs[insn.i_format.rs] < 0) in kvm_compute_return_epc()
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/openbmc/linux/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/
H A Ddm.c1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2009-2010 Realtek Corporation.*/
17 0x081, /* 0, -12.0dB */
18 0x088, /* 1, -11.5dB */
19 0x090, /* 2, -11.0dB */
20 0x099, /* 3, -10.5dB */
21 0x0A2, /* 4, -10.0dB */
22 0x0AC, /* 5, -9.5dB */
23 0x0B6, /* 6, -9.0dB */
24 0x0C0, /* 7, -8.5dB */
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/openbmc/linux/drivers/net/wireless/ti/wlcore/
H A Dconf.h1 /* SPDX-License-Identifier: GPL-2.0-only */
117 * Range: 0 - 0xFFFFFFFF
122 * Packet detection threshold in the PHY.
130 * after a PS-poll has been transmitted.
132 * Range: 0 - 200000
139 * Range: 0 - 200000
147 * Range: 0 - 4096
152 * The RX Clear Channel Assessment threshold in the PHY
153 * (the energy threshold).
161 * Occupied Rx mem-blocks number which requires interrupting the host
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/openbmc/linux/drivers/infiniband/hw/bnxt_re/
H A Dqplib_fp.h2 * Broadcom NetXtreme-E RoCE driver.
4 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term
42 #include <rdma/bnxt_re-abi.h>
98 u32 threshold; member
204 /* FR-PMR */
304 #define BTH_PSN_MASK ((1 << 24) - 1)
350 #define CQE_MAX_IDX_PER_PG (CQE_CNT_PER_PG - 1)
351 #define CQE_PG(x) (((x) & ~CQE_MAX_IDX_PER_PG) / CQE_CNT_PER_PG) argument
352 #define CQE_IDX(x) ((x) & CQE_MAX_IDX_PER_PG) argument
356 (!!((hdr)->cqe_type_toggle & CQ_BASE_TOGGLE) == \
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/openbmc/linux/drivers/iio/light/
H A Dvcnl4000.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * vcnl4000.c - Support for Vishay VCNL4000/4010/4020/4040/4200 combined ambient
11 * VCNL4000/10/20 (7-bit I2C slave address 0x13)
12 * VCNL4040 (7-bit I2C slave address 0x60)
13 * VCNL4200 (7-bit I2C slave address 0x51)
56 #define VCNL4010_LOW_THR_HI 0x8a /* Low threshold, MSB */
57 #define VCNL4010_LOW_THR_LO 0x8b /* Low threshold, LSB */
58 #define VCNL4010_HIGH_THR_HI 0x8c /* High threshold, MSB */
59 #define VCNL4010_HIGH_THR_LO 0x8d /* High threshold, LSB */
65 #define VCNL4040_PS_THDL_LM 0x06 /* Proximity threshold low */
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/openbmc/linux/drivers/cpuidle/governors/
H A Dmenu.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * menu.c - the menu idle governor
5 * Copyright (C) 2006-2007 Adam Belay <abelay@novell.com>
42 * -----------------------
70 * Repeatable-interval-detector
71 * ----------------------------
78 * threshold value, we use the average of these intervals as prediction.
81 * ---------------------------
90 * This rule-of-thumb is implemented using a performance-multiplier:
157 /* for IO wait tasks (per cpu!) we add 10x each */ in performance_multiplier()
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/openbmc/linux/drivers/gpu/drm/i915/gt/
H A Dintel_rps.c1 // SPDX-License-Identifier: MIT
43 return rps_to_gt(rps)->i915; in rps_to_i915()
48 return rps_to_gt(rps)->uncore; in rps_to_uncore()
55 return &gt->uc.guc.slpc; in rps_to_slpc()
62 return intel_uc_uses_guc_slpc(&gt->uc); in rps_uses_slpc()
67 return mask & ~rps->pm_intrmsk_mbz; in rps_pm_sanitize_mask()
90 last = engine->stats.rps; in rps_timer()
91 engine->stats.rps = dt; in rps_timer()
99 last = rps->pm_timestamp; in rps_timer()
100 rps->pm_timestamp = timestamp; in rps_timer()
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/openbmc/linux/drivers/md/
H A Ddm-ps-historical-service-time.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Keeps a time-weighted exponential moving average of the historical
20 * ns, and the weighting is pre-calculated.
25 #include "dm-path-selector.h"
32 #define DM_MSG_PREFIX "multipath historical-service-time"
70 * fixed_power - compute: x^n, in O(log n) time
72 * @x: base of the power
73 * @frac_bits: fractional bits of @x
74 * @n: power to raise @x to.
77 * function: x^n := x*x*...*x (x multiplied by itself for n times), and
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/openbmc/linux/arch/mips/include/asm/sn/
H A Dioc3.h1 /* SPDX-License-Identifier: GPL-2.0 */
50 u8 fill0[0x151 - 0x142 - 1];
56 u8 fill1[0x159 - 0x153 - 1];
62 u8 fill2[0x16a - 0x15b - 1];
67 u8 fill3[0x170 - 0x16b - 1];
153 u32 pad1[(0x20000 - 0x00154) / 4];
157 u32 pad2[(0x40000 - 0x20180) / 4];
160 u32 ssram[(0x80000 - 0x40000) / 4];
163 0x80000 - Access to the generic devices selected with DEV0
165 0xA0000 - Access to the generic devices selected with DEV1
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/openbmc/linux/drivers/gpu/drm/amd/display/modules/color/
H A Dcolor_gamma.c45 * The idea is that our regions for X points are exponential and currently they all use
47 * is exactly 2x the one at the same index in the previous region. In other words
48 * X[i] = 2 * X[i-NUM_PTS_IN_REGION] for i>=16
49 * The other fact is that (2x)^gamma = 2^gamma * x^gamma
50 * So we compute and save x^gamma for the first 16 regions, and for every next region
66 /* one-time setup of X points */
75 coordinates_x[MAX_HW_POINTS].x = region_size; in setup_x_points_distribution()
76 coordinates_x[MAX_HW_POINTS + 1].x = region_size; in setup_x_points_distribution()
78 for (segment = 6; segment > (6 - NUM_REGIONS); segment--) { in setup_x_points_distribution()
82 seg_offset = (segment + (NUM_REGIONS - 7)) * NUM_PTS_IN_REGION; in setup_x_points_distribution()
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