| /linux/Documentation/trace/ |
| H A D | osnoise-tracer.rst | 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.
82 - The NOISE IN US reports the sum of noise in microseconds observed
86 - The MAX SINGLE NOISE IN US reports the maximum single noise observed
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| /linux/include/trace/events/ |
| H A D | osnoise.h | 15 u64 noise; /* noise */ member
46 __field( u64, noise )
57 __entry->noise = s->noise;
70 __entry->noise,
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| /linux/drivers/net/wireless/ath/ |
| H A D | spectral_common.h | 56 s8 noise; member
100 __be16 noise; member
124 __be32 noise; member
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| /linux/drivers/media/dvb-frontends/ |
| H A D | or51132.c | 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()
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()
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| H A D | lgdt3305.c | 986 u32 noise; /* noise value */ in lgdt3305_read_snr() local
994 noise = ((read_reg(state, LGDT3305_PT_MSE_1) & 0x07) << 16) | in lgdt3305_read_snr()
1001 noise = ((read_reg(state, LGDT3305_EQ_MSE_1) & 0x0f) << 16) | in lgdt3305_read_snr()
1009 noise = (read_reg(state, LGDT3305_CR_MSE_1) << 8) | in lgdt3305_read_snr()
1019 state->snr = calculate_snr(noise, c); in lgdt3305_read_snr()
1022 lg_dbg("noise = 0x%08x, snr = %d.%02d dB\n", noise, in lgdt3305_read_snr()
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| /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
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| H A D | sysfs-bus-iio-proximity-as3935 | 14 When 1 the noise level is over the trip level and not reporting
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| H A D | sysfs-bus-iio-light-isl29018 | 16 is less affected by the ambient IR noise variation.
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| /linux/tools/testing/selftests/bpf/progs/ |
| H A D | tailcall_bpf2bpf4.c | 20 int noise = 0; variable
33 if (noise) in subprog_tail_2()
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| /linux/Documentation/userspace-api/media/dvb/ |
| H A D | fe-read-snr.rst | 31 The signal-to-noise ratio is stored into \*snr.
36 This ioctl call returns the signal-to-noise ratio for the signal
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| /linux/Documentation/sound/soc/ |
| H A D | pops-clicks.rst | 8 powered up and causes a popping noise on the speakers).
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
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| /linux/drivers/media/pci/cx88/ |
| H A D | cx88-dsp.c | 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()
193 carrier, stereo, dual, noise); in detect_a2_a2m_eiaj()
216 (noise < 10) && in detect_a2_a2m_eiaj()
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| /linux/Documentation/userspace-api/media/drivers/ |
| H A D | thp7312.rst | 35 Enable/Disable auto noise reduction.
38 Set the noise reduction strength, where 0 is the weakest and 10 is the
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| /linux/kernel/trace/ |
| H A D | trace_osnoise.c | 512 entry->noise = sample->noise; in __record_osnoise_sample()
1436 s64 noise = 0, max_noise = 0; in run_osnoise() local
1505 noise = time_sub(sample, last_sample); in run_osnoise()
1510 if (noise < 0) { in run_osnoise()
1530 if (noise >= threshold) { in run_osnoise()
1533 if (noise > max_noise) in run_osnoise()
1534 max_noise = noise; in run_osnoise()
1539 sum_noise += noise; in run_osnoise()
1541 trace_sample_threshold(last_sample, noise, interference); in run_osnoise()
1544 if (noise > stop_in) in run_osnoise()
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| H A D | trace_entries.h | 425 __field( u64, noise )
436 __entry->noise,
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| /linux/drivers/net/wireless/realtek/rtl818x/rtl8187/ |
| H A D | rtl8187.h | 46 u8 noise; member
136 u8 noise; member
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| /linux/scripts/ |
| H A D | spdxexclude | 6 # create lots of noise for no value
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| /linux/Documentation/devicetree/bindings/input/touchscreen/ |
| H A D | brcm,iproc-touchscreen.txt | 55 - touchscreen-fuzz-x: horizontal noise value of the absolute input
57 - touchscreen-fuzz-y: vertical noise value of the absolute input
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| /linux/fs/jffs2/ |
| H A D | scan.c | 27 #define noisy_printk(noise, fmt, ...) \ argument
29 if (*(noise)) { \
31 (*(noise))--; \
32 if (!(*(noise))) \
454 int noise = 0; in jffs2_scan_eraseblock() local
612 noise = 10; in jffs2_scan_eraseblock()
751 noisy_printk(&noise, "%s(): Magic bitmask 0x%04x not found at 0x%08x: 0x%04x instead\n", in jffs2_scan_eraseblock()
767 …noisy_printk(&noise, "%s(): Node at 0x%08x {0x%04x, 0x%04x, 0x%08x) has invalid CRC 0x%08x (calcul… in jffs2_scan_eraseblock()
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| /linux/Documentation/tools/rtla/ |
| H A D | common_osnoise_description.txt | 4 allowing all the sources of operating system noise during its execution.
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| /linux/Documentation/input/devices/ |
| H A D | appletouch.rst | 72 noise when the temperature changes. This is especially true when you power-on
75 The appletouch driver tries to handle this noise and auto adapt itself, but it
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| /linux/drivers/net/wireless/broadcom/b43legacy/ |
| H A D | main.c | 796 u8 noise[4]; in handle_irq_noise() local
806 *((__le32 *)noise) = cpu_to_le32(b43legacy_jssi_read(dev)); in handle_irq_noise()
807 if (noise[0] == 0x7F || noise[1] == 0x7F || in handle_irq_noise()
808 noise[2] == 0x7F || noise[3] == 0x7F) in handle_irq_noise()
814 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); in handle_irq_noise()
815 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); in handle_irq_noise()
816 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); in handle_irq_noise()
817 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); in handle_irq_noise()
818 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]]; in handle_irq_noise()
819 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]]; in handle_irq_noise()
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| /linux/drivers/net/wireless/ath/carl9170/ |
| H A D | phy.c | 1535 BUILD_BUG_ON(ARRAY_SIZE(phy_regs) != ARRAY_SIZE(ar->noise)); in carl9170_get_noisefloor()
1542 ar->noise[i] = sign_extend32(GET_VAL( in carl9170_get_noisefloor()
1545 ar->noise[i + 2] = sign_extend32(GET_VAL( in carl9170_get_noisefloor()
1550 ar->survey[ar->channel->hw_value].noise = ar->noise[0]; in carl9170_get_noisefloor()
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| /linux/drivers/net/wireless/intel/iwlwifi/mld/ |
| H A D | scan.h | 159 s8 noise; member
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| /linux/tools/power/cpupower/ |
| H A D | TODO | 23 This would be ideal as it will not introduce noise in the
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