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linux/sound
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Luca Ceresoli 6ef46a69ec
ASoC: trace: add component to set_bias_level trace events 
The snd_soc_bias_level_start and snd_soc_bias_level_done trace events
currently look like:

           aplay-229   [000]  1250.140778: snd_soc_bias_level_start: card=vscn-2046 val=1
           aplay-229   [000]  1250.140784: snd_soc_bias_level_done: card=vscn-2046 val=1
           aplay-229   [000]  1250.140786: snd_soc_bias_level_start: card=vscn-2046 val=2
           aplay-229   [000]  1250.140788: snd_soc_bias_level_done: card=vscn-2046 val=2
    kworker/u8:1-21    [000]  1250.140871: snd_soc_bias_level_start: card=vscn-2046 val=1
    kworker/u8:0-11    [000]  1250.140951: snd_soc_bias_level_start: card=vscn-2046 val=1
    kworker/u8:0-11    [000]  1250.140956: snd_soc_bias_level_done: card=vscn-2046 val=1
    kworker/u8:0-11    [000]  1250.140959: snd_soc_bias_level_start: card=vscn-2046 val=2
    kworker/u8:0-11    [000]  1250.140961: snd_soc_bias_level_done: card=vscn-2046 val=2
    kworker/u8:1-21    [000]  1250.167219: snd_soc_bias_level_done: card=vscn-2046 val=1
    kworker/u8:1-21    [000]  1250.167222: snd_soc_bias_level_start: card=vscn-2046 val=2
    kworker/u8:1-21    [000]  1250.167232: snd_soc_bias_level_done: card=vscn-2046 val=2
    kworker/u8:0-11    [000]  1250.167440: snd_soc_bias_level_start: card=vscn-2046 val=3
    kworker/u8:0-11    [000]  1250.167444: snd_soc_bias_level_done: card=vscn-2046 val=3
    kworker/u8:1-21    [000]  1250.167497: snd_soc_bias_level_start: card=vscn-2046 val=3
    kworker/u8:1-21    [000]  1250.167506: snd_soc_bias_level_done: card=vscn-2046 val=3

There are clearly multiple calls, one per component, but they cannot be
discriminated from each other.

Change the ftrace events to also print the component name, to make it clear
which part of the code is involved. This requires changing the passed value
from a struct snd_soc_card, where the DAPM context is not kwown, to a
struct snd_soc_dapm_context where it is obviously known but the a card
pointer is also available.

With this change, the resulting trace becomes:

           aplay-247   [000]  1436.357332: snd_soc_bias_level_start: card=vscn-2046 component=(none) val=1
           aplay-247   [000]  1436.357338: snd_soc_bias_level_done: card=vscn-2046 component=(none) val=1
           aplay-247   [000]  1436.357340: snd_soc_bias_level_start: card=vscn-2046 component=(none) val=2
           aplay-247   [000]  1436.357343: snd_soc_bias_level_done: card=vscn-2046 component=(none) val=2
    kworker/u8:4-215   [000]  1436.357437: snd_soc_bias_level_start: card=vscn-2046 component=ff560000.codec val=1
    kworker/u8:5-231   [000]  1436.357518: snd_soc_bias_level_start: card=vscn-2046 component=ff320000.i2s val=1
    kworker/u8:5-231   [000]  1436.357523: snd_soc_bias_level_done: card=vscn-2046 component=ff320000.i2s val=1
    kworker/u8:5-231   [000]  1436.357526: snd_soc_bias_level_start: card=vscn-2046 component=ff320000.i2s val=2
    kworker/u8:5-231   [000]  1436.357528: snd_soc_bias_level_done: card=vscn-2046 component=ff320000.i2s val=2
    kworker/u8:4-215   [000]  1436.383217: snd_soc_bias_level_done: card=vscn-2046 component=ff560000.codec val=1
    kworker/u8:4-215   [000]  1436.383221: snd_soc_bias_level_start: card=vscn-2046 component=ff560000.codec val=2
    kworker/u8:4-215   [000]  1436.383231: snd_soc_bias_level_done: card=vscn-2046 component=ff560000.codec val=2
    kworker/u8:5-231   [000]  1436.383468: snd_soc_bias_level_start: card=vscn-2046 component=ff320000.i2s val=3
    kworker/u8:5-231   [000]  1436.383472: snd_soc_bias_level_done: card=vscn-2046 component=ff320000.i2s val=3
    kworker/u8:4-215   [000]  1436.383503: snd_soc_bias_level_start: card=vscn-2046 component=ff560000.codec val=3
    kworker/u8:4-215   [000]  1436.383513: snd_soc_bias_level_done: card=vscn-2046 component=ff560000.codec val=3

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://msgid.link/r/20240306-improve-asoc-trace-events-v1-1-edb252bbeb10@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2024-03-06 14:03:26 +00:00
..
ac97 ALSA: ac97: fix build regression 2024-01-03 11:47:04 +01:00
aoa ALSA: aoa: Replace with __packed attribute 2023-10-26 09:43:11 +02:00
arm ASoC: arm: convert not to use asoc_xxx() 2023-09-25 14:16:16 +02:00
atmel ALSA: Explicitly include correct DT includes 2023-07-16 14:50:56 +02:00
core ALSA: pcm: Add missing formats to formats list 2024-01-30 14:11:02 +01:00
drivers sound fixes for 6.8-rc1 2024-01-19 12:30:29 -08:00
firewire ALSA: firewire: Fix -Wformat-truncation warning for MIDI stream names 2023-09-15 13:22:06 +02:00
hda ALSA: mark all struct bus_type as const 2023-12-30 10:10:41 +01:00
i2c
isa ALSA: wavefront: copy userspace array safely 2023-11-20 12:38:31 +01:00
mips
oss OSS: dmasound/paula: Convert to platform remove callback returning void 2023-11-09 17:44:52 +01:00
parisc
pci ALSA: cs35l56: Apply calibration from EFI 2024-02-24 01:58:40 +00:00
pcmcia
ppc ALSA: Explicitly include correct DT includes 2023-07-16 14:50:56 +02:00
sh ALSA: sh: Convert to generic PCM copy ops 2023-08-18 12:18:24 +02:00
soc ASoC: trace: add component to set_bias_level trace events 2024-03-06 14:03:26 +00:00
sparc ALSA: Explicitly include correct DT includes 2023-07-16 14:50:56 +02:00
spi
synth
usb ALSA: usb-audio: More relaxed check of MIDI jack names 2024-02-15 16:56:05 +01:00
virtio ALSA: virtio: remove duplicate check if queue is broken 2024-01-24 14:41:37 +01:00
x86 drm/edid: include drm_eld.h only where required 2023-11-09 16:47:31 +02:00
xen ALSA: xen: Fix -Wformat-truncation warning 2023-09-15 13:21:35 +02:00
ac97_bus.c ALSA: mark all struct bus_type as const 2023-12-30 10:10:41 +01:00
Kconfig This pull request contains the following changes for UML: 2023-09-04 11:32:21 -07:00
last.c
Makefile
sound_core.c sound: make all 'class' structures const 2023-06-21 07:29:10 +02:00