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/linux-6.15/arch/arm/boot/dts/nvidia/
Dtegra30-cpu-opp.dtsi9 clock-latency-ns = <100000>;
15 clock-latency-ns = <100000>;
21 clock-latency-ns = <100000>;
27 clock-latency-ns = <100000>;
33 clock-latency-ns = <100000>;
39 clock-latency-ns = <100000>;
45 clock-latency-ns = <100000>;
52 clock-latency-ns = <100000>;
59 clock-latency-ns = <100000>;
66 clock-latency-ns = <100000>;
[all …]
Dtegra20-cpu-opp.dtsi9 clock-latency-ns = <400000>;
16 clock-latency-ns = <400000>;
23 clock-latency-ns = <400000>;
29 clock-latency-ns = <400000>;
35 clock-latency-ns = <400000>;
41 clock-latency-ns = <400000>;
48 clock-latency-ns = <400000>;
54 clock-latency-ns = <400000>;
60 clock-latency-ns = <400000>;
66 clock-latency-ns = <400000>;
[all …]
/linux-6.15/arch/sh/lib/
Dmemcpy-sh4.S31 mov r4,r2 ! 5 MT (0 cycles latency)
33 mov.l @(r0,r5),r7 ! 21 LS (2 cycles latency)
40 3: mov.l @(r0,r5),r1 ! 21 LS (latency=2) ! NMLK
41 mov r7, r3 ! 5 MT (latency=0) ! RQPO
46 mov r1,r6 ! 5 MT (latency=0)
50 mov r1, r7 ! 5 MT (latency=0)
57 3: mov.l @(r0,r5),r1 ! 21 LS (latency=2) ! KLMN
58 mov r7,r3 ! 5 MT (latency=0) ! OPQR
64 mov r1,r6 ! 5 MT (latency=0)
67 mov r1,r7 ! 5 MT (latency=0)
[all …]
/linux-6.15/arch/arm64/boot/dts/qcom/
Dmsm8996pro.dtsi26 clock-latency-ns = <200000>;
32 clock-latency-ns = <200000>;
38 clock-latency-ns = <200000>;
44 clock-latency-ns = <200000>;
50 clock-latency-ns = <200000>;
56 clock-latency-ns = <200000>;
62 clock-latency-ns = <200000>;
68 clock-latency-ns = <200000>;
74 clock-latency-ns = <200000>;
80 clock-latency-ns = <200000>;
[all …]
/linux-6.15/tools/perf/pmu-events/arch/x86/meteorlake/
Dmemory.json139 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
146 …s when the latency from first dispatch to completion is greater than 1024 cycles. Reported latenc…
152 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
159 …s when the latency from first dispatch to completion is greater than 128 cycles. Reported latency
165 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
172 …ds when the latency from first dispatch to completion is greater than 16 cycles. Reported latency
178 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
185 …s when the latency from first dispatch to completion is greater than 2048 cycles. Reported latenc…
191 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
198 …s when the latency from first dispatch to completion is greater than 256 cycles. Reported latency
[all …]
/linux-6.15/tools/perf/pmu-events/arch/x86/tigerlake/
Dmemory.json21 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
28 …s when the latency from first dispatch to completion is greater than 128 cycles. Reported latency
33 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
40 …ds when the latency from first dispatch to completion is greater than 16 cycles. Reported latency
45 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
52 …s when the latency from first dispatch to completion is greater than 256 cycles. Reported latency
57 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
64 …ds when the latency from first dispatch to completion is greater than 32 cycles. Reported latency
69 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
76 …ds when the latency from first dispatch to completion is greater than 4 cycles. Reported latency
[all …]
/linux-6.15/Documentation/devicetree/bindings/cpu/
Didle-states.yaml44 Idle state parameters (e.g. entry latency) are platform specific and need to
81 | latency |
83 | latency |
85 |<------- wakeup-latency ------->|
93 event conditions. The abort latency is assumed to be negligible
107 entry-latency: Worst case latency required to enter the idle state. The
108 exit-latency may be guaranteed only after entry-latency has passed.
113 wakeup-latency: Maximum delay between the signaling of a wake-up event and the
115 to be entry-latency + exit-latency.
127 wakeup-delay = exit-latency + max(entry-latency - (now - entry-timestamp), 0)
[all …]
/linux-6.15/tools/tracing/latency/
DMakefile27 LATENCY-COLLECTOR := $(OUTPUT)latency-collector
28 LATENCY-COLLECTOR_IN := $(LATENCY-COLLECTOR)-in.o
40 all: $(LATENCY-COLLECTOR)
63 $(LATENCY-COLLECTOR): $(LATENCY-COLLECTOR_IN)
64 $(QUIET_LINK)$(CC) $(LDFLAGS) -o $(LATENCY-COLLECTOR) $(LATENCY-COLLECTOR_IN) $(EXTLIBS)
66 latency-collector.%: fixdep FORCE
69 $(LATENCY-COLLECTOR_IN): fixdep FORCE
70 make $(build)=latency-collector
79 $(call QUIET_INSTALL,latency-collector)$(INSTALL) $(LATENCY-COLLECTOR) -m 755 $(DESTDIR)$(BINDIR)
80 @$(STRIP) $(DESTDIR)$(BINDIR)/latency-collector
[all …]
/linux-6.15/Documentation/power/
Dpm_qos_interface.rst10 * CPU latency QoS.
12 per-device latency constraints and PM QoS flags.
14 The latency unit used in the PM QoS framework is the microsecond (usec).
20 A global list of CPU latency QoS requests is maintained along with an aggregated
22 to the request list or elements of the list. For CPU latency QoS, the
32 Will insert an element into the CPU latency QoS list with the target value.
49 Returns the aggregated value for the CPU latency QoS.
53 CPU latency QoS list.
56 Adds a notification callback function to the CPU latency QoS. The callback is
57 called when the aggregated value for the CPU latency QoS is changed.
[all …]
/linux-6.15/tools/perf/pmu-events/arch/x86/graniterapids/
Dmemory.json68 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
75 …s when the latency from first dispatch to completion is greater than 1024 cycles. Reported latenc…
80 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
87 …s when the latency from first dispatch to completion is greater than 128 cycles. Reported latency
92 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
99 …ds when the latency from first dispatch to completion is greater than 16 cycles. Reported latency
104 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
111 …s when the latency from first dispatch to completion is greater than 2048 cycles. Reported latenc…
116 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
123 …s when the latency from first dispatch to completion is greater than 256 cycles. Reported latency
[all …]
/linux-6.15/tools/perf/pmu-events/arch/x86/arrowlake/
Dmemory.json159 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
166 …s when the latency from first dispatch to completion is greater than 1024 cycles. Reported latenc…
172 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
179 …s when the latency from first dispatch to completion is greater than 128 cycles. Reported latency
185 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
192 …ds when the latency from first dispatch to completion is greater than 16 cycles. Reported latency
198 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
205 …s when the latency from first dispatch to completion is greater than 2048 cycles. Reported latenc…
211 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
218 …s when the latency from first dispatch to completion is greater than 256 cycles. Reported latency
[all …]
/linux-6.15/tools/perf/pmu-events/arch/x86/alderlake/
Dmemory.json129 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
136 …s when the latency from first dispatch to completion is greater than 1024 cycles. Reported latenc…
142 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
149 …s when the latency from first dispatch to completion is greater than 128 cycles. Reported latency
155 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
162 …ds when the latency from first dispatch to completion is greater than 16 cycles. Reported latency
168 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
175 …s when the latency from first dispatch to completion is greater than 256 cycles. Reported latency
181 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
188 …ds when the latency from first dispatch to completion is greater than 32 cycles. Reported latency
[all …]
/linux-6.15/tools/perf/pmu-events/arch/x86/lunarlake/
Dmemory.json159 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
166 …s when the latency from first dispatch to completion is greater than 1024 cycles. Reported latenc…
172 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
179 …s when the latency from first dispatch to completion is greater than 128 cycles. Reported latency
185 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
192 …ds when the latency from first dispatch to completion is greater than 16 cycles. Reported latency
198 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
205 …s when the latency from first dispatch to completion is greater than 2048 cycles. Reported latenc…
211 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
218 …s when the latency from first dispatch to completion is greater than 256 cycles. Reported latency
[all …]
/linux-6.15/tools/perf/pmu-events/arch/x86/emeraldrapids/
Dmemory.json59 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
66 …s when the latency from first dispatch to completion is greater than 1024 cycles. Reported latenc…
71 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
78 …s when the latency from first dispatch to completion is greater than 128 cycles. Reported latency
83 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
90 …ds when the latency from first dispatch to completion is greater than 16 cycles. Reported latency
95 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
102 …s when the latency from first dispatch to completion is greater than 256 cycles. Reported latency
107 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
114 …ds when the latency from first dispatch to completion is greater than 32 cycles. Reported latency
[all …]
/linux-6.15/tools/perf/pmu-events/arch/x86/sapphirerapids/
Dmemory.json59 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
66 …s when the latency from first dispatch to completion is greater than 1024 cycles. Reported latenc…
71 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
78 …s when the latency from first dispatch to completion is greater than 128 cycles. Reported latency
83 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
90 …ds when the latency from first dispatch to completion is greater than 16 cycles. Reported latency
95 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
102 …s when the latency from first dispatch to completion is greater than 256 cycles. Reported latency
107 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
114 …ds when the latency from first dispatch to completion is greater than 32 cycles. Reported latency
[all …]
/linux-6.15/kernel/
Dlatencytop.c3 * latencytop.c: Latency display infrastructure
10 * CONFIG_LATENCYTOP enables a kernel latency tracking infrastructure that is
11 * used by the "latencytop" userspace tool. The latency that is tracked is not
12 * the 'traditional' interrupt latency (which is primarily caused by something
13 * else consuming CPU), but instead, it is the latency an application encounters
17 * 1) System level latency
18 * 2) Per process latency
20 * The latency is stored in fixed sized data structures in an accumulated form;
21 * if the "same" latency cause is hit twice, this will be tracked as one entry
22 * in the data structure. Both the count, total accumulated latency and maximum
[all …]
/linux-6.15/arch/arm64/boot/dts/rockchip/
Drk3588-opp.dtsi11 clock-latency-ns = <40000>;
16 clock-latency-ns = <40000>;
21 clock-latency-ns = <40000>;
27 clock-latency-ns = <40000>;
32 clock-latency-ns = <40000>;
43 clock-latency-ns = <40000>;
48 clock-latency-ns = <40000>;
53 clock-latency-ns = <40000>;
58 clock-latency-ns = <40000>;
63 clock-latency-ns = <40000>;
[all …]
/linux-6.15/tools/perf/Documentation/
Dcpu-and-latency-overheads.txt1 CPU and latency overheads
9 'latency' columns for CPU and wall-clock time correspondingly).
12 latency overhead is useful to improve 'latency'. It's important to understand
16 latency of a single interactive program build.
21 While the latency overhead is: 'foo' - 90%, 'bar' - 10%. If we try to optimize
26 By default, perf shows only CPU overhead. To show latency overhead, use
27 'perf record --latency' and 'perf report':
30 Overhead Latency Command
38 To sort by latency overhead, use 'perf report --latency':
41 Latency Overhead Command
[all …]
/linux-6.15/tools/perf/pmu-events/arch/x86/ivybridge/
Dmemory.json11 "BriefDescription": "Loads with latency value being above 128",
18 "PublicDescription": "Loads with latency value being above 128.",
23 "BriefDescription": "Loads with latency value being above 16",
30 "PublicDescription": "Loads with latency value being above 16.",
35 "BriefDescription": "Loads with latency value being above 256",
42 "PublicDescription": "Loads with latency value being above 256.",
47 "BriefDescription": "Loads with latency value being above 32",
54 "PublicDescription": "Loads with latency value being above 32.",
59 "BriefDescription": "Loads with latency value being above 4",
66 "PublicDescription": "Loads with latency value being above 4.",
[all …]
/linux-6.15/tools/tracing/rtla/src/
Dtimerlat.bpf.c84 unsigned long long latency, in update_summary() argument
91 map_set(map, SUMMARY_CURRENT, latency); in update_summary()
97 if (latency > map_get(map, SUMMARY_MAX)) in update_summary()
98 map_set(map, SUMMARY_MAX, latency); in update_summary()
100 if (latency < map_get(map, SUMMARY_MIN) || map_get(map, SUMMARY_COUNT) == 0) in update_summary()
101 map_set(map, SUMMARY_MIN, latency); in update_summary()
104 map_set(map, SUMMARY_SUM, map_get(map, SUMMARY_SUM) + latency); in update_summary()
121 unsigned long long latency, latency_us; in handle_timerlat_sample() local
127 latency = tp_args->timer_latency / output_divisor; in handle_timerlat_sample()
129 bucket = latency / bucket_size; in handle_timerlat_sample()
[all …]
/linux-6.15/drivers/char/tpm/st33zp24/
Dspi.c41 * Between command and response, there are latency byte (up to 15
47 * some latency byte before the answer is available (max 15).
60 int latency; member
119 memset(&phy->tx_buf[total_length], TPM_DUMMY_BYTE, phy->latency); in st33zp24_spi_send()
121 spi_xfer.len = total_length + phy->latency; in st33zp24_spi_send()
125 ret = phy->rx_buf[total_length + phy->latency - 1]; in st33zp24_spi_send()
155 phy->latency + tpm_size); in st33zp24_spi_read8_reg()
157 spi_xfer.len = total_length + phy->latency + tpm_size; in st33zp24_spi_read8_reg()
162 ret = phy->rx_buf[total_length + phy->latency - 1]; in st33zp24_spi_read8_reg()
164 memcpy(tpm_data, phy->rx_buf + total_length + phy->latency, in st33zp24_spi_read8_reg()
[all …]
/linux-6.15/arch/arm/boot/dts/samsung/
Dexynos4212.dtsi65 clock-latency-ns = <200000>;
70 clock-latency-ns = <200000>;
75 clock-latency-ns = <200000>;
80 clock-latency-ns = <200000>;
85 clock-latency-ns = <200000>;
90 clock-latency-ns = <200000>;
95 clock-latency-ns = <200000>;
101 clock-latency-ns = <200000>;
106 clock-latency-ns = <200000>;
111 clock-latency-ns = <200000>;
[all …]
/linux-6.15/tools/perf/pmu-events/arch/x86/icelake/
Dmemory.json84 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
91 …s when the latency from first dispatch to completion is greater than 128 cycles. Reported latency
96 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
103 …ds when the latency from first dispatch to completion is greater than 16 cycles. Reported latency
108 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
115 …s when the latency from first dispatch to completion is greater than 256 cycles. Reported latency
120 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
127 …ds when the latency from first dispatch to completion is greater than 32 cycles. Reported latency
132 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
139 …ds when the latency from first dispatch to completion is greater than 4 cycles. Reported latency
[all …]
/linux-6.15/tools/perf/pmu-events/arch/x86/rocketlake/
Dmemory.json84 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
91 …s when the latency from first dispatch to completion is greater than 128 cycles. Reported latency
96 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
103 …ds when the latency from first dispatch to completion is greater than 16 cycles. Reported latency
108 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
115 …s when the latency from first dispatch to completion is greater than 256 cycles. Reported latency
120 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
127 …ds when the latency from first dispatch to completion is greater than 32 cycles. Reported latency
132 …"BriefDescription": "Counts randomly selected loads when the latency from first dispatch to comple…
139 …ds when the latency from first dispatch to completion is greater than 4 cycles. Reported latency
[all …]
/linux-6.15/Documentation/devicetree/bindings/power/
Ddomain-idle-state.yaml31 entry-latency-us:
33 The worst case latency in microseconds required to enter the idle
34 state. Note that, the exit-latency-us duration may be guaranteed only
35 after the entry-latency-us has passed.
37 exit-latency-us:
39 The worst case latency in microseconds required to exit the idle
64 - entry-latency-us
65 - exit-latency-us
76 entry-latency-us = <20>;
77 exit-latency-us = <40>;

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