| /linux/Documentation/tools/rtla/ |
| H A D | rtla-hwnoise.rst | 7 Detect and quantify hardware-related noise
23 noise is allowed.
41 The tool is set to detect any noise higher than *one microsecond*,
46 Hardware-related Noise
48 …CPU Period Runtime Noise % CPU Aval Max Noise Max Single HW NMI
60 the tool effectively runs on the CPU. The *Noise* column is the sum of
61 all noise that the tool observed, and the *% CPU Aval* is the relation
62 between the *Runtime* and *Noise*.
64 The *Max Noise* column is the maximum hardware noise the tool detected in a
65 single period, and the *Max Single* is the maximum single noise seen.
[all …]
|
| H A D | rtla-osnoise.rst | 5 Measure the operating system noise
20 a summary of the noise of the operating system, including the counters of
22 for each noise via the **osnoise:** tracepoints. The **rtla osnoise top**
24 The **rtla osnoise hist** mode displays information about the noise using
|
| H A D | rtla-osnoise-top.rst | 5 Display a summary of the operating system noise
42 Operating System Noise
44 …CPU Period Runtime Noise % CPU Aval Max Noise Max Single HW NM…
|
| /linux/Documentation/trace/ |
| H A D | osnoise-tracer.rst | 6 Noise (*osnoise*) refers to the interference experienced by an application
8 NMIs, IRQs, SoftIRQs, and any other system thread can cause noise to the
9 system. Moreover, hardware-related jobs can also cause noise, for example,
13 source of noise: *hardware noise*.
36 events. When a noise happens without any interference from the operating
37 system level, the hardware noise counter increases, pointing to a
38 hardware-related noise. In this way, osnoise can account for any
40 prints the sum of all noise, the max single noise, the percentage of CPU
41 available for the thread, and the counters for the noise sources.
64 …# |||| RUNTIME NOISE % OF CPU NOISE +-------…
[all …]
|
| /linux/drivers/staging/media/atomisp/pci/isp/kernels/ynr/ynr_1.0/ |
| H A D | ia_css_ynr_types.h | 20 * CSS-API header file for Noise Reduction (BNR) and YCC Noise Reduction (YNR,CNR).
23 /* Configuration used by Bayer Noise Reduction (BNR) and
24 * YCC Noise Reduction (YNR,CNR).
32 ia_css_u0_16 bnr_gain; /** Strength of noise reduction (BNR).
35 ia_css_u0_16 ynr_gain; /** Strength of noise reduction (YNR).
|
| /linux/drivers/staging/media/atomisp/pci/isp/kernels/fpn/fpn_1.0/ |
| H A D | ia_css_fpn_types.h | 20 * CSS-API header file for Fixed Pattern Noise parameters.
23 /* Fixed Pattern Noise table.
25 * This contains the fixed patterns noise values
37 s16 *data; /** Table content (fixed patterns noise).
|
| /linux/Documentation/sound/soc/ |
| H A D | pops-clicks.rst | 8 powered up and causes a popping noise on the speakers).
48 Zipper Noise
50 An unwanted zipper noise can occur within the audio playback or capture stream
51 when a volume control is changed near its maximum gain value. The zipper noise
|
| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-bus-iio-adc-mcp3564 | 32 conversions, which is on the order of magnitude of the noise
45 1/f noise into the system that can be modulated with the
49 greatly reduces (cancels out) the 1/f noise and cancels the
51 the system is not affected by this 1/f noise component of the
|
| /linux/drivers/staging/media/ipu3/include/uapi/ |
| H A D | intel-ipu3.h | 619 /* Bayer Noise Reduction related structs */
662 * struct ipu3_uapi_bnr_static_config_thr_coeffs_config - Noise model
663 * coefficients that controls noise threshold
679 * Threshold used to distinguish between noise and details.
698 * Parameters for noise model (NM) adaptation of BNR due to shading correction.
742 * dependent on de-noise threshold calculated by algorithm.
778 * beta and gamma parameter define the strength of the noise removal filter.
791 * @bnr_enable: Bayer noise removal enable control, 0 - disable, 1 - enable.
844 * @dn_detect_ctrl: detect and remove noise.
1883 /* Chroma Noise Reduction */
[all …]
|
| /linux/Documentation/admin-guide/media/ |
| H A D | ipu3.rst | 246 high quality images. Besides, "STILL" mode need XNR3 to do noise reduction,
463 g [label="Bayer Noise Reduction"]
470 n [label="Chromatic Noise Reduction"]
504 BNR Bayer noise reduction block removes image noise by
507 ANR Advanced Noise Reduction is a block based algorithm
508 that performs noise reduction in the Bayer domain. The
533 CHNR Chroma noise reduction
535 performs noise reduction by cleaning the high
536 frequency noise.
540 XNR3 eXtreme Noise Reduction V3 is the third revision of
[all …]
|
| /linux/drivers/staging/media/atomisp/pci/ |
| H A D | atomisp_compat_ioctl32.h | 131 compat_uptr_t tnr_config; /* Temporal Noise Reduction */
133 compat_uptr_t ynr_config; /* Y(Luma) Noise Reduction */
136 compat_uptr_t cnr_config; /* Chroma Noise Reduction */
145 compat_uptr_t nr_config; /* Noise Reduction config */
149 compat_uptr_t anr_config; /* Advanced Noise Reduction */
151 compat_uptr_t xnr_config; /* eXtra Noise Reduction */
|
| /linux/drivers/net/wireless/ath/ath9k/ |
| H A D | calib.c | 72 s8 noise = ATH_DEFAULT_NOISE_FLOOR; in ath9k_hw_getchan_noise() local
78 noise += delta; in ath9k_hw_getchan_noise()
80 return noise; in ath9k_hw_getchan_noise()
130 * Normally we limit the average noise floor by the in ath9k_hw_update_nfcal_hist_buffer()
142 * If the noise floor seems normal for all chains, assume that in ath9k_hw_update_nfcal_hist_buffer()
269 /* Try to get calibrated noise floor value */ in ath9k_hw_loadnf()
349 * of next noise floor calibration the baseband does. in ath9k_hw_loadnf()
422 "noise floor failed detected; detected %d, threshold %d\n", in ath9k_hw_getnf()
435 ah->noise = ath9k_hw_getchan_noise(ah, chan, chan->noisefloor); in ath9k_hw_getnf()
470 * Triggering a noise floor calibration at this point helps the in ath9k_hw_bstuck_nfcal()
|
| /linux/include/linux/input/ |
| H A D | cma3000.h | 26 * @fuzz_x: Noise on X Axis
27 * @fuzz_y: Noise on Y Axis
28 * @fuzz_z: Noise on Z Axis
|
| /linux/kernel/trace/ |
| H A D | trace_osnoise.c | 3 * OS Noise Tracer: computes the OS Noise suffered by a running thread.
324 u64 noise; /* noise */ member
325 u64 max_sample; /* max single noise sample */
446 seq_puts(s, " NOISE %% OF CPU NOISE +-----------------------------+\n"); in print_osnoise_headers()
470 seq_puts(s, " NOISE %% OF CPU NOISE +-----------------------------+\n"); in print_osnoise_headers()
512 entry->noise = sample->noise; in __trace_osnoise_sample()
880 * occurrence, compute the noise caused by the NMI, and to remove the noise
943 * Computes the duration of the IRQ noise, and trace it. Also discounts the
944 * interference from other sources of noise could be currently being accounted.
1074 * Computes the duration of the softirq noise, and trace it. Also discounts the
[all …]
|
| /linux/include/linux/mfd/ |
| H A D | ac100.h | 99 #define AC100_ADC_DAP_N_TH 0x8e /* Noise Threshold */
100 #define AC100_ADC_DAP_L_H_N_A_C 0x8f /* Left High Noise Avg. Coef */
101 #define AC100_ADC_DAP_L_L_N_A_C 0x90 /* Left Low Noise Avg. Coef */
102 #define AC100_ADC_DAP_R_H_N_A_C 0x91 /* Right High Noise Avg. Coef */
103 #define AC100_ADC_DAP_R_L_N_A_C 0x92 /* Right Low Noise Avg. Coef */
|
| /linux/drivers/misc/echo/ |
| H A D | echo.h | 52 to adapt best to the strongest parts of a signal. If the signal is white noise,
69 If the adaption is performed while transmitting noise (or something fairly
70 noise like, such as voice) the adaption works very well. If the adaption is
86 noise may dominate and disturb the adaption process. If we can ensure that the
166 /* Parameters for the optional Hoth noise generator */
|
| /linux/drivers/media/pci/cx88/ |
| H A D | cx88-dsp.c | 142 /* The last 192 samples are enough for noise detection */ in noise_magnitude()
159 s32 carrier, stereo, dual, noise; in detect_a2_a2m_eiaj() local
189 noise = noise_magnitude(x, N, FREQ_NOISE_START, FREQ_NOISE_END); in detect_a2_a2m_eiaj()
192 "detect a2/a2m/eiaj: carrier=%d, stereo=%d, dual=%d, noise=%d\n", in detect_a2_a2m_eiaj()
193 carrier, stereo, dual, noise); in detect_a2_a2m_eiaj()
208 * so we probably don't need noise detection in detect_a2_a2m_eiaj()
216 (noise < 10) && in detect_a2_a2m_eiaj()
|
| /linux/drivers/media/dvb-frontends/ |
| H A D | or51132.c | 229 /* Auto CH, Auto NTSC rej, MPEGser, MPEG2tr, phase noise-high */ in or51132_setmode()
237 Auto-deinterleave; MPEGser, MPEG2tr, phase noise-high in or51132_setmode()
461 int noise, reg; in or51132_read_snr() local
467 noise = or51132_readreg(state, 0x02); in or51132_read_snr()
468 if (noise < 0) { in or51132_read_snr()
472 dprintk("read_snr noise (%d)\n", noise); in or51132_read_snr()
500 /* Calculate SNR using noise, c, and NTSC rejection correction */ in or51132_read_snr()
501 state->snr = calculate_snr(noise, c) - usK; in or51132_read_snr()
504 dprintk("%s: noise = 0x%08x, snr = %d.%02d dB\n", __func__, noise, in or51132_read_snr()
|
| /linux/drivers/staging/media/atomisp/include/linux/ |
| H A D | atomisp.h | 71 /* Configuration used by Bayer noise reduction and YCC noise reduction */
73 /* [gain] Strength of noise reduction for Bayer NR (Used by Bayer NR) */
75 /* [gain] Strength of noise reduction for YCC NR (Used by YCC NR) */
85 /* Temporal noise reduction configuration */
290 /* De pixel noise configuration */
417 struct atomisp_tnr_config *tnr_config; /* Temporal Noise Reduction */
419 struct atomisp_ynr_config *ynr_config; /* Y(Luma) Noise Reduction */
422 struct atomisp_cnr_config *cnr_config; /* Chroma Noise Reduction */
431 struct atomisp_nr_config *nr_config; /* Noise Reduction config */
435 struct atomisp_anr_config *anr_config; /* Advanced Noise Reduction */
[all …]
|
| /linux/include/uapi/linux/ |
| H A D | rkisp1-config.h | 649 * @thres: threshold used for minimizing the influence of noise
663 * @RKISP1_CIF_ISP_DPF_GAIN_USAGE_NF_GAINS: use only the noise function gains from
666 * @RKISP1_CIF_ISP_DPF_GAIN_USAGE_NF_LSC_GAINS: use the noise function gains and the
695 * enum rkisp1_cif_isp_dpf_nll_scale_mode - dpf noise level scale mode
705 * struct rkisp1_cif_isp_dpf_nll - Noise level lookup
707 * @coeff: Noise level Lookup coefficient
708 * @scale_mode: dpf noise level scale mode (from enum rkisp1_cif_isp_dpf_nll_scale_mode)
745 * struct rkisp1_cif_isp_dpf_gain - Noise function Configuration
748 * @nf_r_gain: Noise function Gain that replaces the AWB gain for red pixels
749 * @nf_b_gain: Noise functio
[all...] |
| /linux/drivers/net/wireless/ath/ |
| H A D | spectral_common.h | 56 s8 noise; member
100 __be16 noise; member
124 __be32 noise; member
|
| /linux/sound/soc/codecs/ |
| H A D | wm8997.c | 250 ARIZONA_MIXER_CONTROLS("Noise", ARIZONA_NOISEMIX_INPUT_1_SOURCE),
252 SOC_SINGLE_TLV("Noise Generator Volume", ARIZONA_COMFORT_NOISE_GENERATOR,
296 SOC_SINGLE("Noise Gate Switch", ARIZONA_NOISE_GATE_CONTROL,
298 SOC_SINGLE_TLV("Noise Gate Threshold Volume", ARIZONA_NOISE_GATE_CONTROL,
300 SOC_ENUM("Noise Gate Hold", arizona_ng_hold),
345 ARIZONA_MIXER_ENUMS(Noise, ARIZONA_NOISEMIX_INPUT_1_SOURCE);
427 SND_SOC_DAPM_SIGGEN("NOISE"),
459 SND_SOC_DAPM_PGA("Noise Generator", ARIZONA_COMFORT_NOISE_GENERATOR,
644 ARIZONA_MIXER_WIDGETS(Noise, "Noise"),
[all...] |
| /linux/drivers/net/wireless/ath/ath5k/ |
| H A D | ani.c | 27 * Adaptive Noise Immunity (ANI) controls five noise immunity parameters
33 * - "noise immunity"
61 * ath5k_ani_set_noise_immunity_level() - Set noise immunity level
86 ATH5K_ERR(ah, "noise immunity level %d out of range", in ath5k_ani_set_noise_immunity_level()
213 * ath5k_ani_raise_immunity() - Increase noise immunity
219 * Try to raise noise immunity (=decrease sensitivity) in several steps
231 /* first: raise noise immunity */ in ath5k_ani_raise_immunity()
302 * ath5k_ani_lower_immunity() - Decrease noise immunity
306 * Try to lower noise immunity (=increase sensitivity) in several steps
357 /* finally, reduce noise immunity */ in ath5k_ani_lower_immunity()
|
| /linux/drivers/staging/media/atomisp/pci/isp/kernels/tnr/tnr3/ |
| H A D | ia_css_tnr3_types.h | 20 * CSS-API header file for Temporal Noise Reduction v3 (TNR3) kernel
30 /* Temporal Noise Reduction v3 (TNR3) configuration.
44 * 4. Selection of the reference frame buffer to be used for noise reduction.
|
| /linux/include/uapi/linux/media/raspberrypi/ |
| H A D | pisp_be_config.h | 173 * @noise_constant: Constant offset value used in noise estimation
174 * @noise_slope: Noise estimation multiplier
203 * @black_level: Black level subtracted from pixel for noise estimation
207 * @noise_constant: Noise constant used for noise estimation
208 * @noise_slope: Noise slope value used for noise estimation
209 * @noise_constant2: Second noise constant used for noise estimation
210 * @noise_slope2: Second slope value used for noise estimation
274 * @thresh: Constant for noise estimation
|