| /Linux-v6.1/Documentation/devicetree/bindings/cpu/ |
| D | idle-states.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/cpu/idle-states.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
11 - Anup Patel <anup@brainfault.org>
15 1 - Introduction
18 ARM and RISC-V systems contain HW capable of managing power consumption
19 dynamically, where cores can be put in different low-power states (ranging
22 run-time, can be specified through device tree bindings representing the
[all …]
|
| /Linux-v6.1/Documentation/devicetree/bindings/power/ |
| D | domain-idle-state.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/power/domain-idle-state.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Ulf Hansson <ulf.hansson@linaro.org>
18 const: domain-idle-states
21 "^(cpu|cluster|domain)-":
29 const: domain-idle-state
31 entry-latency-us:
33 The worst case latency in microseconds required to enter the idle
[all …]
|
| D | power-domain.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/power/power-domain.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Rafael J. Wysocki <rjw@rjwysocki.net>
11 - Kevin Hilman <khilman@kernel.org>
12 - Ulf Hansson <ulf.hansson@linaro.org>
24 \#power-domain-cells property in the PM domain provider node.
28 pattern: "^(power-controller|power-domain)([@-].*)?$"
30 domain-idle-states:
[all …]
|
| /Linux-v6.1/tools/tracing/rtla/src/ |
| D | timerlat_top.c | 1 // SPDX-License-Identifier: GPL-2.0
58 * timerlat_free_top - free runtime data
63 free(data->cpu_data); in timerlat_free_top()
68 * timerlat_alloc_histogram - alloc runtime data
79 data->nr_cpus = nr_cpus; in timerlat_alloc_top()
82 data->cpu_data = calloc(1, sizeof(*data->cpu_data) * nr_cpus); in timerlat_alloc_top()
83 if (!data->cpu_data) in timerlat_alloc_top()
88 data->cpu_data[cpu].min_irq = ~0; in timerlat_alloc_top()
89 data->cpu_data[cpu].min_thread = ~0; in timerlat_alloc_top()
100 * timerlat_hist_update - record a new timerlat occurent on cpu, updating data
[all …]
|
| D | timerlat_hist.c | 1 // SPDX-License-Identifier: GPL-2.0
69 * timerlat_free_histogram - free runtime data
77 for (cpu = 0; cpu < data->nr_cpus; cpu++) { in timerlat_free_histogram()
78 if (data->hist[cpu].irq) in timerlat_free_histogram()
79 free(data->hist[cpu].irq); in timerlat_free_histogram()
81 if (data->hist[cpu].thread) in timerlat_free_histogram()
82 free(data->hist[cpu].thread); in timerlat_free_histogram()
86 if (data->hist) in timerlat_free_histogram()
87 free(data->hist); in timerlat_free_histogram()
93 * timerlat_alloc_histogram - alloc runtime data
[all …]
|
| /Linux-v6.1/Documentation/devicetree/bindings/thermal/ |
| D | thermal-idle.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/thermal/thermal-idle.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Daniel Lezcano <daniel.lezcano@linaro.org>
22 const: thermal-idle
24 A thermal-idle node describes the idle cooling device properties to
27 '#cooling-cells':
31 the cooling-maps reference. The first cell is the minimum cooling state
34 duration-us:
[all …]
|
| /Linux-v6.1/Documentation/tools/rtla/ |
| D | common_timerlat_options.rst | 1 **-a**, **--auto** *us*
4 while debugging the system. It is equivalent to use **-T** *us* **-s** *us*
5 **-t**. By default, *timerlat* tracer uses FIFO:95 for *timerlat* threads,
6 thus equilavent to **-P** *f:95*.
8 **-p**, **--period** *us*
12 **-i**, **--irq** *us*
14 Stop trace if the *IRQ* latency is higher than the argument in us.
16 **-T**, **--thread** *us*
18 Stop trace if the *Thread* latency is higher than the argument in us.
20 **-s**, **--stack** *us*
[all …]
|
| /Linux-v6.1/drivers/cpuidle/ |
| D | dt_idle_states.c | 1 // SPDX-License-Identifier: GPL-2.0-only
9 #define pr_fmt(fmt) "DT idle-states: " fmt
33 idle_state->enter = match_id->data; in init_state_node()
39 idle_state->enter_s2idle = match_id->data; in init_state_node()
41 err = of_property_read_u32(state_node, "wakeup-latency-us", in init_state_node()
42 &idle_state->exit_latency); in init_state_node()
46 err = of_property_read_u32(state_node, "entry-latency-us", in init_state_node()
49 pr_debug(" * %pOF missing entry-latency-us property\n", in init_state_node()
51 return -EINVAL; in init_state_node()
54 err = of_property_read_u32(state_node, "exit-latency-us", in init_state_node()
[all …]
|
| D | cpuidle-pseries.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * cpuidle-pseries - idle state cpuidle driver.
78 * were soft-disabled in check_and_cede_processor()
92 * "ibm,get-systems-parameter" RTAS call with the token
98 * table with all the parameters to ibm,get-system-parameters.
99 * CEDE_LATENCY_TOKEN corresponds to the token value for Cede Latency
105 * If the platform supports the cede latency settings information system
109 * a. The first byte is the length “N” of each cede latency setting record minus
112 * b. For each supported cede latency setting a cede latency setting record
115 * -----------------------------
[all …]
|
| /Linux-v6.1/Documentation/devicetree/bindings/arm/ |
| D | psci.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
15 processors") can be used by Linux to initiate various CPU-centric power
25 r0 => 32-bit Function ID / return value
26 {r1 - r3} => Parameters
40 - description:
44 - description:
52 - const: arm,psci-0.2
[all …]
|
| D | cpu-capacity.txt | 6 1 - Introduction
15 2 - CPU capacity definition
19 heterogeneity. Such heterogeneity can come from micro-architectural differences
23 capture a first-order approximation of the relative performance of CPUs.
29 * A "single-threaded" or CPU affine benchmark
43 3 - capacity-dmips-mhz
46 capacity-dmips-mhz is an optional cpu node [1] property: u32 value
51 capacity-dmips-mhz property is all-or-nothing: if it is specified for a cpu
54 available, final capacities are calculated by directly using capacity-dmips-
58 4 - Examples
[all …]
|
| /Linux-v6.1/Documentation/devicetree/bindings/arm/msm/ |
| D | qcom,idle-state.txt | 3 ARM provides idle-state node to define the cpuidle states, as defined in [1].
4 cpuidle-qcom is the cpuidle driver for Qualcomm SoCs and uses these idle
5 states. Idle states have different enter/exit latency and residency values.
6 The idle states supported by the QCOM SoC are defined as -
31 state. Retention may have a slightly higher latency than Standby.
44 code in the EL for the SoC. On SoCs with write-back L1 cache, the cache has to
50 be flushed, system bus, clocks - lowered, and SoC main XO clock gated and
52 power modes possible at this state is vast, the exit latency and the residency
58 The idle-state for QCOM SoCs are distinguished by the compatible property of
59 the idle-states device node.
[all …]
|
| /Linux-v6.1/tools/testing/selftests/ftrace/test.d/preemptirq/ |
| D | irqsoff_tracer.tc | 2 # SPDX-License-Identifier: GPL-2.0
46 grep -q "tracer: preemptoff" trace || fail
49 egrep -q "5.....us : <stack trace>" trace || fail
51 # Check for 500ms of latency
52 egrep -q "latency: 5..... us" trace || fail
69 grep -q "tracer: irqsoff" trace || fail
72 egrep -q "5.....us : <stack trace>" trace || fail
74 # Check for 500ms of latency
75 egrep -q "latency: 5..... us" trace || fail
78 exit 0
|
| /Linux-v6.1/drivers/cpuidle/governors/ |
| D | menu.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * menu.c - the menu idle governor
5 * Copyright (C) 2006-2007 Adam Belay <abelay@novell.com>
36 * 3) Latency tolerance (from pmqos infrastructure)
40 * -----------------------
41 * C state entry and exit have an energy cost, and a certain amount of time in
43 * provides us this duration in the "target_residency" field. So all that we
68 * Repeatable-interval-detector
69 * ----------------------------
79 * ---------------------------
[all …]
|
| /Linux-v6.1/tools/testing/selftests/dma/ |
| D | dma_map_benchmark.c | 1 // SPDX-License-Identifier: GPL-2.0-only
29 int threads = 1, seconds = 20, node = -1; in main()
38 while ((opt = getopt(argc, argv, "t:s:n:b:d:x:g:")) != -1) { in main()
62 return -1; in main()
67 fprintf(stderr, "invalid number of threads, must be in 1-%d\n", in main()
69 exit(1); in main()
73 fprintf(stderr, "invalid number of seconds, must be in 1-%d\n", in main()
75 exit(1); in main()
79 fprintf(stderr, "invalid transmit delay, must be in 0-%ld\n", in main()
81 exit(1); in main()
[all …]
|
| /Linux-v6.1/tools/testing/selftests/bpf/benchs/ |
| D | bench_local_storage_rcu_tasks_trace.c | 1 // SPDX-License-Identifier: GPL-2.0
85 fprintf(stderr, "benchmark doesn't support multi-producer!\n"); in validate()
86 exit(1); in validate()
89 fprintf(stderr, "benchmark doesn't support multi-consumer!\n"); in validate()
90 exit(1); in validate()
96 exit(1); in validate()
107 return -1; in kthread_pid_ticks()
125 exit(1); in kthread_pid_ticks()
182 if (!bpf_program__attach(ctx.skel->progs.get_local)) { in local_storage_tasks_trace_setup()
187 if (!bpf_program__attach(ctx.skel->progs.pregp_step)) { in local_storage_tasks_trace_setup()
[all …]
|
| /Linux-v6.1/Documentation/trace/ |
| D | ftrace.rst | 2 ftrace - Function Tracer
13 - Written for: 2.6.28-rc2
14 - Updated for: 3.10
15 - Updated for: 4.13 - Copyright 2017 VMware Inc. Steven Rostedt
16 - Converted to rst format - Changbin Du <changbin.du@intel.com>
19 ------------
24 performance issues that take place outside of user-space.
28 There's latency tracing to examine what occurs between interrupts
41 ----------------------
43 See Documentation/trace/ftrace-design.rst for details for arch porters and such.
[all …]
|
| /Linux-v6.1/arch/arm64/boot/dts/arm/ |
| D | juno-r2.dts | 9 /dts-v1/;
11 #include <dt-bindings/interrupt-controller/arm-gic.h>
12 #include <dt-bindings/arm/coresight-cti-dt.h>
13 #include "juno-base.dtsi"
14 #include "juno-cs-r1r2.dtsi"
18 compatible = "arm,juno-r2", "arm,juno", "arm,vexpress";
19 interrupt-parent = <&gic>;
20 #address-cells = <2>;
21 #size-cells = <2>;
28 stdout-path = "serial0:115200n8";
[all …]
|
| D | juno.dts | 4 * Copyright (c) 2013-2014 ARM Ltd.
9 /dts-v1/;
11 #include <dt-bindings/interrupt-controller/arm-gic.h>
12 #include <dt-bindings/arm/coresight-cti-dt.h>
13 #include "juno-base.dtsi"
18 interrupt-parent = <&gic>;
19 #address-cells = <2>;
20 #size-cells = <2>;
27 stdout-path = "serial0:115200n8";
31 compatible = "arm,psci-0.2";
[all …]
|
| D | juno-r1.dts | 9 /dts-v1/;
11 #include <dt-bindings/interrupt-controller/arm-gic.h>
12 #include <dt-bindings/arm/coresight-cti-dt.h>
13 #include "juno-base.dtsi"
14 #include "juno-cs-r1r2.dtsi"
18 compatible = "arm,juno-r1", "arm,juno", "arm,vexpress";
19 interrupt-parent = <&gic>;
20 #address-cells = <2>;
21 #size-cells = <2>;
28 stdout-path = "serial0:115200n8";
[all …]
|
| /Linux-v6.1/arch/arm64/boot/dts/qcom/ |
| D | sdm630.dtsi | 1 // SPDX-License-Identifier: BSD-3-Clause
7 #include <dt-bindings/clock/qcom,gcc-sdm660.h>
8 #include <dt-bindings/clock/qcom,gpucc-sdm660.h>
9 #include <dt-bindings/clock/qcom,mmcc-sdm660.h>
10 #include <dt-bindings/clock/qcom,rpmcc.h>
11 #include <dt-bindings/interconnect/qcom,sdm660.h>
12 #include <dt-bindings/power/qcom-rpmpd.h>
13 #include <dt-bindings/gpio/gpio.h>
14 #include <dt-bindings/interrupt-controller/arm-gic.h>
15 #include <dt-bindings/soc/qcom,apr.h>
[all …]
|
| D | sdm845-cheza.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
8 #include <dt-bindings/input/input.h>
9 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
25 stdout-path = "serial0:115200n8";
29 compatible = "pwm-backlight";
31 enable-gpios = <&tlmm 37 GPIO_ACTIVE_HIGH>;
32 power-supply = <&ppvar_sys>;
33 pinctrl-names = "default";
34 pinctrl-0 = <&ap_edp_bklten>;
37 /* FIXED REGULATORS - parents above children */
[all …]
|
| /Linux-v6.1/arch/arm64/boot/dts/mediatek/ |
| D | mt8186.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 * Author: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
6 /dts-v1/;
7 #include <dt-bindings/clock/mt8186-clk.h>
8 #include <dt-bindings/interrupt-controller/arm-gic.h>
9 #include <dt-bindings/interrupt-controller/irq.h>
10 #include <dt-bindings/pinctrl/mt8186-pinfunc.h>
11 #include <dt-bindings/power/mt8186-power.h>
12 #include <dt-bindings/phy/phy.h>
13 #include <dt-bindings/reset/mt8186-resets.h>
[all …]
|
| /Linux-v6.1/arch/arm64/boot/dts/hisilicon/ |
| D | hi3660.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
8 #include <dt-bindings/interrupt-controller/arm-gic.h>
9 #include <dt-bindings/clock/hi3660-clock.h>
10 #include <dt-bindings/thermal/thermal.h>
14 interrupt-parent = <&gic>;
15 #address-cells = <2>;
16 #size-cells = <2>;
19 compatible = "arm,psci-0.2";
24 #address-cells = <2>;
25 #size-cells = <0>;
[all …]
|
| /Linux-v6.1/tools/tracing/latency/ |
| D | latency-collector.c | 1 // SPDX-License-Identifier: GPL-2.0
44 C(FUNC_TR, "function-trace"), \
45 C(DISP_GR, "display-graph"), \
134 "No latency tracers are supported by your kernel!\n";
271 count -= r; in write_or_die()
519 future->tv_sec += time_us / USEC_PER_SEC; in get_time_in_future()
520 nsec = future->tv_nsec + (time_us * NSEC_PER_USEC) % NSEC_PER_SEC; in get_time_in_future()
522 future->tv_nsec = nsec % NSEC_PER_SEC; in get_time_in_future()
523 future->tv_sec += 1; in get_time_in_future()
532 if (now.tv_sec > time->tv_sec) in time_has_passed()
[all …]
|
